ITech IT8831, IT8838B User Manual

Via Acquanera, 29 22100 Como tel. 031.526.566 (r.a.) fax 031.507.984

[email protected] www.calpower.it

Programmable DC Electronic

Load

Series IT8800 User’s Manual

Model: IT8813/IT8813B/IT8813C/IT8814/IT8814B/

IT8814C/IT8816/IT8816B/IT8816C/IT8817/

IT8817B/IT8817C/IT8818/IT8818B/IT8818C/

IT8818D/IT8830/IT8830B/IT8830H/IT8831/

IT8831B/IT8831H/IT8832/IT8832B/IT8832H/

IT8833/IT8833B/IT8833H/IT8834B/IT8834H/

IT8835B/IT8835H/IT8836B/IT8836H/IT8837B/

IT8837H/IT8838B/IT8838H/IT8839B/IT8839H/

IT8819H

Revision: V3.2

Statement

According to the international copyright law, reproduction of any part of this manual in any form (including electronic storage and retrieval or translation into languages of other countries or regions) is not allowed without prior permission and written consent of Itech Electronic

Co., Ltd.

Manual Article No.

IT8800-402180

Revision

Revision 3, published on

April 26, 2019

Itech Electronic, Co., Ltd.

Trademark Statement

Pentium is a registered trademark of

Intel Corporation in the United States.

Microsoft, Visual Studio, Windows and

MS Windows are trademarks of

Microsoft Corporation in the United

States and/or other countries/regions.

Guarantee

Materials in the document are provided talis qualis and may be changed in future revisions without prior notice. In addition, within the maximum allowable extent of laws, ITECH is not committed to any explicit or implied guarantee for this manual and all information therein, including but not limited to the implied guarantee on marketability and availability for some special purposes.

ITECH shall not be responsible for any error or incidental or indirect losses caused by the provision, use or application of this documents and information therein. If some guarantee clauses in other written agreements between ITECH and users are not consistent with clauses herein, those clauses in other written agreements shall prevail.

Technology license

Hardware and/or software in this document cannot be provided without a license and can only be used or copied according to the license.

Restricted permission statement

Restricted permissions of the U.S. government. Permissions for software and technical data which are authorized to the U.S. Government only include those for custom provision to end users.

ITECH follows FAR 12.211 (technical data), 12.212 (computer software).

DFARS 252.227-7015 (technical data--commercial products) for national defense and DFARS 227.7202-3

(permissions for commercial computer software or computer software documents) while providing the customized business licenses of software and technical data.

Safety Statement operations.

“Caution” signs indicate danger. It is required to pay attention to the contents of these signs during implementation of

The damage to the product or loss of important data may be caused in case of improper operation steps or failure to follow operation steps. Do not continue to implement any improper operation indicated in “Caution” signs when the specified conditions are not fully understood or these conditions are not satisfied.

“Warning” indicates danger. It is required to pay attention to the contents of these signs during implementation of operation steps. Personal casualties may be caused in case of improper operation steps or failure to follow these operation steps. Do not continue to implement any improper operation indicated in “Warning” signs when the specified conditions are not fully understood or these conditions are not satisfied.

NOTE

“Instructions” indicates operation instructions. It is required to refer to the contents of these signs during operation steps. These signs are used for providing tips or supplementary information for operators.

IT8800 User’s Manual

Certification and Quality Assurance

IT8800 series electronic load completely reaches nominal technical indicators in the manual.

Warranty service

ITECH Company will provide one-year warranty services for the product materials and manufacturing (excluding the following limitations).

 When warranty service or repair is needed, please send the product to the service unit specified by ITECH Company.

 When the product is sent to ITECH Company for warranty service, the customer must pay the one-way freight to the maintenance department of

ITECH, and ITECH will be responsible for return freight.

 If the product is sent to ITECH for warranty service from other countries, the customer will be responsible for all the freight, duties and other taxes.

Limitation of Warranty

Warranty service does not apply to the damage caused in the following circumstances:

 Damage resulting from customer-wired circuits or customer-supplied parts or accessories;

 Product which has been modified or repaired by the customer;

 Damage caused by the circuit installed by the customer or damage caused by operation of the product in non-specified environment;

 The product model or serial number is altered, deleted, removed or made illegible by customer;

 Damage caused by accidents, including but not limited to lightning, water, fire, abuse or negligence.

Safety signs

DC power

AC power

Both DC and AC power supply

Protective grounding terminal

Grounding terminal

Danger sign

Warning sign (refer to specific

“Warning” or “Caution” information in the manual)

Ground wire connection end sign

-

ON (with the power switched on)

OFF (with the power supply switched off)

Power supply switching-on status

Power supply switching-off status

Reference terminal

Positive terminal

Negative terminal

-

Copyright © ITECH Electronic Co., Ltd. i


Safety Precautions

General safety precautions below must be followed in each phase of instrument operation. In case of failure to follow these precautions or specific warnings in other parts of the manual, violation against the safety standards related to the design, manufacture and purpose of the instrument will occur. If the user does not follow these precautions, ITECH will bear no responsibility arising there from.

 The electronic load is provided with a three-core power line during delivery and should be connected to a three-core junction box. Before operation, be sure that the electronic load is well grounded.

 Use electric wires of appropriate load. All loading wires should be capable of bearing maximum short-circuit of electronic load without overheating.

 Ensure the voltage fluctuation of mains supply is less than 10% of the working voltage range in order to reduce risks of fire and electric shock.

 To prevent burnout, please pay special attention to positive and negative polarities of electronic load during connection!

 Do not use damaged equipment. Please check the housing before using the equipment. Check whether the instrument is subject to cracking or is lack of plastic. Do not operate the instrument in the environment with explosive gas, steam or dust.

 Observe all tags on the equipment before connection.

 Do not install alternative parts on the instrument or perform any unauthorized modification.

 Do not use the equipment when the removable cover is dismantled or loose.

 Please use the power adapter supplied by the manufacturer to avoid accidental injury.

 We do not accept responsibility for any direct or indirect financial damage or loss of profit that might occur when using the instrument.

 This instrument is used for industrial purposes. Do not apply this product to

IT power supply system.

 Do not use the equipment on the life support system or other equipment with safety requirements.

 If the equipment is not used in the manner specified by the manufacturer, its protection may be damaged.

 Always use dry cloth to clean the equipment housing. Do not clean the inside of the instrument.

 Do not block the air vent of the equipment.

Environmental conditions

The IT8800 series electronic load can only be used indoors or in low condensation areas. The following table shows general environmental requirements for this instrument.

Environmental conditions

Operating temperature

Operating humidity

Storage temperature

Requirement

0°C ～ 40°C

0°C - 40°C

20% - 80% (non condensing)

-20°C - 70 °C

Copyright © ITECH Electronic Co., Ltd. ii

Altitude

Installation category

Pollution degree


Operating up to 2,000 meters

Ⅱ

Pollution degree 2

NOTE

In order to ensure the accuracy of measurement, it is recommended to operate the instrument half an hour after start-up.

Regulation tag

The CE tag shows that the product complies with the provisions of all relevant European laws (if the year is shown, it indicates that the year when the design is approved).

This instrument complies with the WEEE directive

(2002/96/EC) tag requirements. This attached product tag shows that the electrical/electronic product cannot be discarded in household waste.

This symbol indicates that no danger will happen or toxic substances will not leak or cause damage in normal use within the specified period. The service life of the product is 10 years. The product can be used safely within the environmental protection period; otherwise, the product should be put into the recycling system.

Waste electrical and electronic equipment (WEEE) directive

Waste electrical and electronic equipment (WEEE) directive,

2002/96/EC

The product complies with tag requirements of the WEEE directive (2002/96/EC). This tag indicates that the electronic equipment cannot be disposed of as ordinary household waste.

Product Category

According to the equipment classification in Annex I of the

WEEE directive, this instrument belongs to the “Monitoring” product.

If you want to return the unnecessary instrument, please contact the nearest sales office of ITECH.

Copyright © ITECH Electronic Co., Ltd. iii


Compliance Information

Complies with the essential requirements of the following applicable European

Directives, and carries the CE marking accordingly:

 Electromagnetic Compatibility (EMC) Directive 2014/30/EU

 Low-Voltage Directive (Safety) 2014/35/EU

Conforms with the following product standards:

EMC Standard

IEC 61326-1:2012/ EN 61326-1:2013 ¹²³

Reference Standards

CISPR 11:2009+A1:2010/ EN 55011:2009+A1:2010 (Group 1, Class A)

IEC 61000-4-2:2008/ EN 61000-4-2:2009

IEC 61000-4-3:2006+A1:2007+A2:2010/ EN 61000-4-3:2006+A1:2008+A2:2010

IEC 61000-4-4:2004+A1:2010/ EN 61000-4-4:2004+A1:2010

IEC 61000-4-5:2005/ EN 61000-4-5:2006

IEC 61000-4-6:2008/ EN 61000-4-6:2009

IEC 61000-4-11:2004/ EN 61000-4-11:2004

1. The product is intended for use in non-residential/non-domestic environments. Use of the product in residential/domestic environments may cause electromagnetic interference.

2. Connection of the instrument to a test object may produce radiations beyond the specified limit.

3. Use high-performance shielded interface cable to ensure conformity with the EMC standards listed above.

Safety Standard

IEC 61010-1:2010/ EN 61010-1:2010

Copyright © ITECH Electronic Co., Ltd. iv


Content

Certification and Quality Assurance ............................................................................................................................ i

Warranty service ......................................................................................................................................................... i

Limitation of Warranty ................................................................................................................................................ i

Safety signs .................................................................................................................................................................. i

Safety Precautions

...................................................................................................................................................... ii

Environmental conditions .......................................................................................................................................... ii

Regulation tag ........................................................................................................................................................... iii

Waste electrical and electronic equipment (WEEE) directive ................................................................................... iii

Compliance Information ........................................................................................................................................... iv

Chapter1 Acceptance and Installation ........................................................................................................... 1

1.1 Confirm package contents .................................................................................................................................... 1

1.2. Installation position ............................................................................................................................................. 2

1.3 Installation of power line ..................................................................................................................................... 8

Chapter2 Quick Start ................................................................................................................................... 10

2.1 Brief introduction ............................................................................................................................................... 10

2.2 Introduction of front panel ................................................................................................................................ 12

2.3 Introduction to the keypad ................................................................................................................................ 12

2.4 Fast function key ................................................................................................................................................ 13

2.5 Function description of VFD status indicators .................................................................................................... 14

2.6 Introduction of rear panel .................................................................................................................................. 14

2.7 Power-on selftest ............................................................................................................................................... 17

Chapter3 Function and Features .................................................................................................................. 20

3.1 Switching of local/remote operation modes ...................................................................................................... 20

3.2 Constant-status operation mode ....................................................................................................................... 20

3.2.1 Constant current operation mode (CC) ....................................................................................................... 21

3.2.2 Constant voltage operation mode (CV) ....................................................................................................... 22

3.2.3 Constant resistance operation mode (CR) ................................................................................................... 23

3.2.4 Constant power operation mode (CW) ....................................................................................................... 24

3.3 Input control function ........................................................................................................................................ 25

3.4 Keyboard locking function .................................................................................................................................. 25

3.5 Short-circuit analog function.............................................................................................................................. 25

3.6 System menu function (System) ......................................................................................................................... 25

3.7 Configuration menu function (Config) ............................................................................................................... 27

3.8 Triggering function ............................................................................................................................................. 28

3.9 Dynamic test function ........................................................................................................................................ 29

3.9.1 Continuous mode ........................................................................................................................................ 29

3.9.2 Pulse mode .................................................................................................................................................. 30

3.9.3 Toggle mode ................................................................................................................................................ 32

3.10 OCP test function ............................................................................................................................................. 33

3.11 OPP test function ............................................................................................................................................. 34

3.12 Battery discharge test function ........................................................................................................................ 35

3.13 CR-LED test function ........................................................................................................................................ 36

Setting CR-LED Mode .......................................................................................................................................... 37

Copyright © ITECH Electronic Co., Ltd. v


3.14 Measurement of voltage rise time ................................................................................................................... 38

3.15 Configuration save function ............................................................................................................................. 39

3.16 VON function .................................................................................................................................................... 40

3.17. Protective function .......................................................................................................................................... 41

3.17.1 Over-voltage protection (OVP) .................................................................................................................. 41

3.17.2 Over-current protection (OCP) .................................................................................................................. 41

3.17.3 Over-power protection (OPP) .................................................................................................................... 42

3.17.4 Over-temperature protection (OTP) .......................................................................................................... 42

3.18 List operation (LIST) .......................................................................................................................................... 43

3.19 Terminal function of rear board ....................................................................................................................... 45

3.19.1 Remote sense compensation functions ..................................................................................................... 45

3.19.2 External trigger operation ......................................................................................................................... 46

3.19.3 External analog quantity test .................................................................................................................... 46

3.19.4 External On/Off Control ............................................................................................................................ 46

3.19.5 Voltage fault indication terminal .............................................................................................................. 47

3.19.6 Current monitoring (I Monitor) ................................................................................................................. 47

3.20 External Signal Control Interface ...................................................................................................................... 47

3.21 Auto test function ............................................................................................................................................ 47

Chapter4 Technical Specifications ................................................................................................................ 51

4.1 Major technical parameters ............................................................................................................................... 51

4.2 Additional features ............................................................................................................................................. 79

Chapter5 References of Load Communication Interfaces ............................................................................. 80

5.1 RS232 interface .................................................................................................................................................. 80

5.2 USB Interface ...................................................................................................................................................... 81

5.3 GPIB interface..................................................................................................................................................... 82

Appendix

............................................................................................................................................................. 83

Specifications of Red and Black Test Lines ............................................................................................................... 83

Copyright © ITECH Electronic Co., Ltd. vi

Acceptance

and Installation

Chapter1 Acceptance and Installation

1.1 Confirm package contents

Open the package and check the articles within package box before operation.

In case of any non-conformity, missing or appearance wearing, please contact

ITECH immediately.

Table 1-1 Package box contents (to a machine as a reference standard)

Device name Quantity Model

Electronic load

1 IT8800 series

Remarks

IT8800 series include:

IT8813/IT8813B/IT8813C/

IT8814/ IT8814B/ IT8814C/

IT8816/ IT8816B/ IT8816C/

IT8817/ IT8817B/ IT8817C/

IT8818/ IT8818B/ IT8818C/

IT8830/ IT8830B/ IT8830H/

IT8831/ IT8831B/ IT8831H/

IT8832/ IT8832B/ IT8832H/

IT8833/ IT8833B/ IT8833H/

IT8818D/IT8834B/IT8834H/

IT8835B/IT8835H/IT8836B/

IT8836H/IT8837B/IT8837H/

IT8838B/IT8838H/IT8839B/

Power cord

Red and black test lines

CD

Factory alignment x x

1

1

IT-E171/IT-E17

2/

IT-E173/IT-E17

4

-

-

IT8839H/IT8819H

Number of the power cords vary depending on the model.

The User may select different power lines based on local outlet specification. For detailed specifications, refer to

1.3

Installation of Power Line.

The test lines are the standard accessories for the model the power of which is greater than or equal to 10KW. Please refer to Table 1 2 for the test line specifications.

Comprising user manual and documents related to programming and grammatical guidelines.

Test report before delivery.

Copyright © ITECH Electronic Co., Ltd. 1

Acceptance

and Installation report

USB communication line

1 - -

NOTE

After confirming that package contents are consistent and correct, please appropriately keep package box and related contents. The package requirements should be met when the instrument is returned to factory for repair.

Table 1-2 Test lines specifications

Colour

Red

Black

Red

Black

Red

Black

Red

Black

Specification (Length: 2 meters)

120A

240A

360A

350-500A

Note: The number of test cables shipped with different models are different, subject to the actual product.

1.2. Installation position

The instrument should be installed at well-ventilated and rational-sized space.

Please select appropriate space for installation based on the electronic load size.

Model: IT8813/IT8814/IT8816/IT8813B/IT8814B/IT8816B/IT8813C/IT8814C/IT8816C


Detailed dimensional drawings

Copyright © ITECH Electronic Co., Ltd.

Acceptance

and Installation

3

Model: IT8817/IT8817B/IT8817C/IT8818/IT8818B/IT8818C/IT8818D

Acceptance

and Installation



Model: IT8819H/IT8830/IT8830B/IT8830H

Acceptance

and Installation



Acceptance

and Installation

 Model: IT8831/IT8831B/IT8831H/IT8832/IT8832B/IT8832H/IT8833/

IT8833B/ IT8833H/IT8834B/IT8834H, Refer to the following dimension drawing:


Acceptance

and Installation

 Model: IT8835B/IT8835H/IT8836B/IT8836H/IT8837B/IT8837H, Refer to the following dimension drawing:


Acceptance

and Installation

 Model: IT8838B/IT8838H/IT8839B/IT8839H, Refer to the following dimension drawing:

1.3 Installation of power line

Connect power line of standard accessories and ensure that the electronic load is under normal power supply.

AC power input level

Working voltage of IT8800 series includes 110V and 220V (which can be selected by the switch on rear board of load). When IT8800 series load power is greater than or equal to 35KW, the 110V AC power input is not supported. AC power input level:

 Option Opt.1: 220Vac 50Hz/60Hz

 Option Opt.2: 110Vac 50Hz/60Hz

Categories of power lines

Please select appropriate power lines appropriate to local voltage based on the specifications of power lines below. If purchased model fails to meet local voltage requirements, please contact distributor or factory for change.


Acceptance

and Installation

China

IT-171

America, Canada,

Japan

IT-E172

Europe

IT-E173

Britain

IT-E174


Quick

Start

Chapter2 Quick Start

This Chapter will introduce power-on check steps of IT8800 Series to ensure normal start-up and usage under initialization status of the load. Besides, to facilitate usage, this part also displays the functions of front board, rear board and keyboard keys as well as display functions of VFD (Vacuum Fluorescent

Display) to a quick view of load appearance, structure and key usage functions before operation.

2.1 Brief introduction

IT8800 Series is a single-input programmable DC electronic load. Built in with

RS232, USB and GPIB communication interfaces, this series of programmable

DC electronic load provides a multi-purpose solution to meet different design and test requirements.

This Series delivers special functions and advantages at international level, including:

 High-visibility vacuum fluorescent display (VFD)

 Dynamic mode: up to 25KHz

 Voltage measurement dissolution rate: up to 0.1 mV Current 0.01 mA (10 uA)

 Voltage and current measurement speed: up to 50 KHz

 Four operation modes: constant voltage, constant current, constant resistance and constant power.

 Rotary coding switch for easy and quick operation

 Remote sense function

 Battery test function

 OCP test, OPP test

 Auto test function

 CR-LED test

 Memory capacity: 100 groups

 Short-circuit function

 Dynamic test function

 Portable and robust enclosure equipped with skid resistant foot stand

 Intelligent fan control

 Built-in Buzzer, for warning

 Outage backup memory

 Built-in GPIB, USB and RS232 communication interfaces

Model Selection Table for IT8800 Series:

Model Voltage Current Power

IT8813 120V 60A 750W

IT8813B 500V

IT8813C 120V

30A

120A

750W

1500W

IT8814 120V 120A 1500W

IT8814B 500V 60A 1200W


Height

3U

3U

3U

3U

3U

10

Model Voltage Current Power

IT8814C 120V 240A 1500W

IT8816 120V

IT8816B 500V

240A

100A

3000W

2500W

IT8816C 120V

IT8817 120V

IT8817B 500V

IT8817C 120V

480A

360A

120A

600A

3000W

4500W

3600W

4500W

IT8818 120V

IT8818B 500V

IT8818C 120V

IT8818D 60V

IT8819H 800V

IT8830 120V

480A

150A

720A

700A

80A

500A

6000W

5000W

6000W

6000W

7500W

10KW

IT8830B 500V

IT8830H 800V

IT8831 120V

IT8831B 500V

IT8831H 800V

IT8832 120V

IT8832B 500V

IT8832H 800V

IT8833 120V

IT8833B 500V

IT8833H 800V

IT8834B 500V

IT8834H 800

200A

100A

750A

300A

150A

1000A

400A

200A

1500A

500A

250A

600A

300A

10KW

10KW

15KW

15KW

15KW

20KW

20KW

20KW

25KW

25KW

25KW

30KW

30KW

IT8835B 500V

IT8835H 800V

IT8836B 500V

IT8836H 800V

IT8837B 500V

IT8837H 800V

IT8838B 500V

IT8838H 800V

IT8839B 500V

IT8839H 800V

700A

350A

800A

400A

900A

450A

1000A

500A

1100A

600A

35KW

35KW

40KW

40KW

45KW

45KW

50KW

50KW

55KW

55KW

27U

27U

27U

27U

27U

27U

12U

12U

27U

27U

27U

27U

27U

6U

6U

6U

6U

12U

12U

3U

6U

6U

6U

Height

3U

3U

3U

37U

37U

37U

37U

37U

37U

42U

42U

42U

42U

Quick

Start


Quick

Start

2.2 Introduction of front panel

Front panel introduction of IT8813/IT8814/IT8816/IT8813B/IT8814B/IT8816B/

IT8813C/ IT8814C/IT8816C, and front panel introduction of IT8817/IT8817B/

IT8817C/IT8818/IT8818B/IT8818C/ IT8818D/IT8819H/IT8830/IT8830B/

IT8830H/IT8831/IT8831B/IT8831H/IT8832/IT8832B/IT8832H/IT8833/IT8833B/

IT8833H/IT8834B/IT8834H/IT8835B/IT8835H/IT8836B/IT8836H/IT8837B/IT88

37H/IT8838B/IT8838H/IT8839B/ IT8839H as below except cooling window.

① ② ④ ⑤ ⑥ ⑦

③

1. Power switch

2. VFD screen

3. Adjusting knob

4. Function keys

5. Numeric keys, Esc keys and composite keys

6. Arrow Keys and Enter Key

2.3 Introduction to the keypad

The keypad of IT8800 series is shown in the next figure.

The following table explains the keys and buttons on the keypad.

Shift

Recall

Tran

Trig

List

Pause

CC

CV

Enables access to secondary functions.

Recalls stored instrument setting.

Configures transient parameters.

Sets the load to trigger mode for list and transient function.

Configures list parameters.

To pause operation during automatic test.

Sets the load to CC mode and configures the current value.

Sets the load to CV mode and configures the voltage value.


CR

CW

Enter

On/Off

OK

0-9

.

ESC

×10

×1

Quick

Start

Sets the load to CR mode and sets the resistance value.

Sets the load to CW mode and configures the power value.

Confirms settings.

Turns the instrument on or off.

Up key, to select menu items during menu operation.

Down key, to select menu items during menu operation.

Right key, to adjust the cursor to the specified location to set the value.

Left key, to adjust the cursor to the specified location to set the value.

Confirms settings.

Enters numeric values for various parameters.

Decimal point.

Cancels the current action and returns to the previous menu.

Rotary knob to adjust the setups by 10 stepping.

Rotary knob to adjust the setups by 1 stepping.

2.4 Fast function key

A combination of front board keys and Shift composition keys in IT8800 Series can realize functions marked at key bottom. For details, see table below.

Shift + 1 (Short) To start or end short circuit test.

Shift + 2 (program) Auto test function.

Shift + 3 (Battery) Battery test function.

Shift + 4 (Save) To save existing setting load parameter values, e.g., voltage, current and power.

Shift + 5 (System) To set system menu.

Shift + 6 (Config)

Shift + 7 (Info)

To configure system menu.

To display model, version number and serial number of

Shift + 8 (Lock)

Shift + 9 (Local)

Shift + CC (OCP) electronic load.

Keyboard locking function.

LOCAL key, to shift local and remote operation.

OCP test function.

Shift + CV (Setup) To set specific parameters of constant voltage, constant current, constant resistance and constant power.

Shift + CW (OPP) OPP test function.


Quick

Start

2.5 Function description of VFD status indicators

OFF

CC

CV

The load is off.

current mode.

Error The load has error.

The load is waiting for

The load is under constant voltage mode.

Sense triggering signal.

The load is under remote sense input mode.

CR

CW

Rmt

Addr resistance mode.

The load is under constant power mode.

Rear

The load is under software over-current protection status.

Start external analog quantity function.

The load is under remote

Auto Start automatic voltage range. operation mode.

Send command under remote

* operation.

Start keyboard locking function

SRQ Serial request query.

LRV will be displayed on the

Shift Shift key is pressed.

LRV - reverses polarity.

2.6 Introduction of rear panel

 Rear panel of IT8813/IT8814/IT8813B/IT8814B/IT8813C/IT8814C.

① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨

 Rear panel of IT8816 /IT8816B/IT8816C.

① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨


Quick

Start

 Rear panel of IT8817/IT8817B/IT8817C/IT8818/IT8818B/IT8818C/

IT8818D.

① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨

 Rear panel of IT8819H/IT8830/IT8830B/IT8830H.

① ② ③ ④ ⑤ ⑥ ⑦ ⑧

⑨


Quick

Start

 Rear panel of IT8831/IT8831B/IT8831H/IT8832/IT8832B/IT8832H/IT8833/

IT8833B/IT8833H/IT8834B/IT8834H/IT8835B/IT8835H/IT8836B/IT8836H/

IT8837B/IT8837H/IT8838B/IT8838H/IT8839B/IT8839H.

(Take IT8839H as an example, for other types, the number of fans and the position of the red box marked in the following figure are different.)

The detail of the red box in the figure above is as shown as follows:

① ④ ⑤ ⑥ ⑦ ⑨

② ③

1. Input terminal

2. Current detection terminal


⑧

16

Quick

Start

3. Remote sense compensation terminal, external triggering terminal and external analog 0-10V control terminal

4. External signal control interface

5. RS232 communication cable interface

6. USB communication cable interface

7. GPIB communication cable interface

8. AC power switch key

9. AC power input socket (including fuse)

2.7 Power-on selftest

A successful self-test indicates that the purchased load product meets delivery standards and is available for normal usage.

Before operation, please confirm that you have fully understood the safety instructions.

 To avoid burning out, be sure to confirm that power voltage matches with supply voltage.

 Be sure to connect the main power socket to the power outlet of protective grounding. Do not use terminal board without protective grounding. Before operation, be sure that the electronic load is well grounded.

 To avoid burning out, pay attention to marks of positive and negative polarities before wiring.

Self-test steps

Normal self-test procedures:

1. Correctly connect the power line. Press Power key to start up.

The VFD screen of electronic load displays software version number " BOIS

Ver. 1.10

".

2. After approximate 1s, the system is under self-test and the VFD display shows “ System Self-test… ”

3. After self-test, the VFD display information below.

0.0000V 0.0000A

0.00W CC=0.000A

Information description:

 The first line displays actual input voltage and current values.

 The second line displays setting values of actual power value and current (voltage, power and resistance).

4. Press [Shift] + 7 (Info), the electronic load VFD screen displays related information of the product. Press key to switch display of product model, product serial number and software version number.


Quick

Start

Model: IT88XX

Ver.: 1.XX-1.XX

SN: XXXXXXXXXXXXXXXXXX

Exception handling

If the electronic load cannot start normally, please check and take measures by reference to steps below.

1. Check whether the power line is correctly connected and confirm whether the electronic load is powered.

Correct wiring of power line => 2

Incorrect wiring of power line => Re-connect the power line and check whether the exception is removed.

2. Check whether the power in On. Power key is under “ ” On status.

Yes => 3

No => Please check the Power key to start power and check whether the exception is removed.

3. Check whether set power voltage of electronic load is larger than the power supply voltage. If set power voltage is 220 V and the supply voltage is 110V, the electronic load cannot start.

4. Check whether the fuse of electronic fuse is burned out.

If yes, change fuse. Detailed steps:

1) Pull out power line and take out the fuse box at power line jack with a small screw driver. As shown below.

2) If the fuse is fused, please change fuse of same specification based on machine model. See the table blow for matching information of fuse and machine model.

Products Specification (110VAC)

IT8813/13B/13C T 3.15A 250VAC

IT8814/14B/14C T 3.15A 250VAC

IT8816/16B/16C T 3.15A 250VAC

IT8817/17B/17C T 5A 250VAC

Specification (220VAC)

T 1.6A 250VAC

T 1.6A 250VAC

T 1.6A 250VAC

T 2.5A 250VAC

IT8818/18B

IT8818C/18D

T 5A 250VAC

T 5A 250VAC

IT8831/31B/31H T 6.30A 250VAC

IT8832/32B/32H T 6.30A 250VAC

IT8833/33B/33H T 6.30A 250VAC

IT8834B/34H T 6.30A 250VAC


T 2.5A 250VAC

T 2.5A 250VAC

T 3.15A 250VAC

T 3.15A 250VAC

T 3.15A 250VAC

T 3.15A 250VAC

18

IT8835B/35H

IT8836B/36H

IT8837B/37H

IT8838B/38H

IT8839H/39H

Quick

Start

Does not support 110VAC input T 3.15A 250VAC





3) After replacement, install the fuse box back to original position, as shown below.


Function

and Features

Chapter3 Function and Features

This Chapter will give a detailed description of functions and features of the electronic load. It is divided into the following parts:

 Switching of local/remote operation modes

 Constant-status operation mode

 Input control function

 Keyboard locking function

 Dynamic simulation function

 System menu function

 Configuration menu function

 Triggering function

 Dynamic test function

 OCP test function

 OPP test function

 Battery discharge test function

 CR-LED function

 Measurement of voltage rise time

 Save function

 VON function

 Protective function

 List function

 Terminal function of rear board

 Auto test function

3.1 Switching of local/remote operation modes

The electronic load is provided with local and remote operation modes. These two modes can be switched through communication commands. At initialization, the electronic load is defaulted under local operation mode.

 Local operation mode: for operating related functions through keys on the electronic load machine.

 Remote operation mode: for operating related functions of the electronic load on PC through a connection between the electronic load and PC.

Under remote operation mode, except [Shift] + 9 (Local) keys, other keys on the board are disabled. The [Shift] + 9 (Local) key can be used for switching to local operation mode.

3.2 Constant-status operation mode

The electronic mode can work under the 4 constant-state operation modes:

 Constant current operation mode (CC)

 Constant voltage operation mode (CV)

 Constant resistance operation mode (CR)


Function

and Features

 Constant power operation mode (CW)

3.2.1 Constant current operation mode (CC)

Under CC mode, the electronic load will consume constant current in regardless of whether the input voltage changes or not, as shown in Fig. 3-1.

I

Load current

Set current

Set voltage

CC mode

V

Fig. 3-1 Voltage-Current Relation Schema under CC Mode

Under CC mode, the electronic load provides three ways to set constant current.

 Under CC mode, rotate the pulse knob to change constant current value.

 Under CC mode, directly input numeric key and press [Enter] key for confirmation to change constant current value.

 Under CC mode, move the cursor with Left/Right Key and press Left/Right

Key to adjust value at corresponding position.

Operation steps

1. Press [CC] key and [Shift] + [CV] to enter parameter setting screen.

Constant Current

Range=0.000A

2. Set maximum working current value and press [Enter] key.

Constant Current

Range =1.000A

3. Set maximum voltage value and press [Enter] key.

Constant Current

High=0.00V

4. Set minimum voltage value and press [Enter] key for confirmation.

Constant Current

Low=0.000V

5. Set high and low rate and press [Enter] key for confirmation.

Constant Current

High-Rate Low-Rate

6. Set ascending slope and press [Enter] key for confirmation.

Constant Current

Rise up=0.000A/uS

7. Set descending slope and press [Enter] key for confirmation.


Function

and Features

Constant Current

Rise down=0.000A/uS

8. Complete parameter setting.

10.0000V 0.0000A

0.00W CC=1.000A

NOTE

If the above method is for editing auto test step (as mentioned below), constant current range can also be set.

3.2.2 Constant voltage operation mode (CV)

Under CV mode, the electronic load will consume sufficient current to maintain the input voltage at setting voltage. As shown in Fig. 3-2.

V

Load

voltage

Set voltage

Set current

CV mode

I

Fig. 3-2 Voltage-Current Relation Schema under CV Mode

Under CV mode, the electronic load provides three ways to modify constant voltage.

 Under CV mode, rotate the pulse knob to change constant voltage value.

 Under CV mode, directly input numeric key and press [Enter] key for

 confirmation to change constant voltage value.

Under CV mode, move the cursor with Left/Right Key and press Left/Right


Operation steps

1. Press [CV] key and [Shift] + [CV] to enter parameter setting screen.

Constant Voltage

Range=120.00V

2. Set maximum working voltage value and press [Enter] key for confirmation.

Constant Voltage

Range=2.33V

3. Set maximum current value and press [Enter] key for confirmation.

Constant Voltage

High=66.000A


Function

and Features

4. Set minimum current value and press [Enter] key for confirmation.

Constant Voltage

Low=0.0000A


10.0000V 0.0000A

0.00W CV=2.33V

NOTE

If the above method is for editing auto test step (as mentioned below), constant voltage range can also be set.

3.2.3 Constant resistance operation mode (CR)

Under CR mode, the electronic load is equivalent to a constant resistance (as shown below) and will give linear change of current with input voltage change.

As shown in Fig. 3-3:

V

Straight slope is set resistance value

Load voltage

Load current

CR mode

I

Fig. 3-3 Voltage-Current Relation Schema under CR Mode

Under CR mode, the electronic load provides three ways to modify constant resistance.

 Under CR mode, rotate the pulse knob to change constant resistance value.

 Under CR mode, directly input numeric key and press [Enter] key for confirmation to change constant resistant value.

 Under CR mode, move the cursor with Left/Right Key and press Left/Right


Operation steps

1. Press [CR] key and [Shift] + [CV] to enter parameter setting screen.

Constant Resistance

Range=7500.0Ω

2. Set maximum working resistance value and press [Enter] key.

Constant Resistance

Range =2Ω



Function

and Features

Constant Resistance

High=130.0V

4. Set minimum voltage value and press [Enter] key for confirmation.

Constant Resistance

Low=0.000V


10.0000V 0.0000A

0.00W CR

=2.000Ω

NOTE

If the above method is for editing auto test step (as mentioned below), constant resistance range can also be set.

3.2.4 Constant power operation mode (CW)

Under CW mode, the electronic load will consume a constant power, as shown below. If input voltage rises, the input current decreases and power P (= V * I) will maintain at setting power. As shown in Fig. 3-4:

V

Input voltage

V2

V3

Set power

I2 I3

Load current

CP mode

I

Fig. 3-4 Voltage-Current Relation Schema under CW Mode

Under CW mode, the electronic load provides three ways to modify constant power.

 Under CW mode, rotate the pulse knob to change constant power value.

 Under CW mode, directly input numeric key and press [Enter] key for confirmation to change constant power value.

 Under CW mode, move the cursor with Left/Right Key and press Left/Right


Operation steps

1. Press [CW] key. Press [Shift] + [CV] to enter parameter setting screen.

Constant Power

Range=400.00W

2. Set maximum working power value and press [Enter] key.

Constant Power


Function

and Features

Range =1.00W


Constant Power

High=130.00V

4. Set minimum voltage value and press [Enter] key.

Constant Power

Low=0.000V


10.0000V 0.0000A

0.00W CW=1.00W

NOTE

If the above method is for editing auto test step (as mentioned below), constant power range can also be set.

3.3 Input control function

Control input switch of the electronic load by pressing [On/Off] key on the front board. If [On/Off] lamp is on, the input is on; and if [On/Off] lamp is off and the input is off. When the electronic load is on, the VFD working status indicator is

OFF.

3.4 Keyboard locking function

Press the composite key [Shift] + 8 to lock the instrument board key, and the

VFD displays *. Under this function status, the setting value cannot be changed and the mode cannot be switched. Press this key again to cancel locking.

3.5 Short-circuit analog function

The load can analog a short circuited circuit at input terminal. Under board operation, press the [Shift] + 1 key to switch short circuit status. The short circuit status does not influence existing setting value. When the [Shift] + 1 are pressed again, the load returns back to original setting status.

Actual current value consumed by load at short circuit depends on the existing working mode of load and current range. Under CC, CW and CR modes, maximum short-circuit current is 110% of current range. Under CV mode, short circuit current is equivalent to that constant voltage value of load is 0 V.

3.6 System menu function (System)

Initialize

Press [Shift] + 5 to enter system menu setting (SYSTEM MENU).

INITIALIZE SYSTEM?


Power-ON

Buzzer

Knob

Trigger

Memory

Displ

Communication

Protocol

Function

and Features

NO

YES

POWER-ON PARAMENT

RST(default)

SAV0

USBTMC

GPIB

PROTOCOL

SCPI (Default)

Extend-Table

Keep existing configurations

Recover all configurations to factory set values

Set the input status of load at powering on as "status as delivered"

Set the input status of load at powering on as SAVE 0 value

BUZZER STATE

On (default)

Off

LOAD ON KNOB MODE

Update(default)

Old

TRIGGER SOURCE

Manual (Def)

Set the buzzer status

Set the buzzer as ON status.

Set the buzzer as OFF status.

Set the pulse knob

Real-time update

Not update

Set triggering mode

Manual trigger

External

Hold

Bus

Timer

MEMORY

External signal trigger mode

Trig: IMM valid

GPIB bus trigger mode

Timer trigger mode

Group=(0-9)

Operated with Recall button to recall 100 groups memories.

0: represent group 1-10, 1: represent

11-20, and so on.

DISPLAY ON TIMER

On

Screen displays loading time

Start function

Stop function Off (default)

COMMUNICATION Select the interface for communication with a computer

RS232 4800, 8, N non parity check, 1, NONE

After interface entry, press the 9600 E even parity check CTS/RTS

Arrow Key to select RS232 19200 O odd parity check XON/XOFF configuration

38400

57600

115200

Address (0-31)

SCPI protocol

Expand SCPI protocol for compatibility of other machines


Function

and Features

3.7 Configuration menu function (Config)

Von

Protect

Measure

Press [Shift] + 6 (Config) keys to enter menu configuration.

VON LATCH

On

Point= 2V

Off

Point= 2V

PROTECT MENU

Max-p

MAX POWER

Point=149.99W

Start judgment voltage of load

Start LATCH function

Set load voltage

Stop LATCH function

Set load voltage

Set hardware power protection

Set hardware protective power value

Set software current protection A-Limit

CURRENT LIMIT

On

Point=30A

Delay= 3S

Off

P- Limit

POWER LIMIT

Point=150W

Delay= 3S

Start function

Set software current protective value

Set software current protective delay

Stop function

Set software power protection

Set software power protective value

Set software power protective delay

Time

ON-TIMER

On

Delay=10S

Off

MEASURE MENU

V-Range

VOLTAGE AUTO RANGE

On

Set LOAD ON timer

Start function

Set LOAD ON timer value

Stop function

Auto switch function of voltage range

Start auto voltage range

Off

TimeV1

TIMER VOLTAGE1

Stop auto voltage range

Measure voltage rise/drop time

Point=0.000V

TimeV2

Set starting voltage value

Measure voltage rise/drop time

TIMER VOLTAGE2

Point=120.00V

FILTER

Set stop voltage value

Smoothing function


CR-LED

Remote-Sense

Ext-Program

Function

and Features

Average Count=2^(2~16)

CR LED MODE

On

Off

REMOTE SENSE STATE

On

Off

EXTNAL PROGRAM

On

Off

Set of average count

Analog LED lamp function (under CR mode)

Open function (Under CR mode, press [Shift] + [CV] to set Vd value)

Stop function

Remote sense compensation measurement

Start remote sense compensation function

Stop remote sense compensation function

External analog quantity function

Start external 0-10V analog quantity control function

Stop external 0-10V analog quantity control function

3.8 Triggering function

Triggering function is necessary to operate dynamic pulse output and list output.

There are five triggering methods to synchronously trigger the tested instrument.

Optional triggering sources of triggering function of electronic load comprise:

 Key ([Trig] key) trigger: when key trigger is valid, press [Trig] key and the load will trigger an operation.

 External trigger signal (TTL): TRIG on the rear board is the triggering input terminal. When external trigger signal method is effective, after applying a low pulse (> 10 us), the load will trigger an operation.

 Bus trigger: when the bus trigger is valid, after the load receives a trigger command (GET or *TRG) from GPIB port, the load will trigger an operation.

 Timing trigger: when the timing trigger is valid, the load will automatically trigger an operation at intervals.

 Trigger holding: when trigger holding is valid, only when the load receives trigger command (TRIG: IMM), the load will trigger an operation.

Select the triggering sources as follows:

Operation steps

1. Press [Shift] + 5 (system) to enter system menu setting screen.

Initialize Power-ON Buzzer

2. Press Left/Right key and move to Trigger. Press [Enter] to enter triggering source selection screen.

Manual (Def) External Hold

3. Press Left/Right key to select trigger method. Press [Enter] to complete setting.


Function

and Features

Manual (Def) : Manual trigger

External : external signal trigger

Hold : special command trigger

Bus : BUS command trigger

Timer : timer trigger

4. Press [Esc] to exit setting. The system displays original values under different modes.

3.9 Dynamic test function

Through dynamic test operation, the electronic load can be switched between two setting parameters based on setting rules. This function can be used to test dynamic performances of power supply. For dynamic test operation, press

[Tran] key on the front board to enter the dynamic setting menu. Before test, firstly, set parameters related to dynamic test operation, including dynamic test mode, A value, B value, pulse width time, frequency, duty ratio, etc. Under CC mode, current ascending and descending slopes should be set for dynamic test.

The dynamic test mode can be divided into continuous mode, pulse mode and toggle mode.

3.9.1 Continuous mode

Under continuous mode, after enabling dynamic test operation, the load will be switched continuously between A value and B value.

Taking CC mode as example (operations under other modes are similar), when output voltage and current of the tested instrument are 10V and 3A respectively, the load current will switch from 1A and 2A. Set the dynamic test parameters and perform the test as follows:

1. Press [Tran] key. Operate Left/Right key. Move to On and press confirmation.

TRANSITION

for

On Off

2. Select Continuous, Press [Enter] key (The Trig lamp that indicates VFD


Function

and Features screen status is on).

TRANSITION

Continuous Pulse Toggle

3. Operate Left/Right key and select high rate and low rate. Move to the

High-Rate and press [Enter] key.

TRANSITION

High-Rate Low-Rate

4. Set ascending slope and press [Enter] key.

TRANSITION

Rise up=2.000A/uS


TRANSITION

Rise down=2.000A/uS

6. Set A value and press [Enter] key for confirmation.

TRANSITION

Level A=1A

7. Set B value and press [Enter] key for confirmation.

TRANSITION

Level B=2A

8. Set frequency value and press [Enter] key for confirmation.

TRANSITION

Frequency=50Hz (0.01-25000Hz)

9. Set duty ratio and press [Enter] key for confirmation.

TRANSITION

Duty=98% (0.1%-99.9%)

10. Start dynamic test and operate Left/Right key. Move to On and press

[Enter] key for confirmation.

TRANSITION

On Off

11. Enter the dynamic test mode.

10.0000V 0.0000A

0.00W 0 TRAN

12. Press [On/Off] key and press [Trig] key.

The load will continuously switch between A and B value. Time of operations is shown at bottom right.

13. Press CC/CV/CR/CW key or any composite function key to exit dynamic test function. Repeat Steps 1-12 to continue parameter setting and operation of dynamic test.

3.9.2 Pulse mode

Under pulse mode, after enabling dynamic test operation, the load will switch to

A value after receiving of a trigger signal. Then the load will switch back to B value and be constant at B value after maintaining A for pulse width time.


Function

and Features

10A

5A TWD

10ms

TWD

10ms

TRIG TRIG

Pulsed Transient Operation


1. Press [Tran] key. Operate Left/Right key. Move to On and press [Enter] for confirmation.

TRANSITION

On Off

2. Select Pulse, Press [Enter] key (The Trig lamp that indicates VFD screen status is on).

TRANSITION




TRANSITION

High-Rate Low-Rate


TRANSITION

Rise up=2.000A/uS


TRANSITION

Rise down=2.000A/uS


TRANSITION

Level A=1A


TRANSITION

Level B=2A

8. Set time width and press [Enter] key for confirmation.

TRANSITION

Pulse Width=5S (0.00002-3600S)



TRANSITION

On Off



Function

and Features

10.0000V 0.0000A

0.00W 0 TRAN

11. Press [On/Off] key to open input and press [Trig] key (Triggering key)

The load will switch after receipt of every trigger signal. The load will continuously switch between A and B value. Time of operations is shown at bottom right.


3.9.3 Toggle mode

Under toggle mode, after enabling dynamic test operation, the load will be switched continuously between A value and B value after receipt of every trigger signal.

10A

5A

TRG

TRG

Toggled Transient Operation


1. Press [Tran] key. Operate Left/Right key. Move to On and press [Enter] for confirmation.

TRANSITION

On Off

2. Select Toggle, Press [Enter] key (The Trig lamp that indicates VFD screen status is on).

TRANSITION




TRANSITION

High-Rate Low-Rate


TRANSITION

Rise up=2.000A/uS



Function

and Features

TRANSITION

Rise down=2.000A/uS


TRANSITION

Level A=1A


TRANSITION

Level B=2A



TRANSITION

On Off


10.0000V 0.0000A

0.00W 0 TRAN

10. Press [On/Off] key to open input and press [Trig] key (Triggering key).

The load will switch after receipt of every trigger signal. The load will switch between A and B value for one time. Time of operations is shown at bottom right.


3.10 OCP test function

OCP

TEST

The IT8800 series electronic load is provided with over-current protection test function (OCP). Under OCP test mode, when input voltage reached Von value, delay for a while for the electronic load to latch. Ascend value by step value at regular interval. At the same time, check the load input voltage and judge whether it is higher than standard voltage value. If higher, it indicates that OCP does not occur. Repeat current stepping operation till the load operates to the cutoff current; if lower, it indicates that OCP does occur. Check whether the existing current value is within target scope again. If yes, PASS the test.

Press [Shift] + [CC] (OCP) keys to enter OCP test function setting screen.

Run

Recall

Edit

OCP TEST

OCP TEST

Recall OCP File=1

Operate OCP test documents

Recall OCP test documents (1-5)

OCP TEST

1:Voltage on level=0.000V

2:Voltage on Delay=0.00S

Set Von voltage value

Set Von voltage delay time

3:Current Range=0.000A

4:Start Current=0.000A

5:Step Current=0.000A

6:Step Delay=0.00S

7:End Current=0.000A

Set working current range

Set initial current value

Set step current value

Set step delay time

Set cutoff current value


8:OCP Voltage=0.000V

9:Max Trip Current=0.000A

10:Min Trip Current=0.000A

Function

and Features

Set OCP value

Set over-current range

(maximum value)

Set over-current range

(minimum value)

Save OCP test documents Save OCP File=1 (1-5)

Operating steps:

1. Press [Trig] key to start OCP test. If within range, PASS the test and the board will display as follows:

9.9973V 0.0005A

0.01W 5.100A PASS STOP

If not, there is FAULT and the board will display as follows:

9.9973V 0.0005A

0.01W 5.100A FAULT STOP

2. End test. The User should return back to setting screen for resetting.

NOTE

If the set OCP voltage value is higher than the power voltage value, the OCP will fail to operate and the board will display as follows:

9.9990V 0.0009A

0.01W 0.100A FAULT STOP

3.11 OPP test function

OPP

TEST

The IT8800 series electronic load is provided with overpower protection test function (OPP). Under OPP test mode, when input voltage reached Von value, delay for a while for the electronic load to latch. Ascend value by step value at regular interval. At the same time, check the load input voltage and judge

Run

Edit whether it is higher than standard voltage value. If higher, it indicates that OPP does not occur. Repeat power stepping operation till the load operates to the cutoff power; if lower, it indicates that OPP does occur. Check whether the existing power value is within target scope again. If yes, PASS the test.

Press [Shift] + [CW] (OPP) keys to enter OPP test function setting screen.

Recall

OPP TEST

OPP TEST

Recall OPP File=1

OPP TEST

Operate OPP test documents

Recall OPP test documents (1-5)


1:Voltage on level=0.000V

2:Voltage on Delay=0.00S

3:Current Range=0.000A

4:Start Power=0.000W

5:Step Power=0.000W

6:Step Delay=0.00S

7:End Power=0.000W

8:OPP Voltage=0.000V

9:Max Trip Power =0.000W

10:Min Trip Power =0.000W

Function

and Features

Set Von voltage value

Set Von voltage delay time

Set working current range

Set initial power value

Set step power value

Set step delay time

Set cutoff power value

Set OPP value

Set overpower range (maximum value)

Set overpower range (minimum value)

Save OPP test documents Save OPP File=1 (1-5)

Operating steps:

1. Press [Trig] key to start OPP test. If within range, PASS the test and the board will display as follows:

9.996V 0.0007A

0.01W 49.10W PASS STOP

If not, there is FAULT and the board will display as follows:

9.996V 0.0007A

0.01W 48.6W FAULT STOP

2. End test. The User should return back to setting screen for resetting.

NOTE

If the set OPP voltage value is higher than the power voltage value, the OPP will fail to operate and the board will display as follows:

9.996V 0.0007A

0.01W 0.1W FAULT STOP

3.12 Battery discharge test function

In the IT8800 series electronic load, constant current mode is applied for capacity test with programmatic setting of cutoff level/capacity/discharging time

If cutoff level is set as the stop condition, the system determines whether the battery is about to reach the set threshold value or unsafe status when the battery voltage is low, and if yes, an automatic stop will be activated. During the test, the voltage, time and discharged capacity of the battery can be observed.

Battery discharge test is a necessary step before battery replacement for it can reflect reliability and remaining life of battery.


STOP

CONDITION

Function

and Features

Enter [Shift] + 3 to enter function testing screen of battery discharge test.

Voltage

STOP Condition

Stop Voltage

STOP Condition

Set cutoff voltage

Capability

Timer

Stop Capability

STOP Condition

Stop Timer

Set battery cutoff capacity

Set discharge time

Operation method:

1. Press [On/Off] key to cut off load input status. Connect the battery to be tested. Under CC mode, press [Shift] + 3 keys to enter battery discharge function menu and select one of the three methods for test based on actual requirements.

2. Set discharge stopping conditions:

 Type I: Press [Shift] + 3 keys and select Capability. Press [Enter] key and the VFD displays Cutoff Capability =Ah(0~999.999Ah). Set battery stop capacity. Press [Enter] key for confirmation. When set battery capacity is reached, the load input status will automatically be OFF.

 Type II: Press [Shift] + 3 keys and select Voltage. Press [Enter] key and the VFD displays Stop Voltage=V. Set cutoff voltage and press

[Enter] key to start discharge test. When the battery voltage drops to cutoff voltage, the load input status will automatically be OFF.

 Type III: Press [Shift] + 3 key and select Timer. Press [Enter] key and the VFD displays Stop Timer=S(0~99999S). Set discharge time. When the set stop time is reached, the load input status will automatically be

OFF.

3. Press [Trig] key to start testing. The board will display discharge voltage, current discharge time and capacity (AH).

4. Press [Esc] key to exit battery capacity test mode in any three methods.

3.13 CR-LED test function

With adding of diode break-over voltage setting in the IT8800 series electronic load under conventional CR mode, the electronic load only works when voltage applied at its both ends is higher than the diode break-over voltage to give a real simulation of diode working principle, i.e., the ripple current at real LED test.

The I-V curve of LED is as shown below. Under conventional CR mode, the electronic load only simulates the static working point of diode as shown in the red circle of the following figure. It is unable to verify the dynamic characteristics of LED under normal working conditions, and the status of accurate ripple current.


Function

and Features

Setting CR-LED Mode

Example: LED driver specification

The output current is 200mA and the range of output voltage is from 45V to

62V.

Operating steps:

1. Start CR-LED function.

1) Press [Shift] + 6 keys to enter configuration menu.

2) Press Right Key and select “CR-LED”. Press [Enter] key for entry.

Select “on” and press [Enter] key.

3) Press [Esc] key to exit.

2. Set CR mode and Vd value

For example, the output voltage of LED driver is 50V, verify that whether the output current of LED is rated current 200mA.

1) Press [CR] key and set corresponding constant resistance. (Set

CR=50Ω

)

2) Press [Shift] + [CV] keys for a series of related setting: range=7500.0, high=130V, low=0V, which may remain the original values. Vd will be set based on the calculation below. (Set Vd=40V)

3) Press the [Enter] key to save the settings.

3. Press [On/Off] key to turn on load input.

Calculation method of Vd and R:

Definition:

 Vo: constant working voltage of load LED of LED constant current source;

 Io: output current of LED constant current source;

 Vd: break-over voltage of diode (string);

 R: constant resistance.

V-I curve of LED is as shown below.


Function

and Features

According to four parameters above and the V-I curve of LED, you can calculate the value of R and Vd.

R

=

V

2

I

2

−

−

V

1

I

1

V d

=

V o

−

(

I

×

R

)

0

NOTE

The value of V2, V1, I2 and I1 should be close to the static working point of LED as shown in the red circle above.

Or you can roughly calculate the value of R and Vd with the following equation.

V d

=V*0.8 R=0.2V/I

Where:

 V: constant working voltage of load LED of LED constant current source;

 I: output current of LED constant current source;

 V d

: break-over voltage of diode (string);

 R: constant resistance.

In the example: Vd=50V*0.8=40V R= （ 0.2*50V ） /

0.2A=50Ω

.

3.14 Measurement of voltage rise time

The IT8800 series electronic load is provided with special voltage rise/drop time measurement function. This function gives a simple analog of voltage rise/drop speed of oscilloscope test power.

Operation methods:

Set initial voltage and final voltage

1. Press [Shift] + 6 keys to enter configuration menu. Press Right key. Select

“Measure” and press [Enter] key.

2. Press Left/Right Key to select “TimeV1”. Press [Enter] key. Press numeric keys to set initial voltage value and press [Enter] key.

3. Press Left/Right Key to select “TimeV2”. Press [Enter] key. Press numeric


Function

and Features keys to set final voltage value and press [Enter] key.

4. Press [Esc] to exit setting.

Start timer function

5. Press [Shift] + 5 keys to enter system menu. Press Right key till “Displ” flicks and press [Enter] key.

6. Press Left/Right Key to select “On”. Start timer function and press [Enter] key.

7. Press [Esc] to exit setting.

8. VFD second line will display time 0.0000S between power value and set value.

OFF CC

0.0001V 0.0002A

0.00W 0.0000S CC=0.000A

Measurement of rise time

9. Connect DC power to be tested to the input terminal of the electronic load.

The power is set with a value that is higher than the set final voltage value.

Keep power output in OFF status.

10. Set a constant current value on the load and open the load input.

11. Open power output.

12. The electronic load timer starts timing. After ending, time will keep stable, which is rise time of voltage.

13. Close the power output. The electronic load VFD will display voltage drop time.

3.15 Configuration save function

The electronic load can save some commonly-used parameters in 100-group

(0-99) NVM for convenient and fast usage. Saving parameters comprise working mode, voltage, current, etc. The Save key can be used for saving parameters. The RECALL key is for quick invoking.

Operation steps

If the operator needs to save configured parameter values for direct recall in follow-up operation, refer to the steps below: e.g., power supply 6V and 3A. The electronic load works under constant current

(CC) 1A. Save "CC 1A" in register 9 for recall.

 SAVE

1. Set parameters and press [Shift] + 4 (Save) to save data. Press 9 key (to select in which group the data is to be saved).

5.8949V 0.99994A

5.89W SAVE 9

2. Press [Enter] key for confirmation.

5.8949V 0.99994A

5.89W cc=1.000A


Function

and Features

 RECALL

1. Press [Recall] key and press 9 (to select from which group the data is recalled).

5.8949V 0.99994A

5.89W cc=1.000A

Memory function

When you want to recall the data saved in the memory, you should set memory group in the system menu first.

Group 0 means you can recall data saved in 0-10 groups. Group 1 means you can recall data saved in 11-20 groups. Group2-Group 9 can be concluded in the same manner.

3.16 VON function

When testing some power products with slow voltage rise speed, if the electronic load input is opened before power, the power may latch protection. In this way, the user may set VON value. The electronic load only latches when power voltage is higher than this value.

Press [Shift] + 6 keys to enter configuration menu. Set voltage value in Voltage on under configuration menu to control on/off status of electronic load. When

VON LATCH function is started, it indicates that Von Point latches load status.

NOTE

Please confirm whether it is necessary to set loading voltage, a step that provides convenience for limiting working voltage value. If not necessary, do not set the loading voltage without authorization to prevent unnecessary trouble from failure of loading.

If the instrument cannot load, please firstly check whether the VON function is set. If yes, reset the Von value to minimum value (which may be directly set as 0. If minimum voltage value of instrument is not 0, press 0 for confirmation and the menu will automatically set the value as minimum value).

This function is invalid under CV mode.

When VON LATCH function is started, the load starts load test only when the power voltage rises and is higher than Von Point loading voltage. When the power voltage drops and is lower than Von Point unloading voltage, the load will not unload.


Function

and Features

Load working range when VON LATCH is started

3.17. Protective function

The load is provided with following protective functions: overvoltage protection

(OVP), over-current protection (OCP), over-power protection (OPP) and over-temperature protection (OTP).

If any one of the above protections is enabled, the load will have corresponding actions. Press any key on the front board to reset protection functions. For example, in case of over-temperature protection, the load will give alarm and the input will automatically switch to OFF status. The load VFD will display OTP.

3.17.1 Over-voltage protection (OVP)

The load will be immediately OFF and the buzzer will sound if the overvoltage circuit is triggered. OV and VF bits of the status register will be set and OVP will be displayed on the screen of the load till resetting. In case of overvoltage protection, the VF pin of the 8-pin connector on rear board of the load outputs

TTL high level and the VF pin can be used for controlling output status of the power to be tested.

Clear overvoltage protection status:

Inspect whether voltage of object under test is within load rated voltage or set protection voltage range. If not, disconnect the object. Press any key on front board (or send command to PROTection:CLEar), the load front board (OVP) word will get cleared and the load will exit OVP protection status.

3.17.2 Over-current protection (OCP)

The electronic load is provided with two kinds of over-current protections:


Function

and Features hardware over-current protection and software over-current protection.

 Hardware over-current protection: maximum load current of the electronic load is limited within about 110% of the existing current range by hardware.

When the hardware triggers over-current protection, OC bit of the status register will be set; when such protection is removed, the OC bit will be reset. The existing On/Off status of load will not be changed by the hardware over-current protection.

 Software over-current protection: the user can set load software over-current protection value following steps: press [Shift] + 5 key >Protect>

A-limit (set as ON). A point is set as OCP current value and A delay set as pre-alarm delay time. When software over-current protection function is on, if the loading current value exceeds delay of such over-current protection set value, the load will automatically be OFF and the VFD will display OCP.

At the same time, OC and PS bits of the status register will be set and keep till reset.

Clear over-current protection status:

Inspect whether current of object under test is within load rated current or set protection current range. If not, disconnect the object. Press any key on front board (or send command to PROTection:CLEar), the load front board (OCP) word will get cleared and the load will exit OCP protection status.

3.17.3 Over-power protection (OPP)

The electronic load is provided with two kinds of overpower protections: hardware over-power protection and software overpower protection.

 Hardware over-power protection: the user can set load hardware overpower protection. Load overpower will be limited to existing power value. The existing On/Off status of load will not be changed by the hardware overpower protection.

 Software overpower protection: the user can set load software overpower protection value following steps: [Shift] + 5 >Protect>Point Set power value. P-limit is set as pre-alarm delay time. If the loading power value exceeds delay of such overpower protection set value, the load will automatically be OFF and the VFD will display OPP. At the same time, OP and PS bits of the status register will be set and keep till reset.

Clear overpower protection status

Inspect whether power of object under test is within load rated power or set protection power range. If not, disconnect the object. Press any key on load front board (or send command to PROTection:CLEar), the load front board

(OPP) word will get cleared and the load will exit OPP protection status.

3.17.4 Over-temperature protection (OTP)

When internal power device of load is higher than about 85 °C, the load is under temperature protection. At this time, the load will automatically be OFF and VFD will display OTP. At the same time, OT and PS bits of the status


Function

and Features register will be set and keep till reset.

Clear over-temperature protection

When load temperature is decreased to protection point, press any key on front board (or send command to PROTection:CLEar), the load front board (OTP) word will get cleared and the load will exit OTP protection status.

3.18 List operation (LIST)

LIST mode provides an accurate, fast and low-cost way to complete any complicated current change mode, which enables synchronization of internal or external signals in multiple quasi-bit load precision tests.

When different trigger sources are selected, the LIST function will form a variety of complex sequences by editing step value, pulse width and slope of each step to meet complicated test requirements. LIST parameters comprise designation of input list file, input step count (2-84 steps at maximum), step time (0.00002 s

– 3600 s) as well as setting value and slope of each step. The list file can be stored in non-volatile RAM available for a quick output in case of usage. The user can edit 7 groups of list files at maximum.

If the load operation mode is at List operation, the load will start List operation, when it receives a trigger signal till completion or receipt of another trigger signal. Before List operation, be sure to edit List operation files and save them in load non-volatile RAM. Refer to examples below to know how to execute List operation through board. It is assumed that output voltage and current of the tested instrument are 10V and 3A respectively and the load is under CC mode.

Trigger

0 1 2 3 4 5

List count=1 List count=2

List sequence

Edit the LIST file and trigger to operate this file. Operation steps:

Operation steps

1. Press [List] key. Operate Left/Right key. Move to Edit and press [Enter] key.

LIST

On Recall Edit

2. Operate Left/Right key and move to the High-Rate and press [Enter] key.

EDIT LIST

High-Rate Low-Rate

3. Set CC range and press [Enter] key.


Function

and Features

EDIT LIST

Current Range=3A

4. Edit number of steps. Press 2 key to edit two steps. Press [Enter] key for confirmation.

EDIT LIST

File Step=2 (2-84)

5. Edit current value in step 1And press [Enter] key for confirmation.

EDIT LIST

Step 001 Level=1A

6. Edit slope in step 1And press [Enter] key for confirmation.

EDIT LIST

Step 001 Rate=0.1A/uS

7. Edit time in step 1And press [Enter] key for confirmation.

EDIT LIST

Step 001 Width=5S

8. Edit current value in step 2And press [Enter] key for confirmation.

EDIT LIST

Step 002 Level=2A

9. Edit slope in step 2And press [Enter] key for confirmation.

EDIT LIST

Step 002 Rate=0.1A/uS

10. Edit time in step 2And press [Enter] key for confirmation.

EDIT LIST

Step 002 Width=5S

11. Edit repeat count and press [Enter] key for confirmation.

EDIT LIST

Repeat Count=3

12. Save all edited files and press [Enter] key for confirmation.

EDIT LIST

Save List File=1(1-9)

13. Operate Left/Right key and move to On. Press [Enter] key (The Trig lamp that indicates VFD screen status is on). Press [Esc] key to exit setting.

LIST

On Recall Edit

List operation running

15. Press CC/CV/CR/CW key or any composite function key to exit List test function.

For direct recall of existing List files and triggering of List operation, refer to steps below:

Operation steps

1. Press [List] key and ensure that ON lamp flicks. If not, press [Enter] before operating Left/Right key. Move to [Recall] and press [Enter] key.

LIST


Function

and Features

On Recall Edit

2. Select edited files and press [Enter] for confirmation.

Recall List File=1

3. Operate Left/Right key and move to On. Press [Enter] key (The Trig lamp that indicates VFD screen status is on). Press [Esc] key to exit setting.

LIST

On Recall Edit

4. Press [On/Off] key to open input and press [Trig] key (Triggering key)

List operation running.

3.19 Terminal function of rear board

Terminals on IT8800 rear board comprise remote sensor terminal, external trigger terminal, external analog control terminal, voltage fault indication terminal, external On/Off control terminal and current monitoring terminal.

Terminal schematic (as shown below):

Pin

Sense+, Sense-

Pin function

Remote sense terminal

EXT PRG+, EXT PRG- External analog control terminal

Negative input terminal for TRIG, ON and VF

TRIG Positive input terminal for trigger

ON

VF

Positive input terminal for external On/Off control

Positive input terminal for voltage fault indication

3.19.1 Remote sense compensation functions

Under CC, CV, CR or CW mode, if the load consumes large current, a large voltage drop will be detected in connection line between tested instrument and load terminal. To ensure measurement accuracy, a remote sense measurement terminal is provided at load rear board to compensate voltage drop lost in wire.

Remote sense operation:

SENSE (+) and SENSE (-) are remote input terminals. To avoid voltage drop caused by long input wire of load, the remote sense allows direct measurement at input terminal source so as to improve measurement accuracy.

Before using the remote sense measurement function, the user must set the load in remote sense measurement mode.

Setting procedures:

Press [Shift] + 6 to enter menu. Move Left/Right key and select Remote-Sense.

Press [Enter] key and select ON to start Sense function.


Wiring Diagram of Remote Sense

Function

and Features

3.19.2 External trigger operation

When rear board triggering mode is selected, firstly, set the trigger source as

External and the triggering signal is input from the rear board TRIG terminal.

Set the triggering sources as follows:

Press [Shift] + 5 keys to enter system menu. Click Right key till Trigger appears and flicks. Press [Enter] to entry and press to select External. Press

[Enter] for confirmation. Press [Esc] to exit the menu.

When external trigger is selected, the positive and negative TRIG terminals will generate trigger signal and the low pulse is valid.

Input corresponding to one trigger can be used for triggering dynamic test, LIST test and auto test.

3.19.3 External analog quantity test

Loading voltage or current of the electronic load can be controlled by EXT PRG

(positive and negative) analog quantity terminals on rear board. Connect 0-10V adjustable voltage at the EXT PRG terminal to analog input from 0- full range so as to adjust input voltage and current of load (10V corresponds to voltage or current of load at full range).

3.19.4 External On/Off Control

The load input switches can be controlled by the external TTL electrical level.

During external input control, the key will become invalid and the load input switches can only be controlled by the external TTL electrical level. The load input will be switched on in case of low level external input; and the load input will be switched off in case of high level external input.


Function

and Features

3.19.5 Voltage fault indication terminal

When load is under overvoltage protection or terminal reverse polarity protection, VF pin voltage fault indication terminal outputs high level.

3.19.6 Current monitoring (I Monitor)

The 0-10V analog quantity output signal of current monitoring output terminal represents input current to which the terminal belongs from 0 to full range. An external voltmeter or oscilloscope can be connected to display input current change.

3.20 External Signal Control Interface

Besides the RS232 communication interface, the rear panel is also equipped with a DB-9 COM interface, which is the external signal control interface used in auto test. The pin definitions are as follows.

Pins of Plug

5

6

7

8

9

Base pin Description number

1

2

The auto test runs last step.

The auto test starts to run.

3 During the auto test, the input is turned on.

4 Output the failure signal of the auto test.

GND

The auto test runs next step.

The auto test pauses.

The auto test outputs via signal.

The warning tone signal of auto test outputs.

You can control the auto test process and test results by transmitting input/output signals through external signal control interface. Different pins of the interface control different functions. Detailed instructions are listed on the above table.

Under external analog quantity control mode, you can switch CC mode through pin 1 of the interface and switch CV mode through pin 6.

3.21 Auto test function

The IT8800 series electronic load delivers strong auto test functions, which can analog several tests. A total of 10 groups of test files can be edited, and each group test file has 10 steps. Therefore, a maximum of 100 steps can be edited and saved in EEPROM (address).

Edit test files following the steps below:


Function

and Features

NOTE

In the following editing procedures, “Y” indicates selected status. To cancel selected status, press numeric key of corresponding step again.

Operation steps

1. Press [Shift] + 2 (Program).

PROGRAM

Run Recall Edit

2. Operate Left/Right key and move to Edit. Press [Enter] key to enter editing test files.

EDIT PROGRAM

Active Sequence=0987654321

3. Press numeric key to select required testing steps. The Active Sequence

=09876543YY indicates that 1/2 steps have been selected. Press [Enter] key for confirmation.

EDIT PROGRAM

Active Sequence=09876543YY

4. Select whether pause is necessary for these two steps. If step 2 is to be paused, press 2 key. If not, directly press [Enter] key for confirmation.

EDIT PROGRAM

Pause Sequence=

□□□□□□□□Y1

5. Select whether short-circuit test is necessary for these two steps. If step 1 is to be tested, press 1 key. If not, directly press [Enter] key for confirmation.

EDIT PROGRAM

Short Sequence=

□□□□□□□□2Y

6. Set loading time of step 1. If 2S is required, directly press 2 key on the board. Press [Enter] key for confirmation.

EDIT PROGRAM

SEQ01 On Time=2S

7. Set unloading time of step 1. If 2S is required, directly press 2 key. Press


EDIT PROGRAM

SEQ01 Off Time=2S

8. Set test delay time of step 1. If 1S is required, directly press 1 key. Press

[Enter] key for confirmation. Tpf is delay time before measurement.

EDIT PROGRAM

SEQ01 P/F Delay Time=1S

9. Set loading time of step 2. If 2S is required, directly press 2 key on the board. Press [Enter] key.

EDIT PROGRAM

SEQ02 On Time=2S

10. Set unloading time of step 2. If 2S is required, directly press 2 key. Press

[Enter] key.

EDIT PROGRAM

SEQ02 Off Time=2S


Function

and Features

11. Set test delay time of step 2. If 1S is required, directly press 1 key. Press

[Enter] key. Tpf is delay time before measurement.

EDIT PROGRAM

SEQ02 P/F Delay Time=1S

Tpf is delay time before measurement.

12. Set conditions for stop test. COMPLETE means to stop after all tests are completed and FAILURE means to stop in case of test error. Press [Enter] key for confirmation.

PROGRAM

Complete-Stop Failure-Stop

13. Determine whether to link to next group of test file. If it is to link to second group, press 2 . 0 means not to link to other test files. Press [Enter] key for confirmation.

PROGRAM

Chain Program File=0 (0-10)

 Correspondence Table of Auto Test Files and Step Parameter Saving

Program 1 Sequence 1 2 3 4 5 6 7 8 9 10

Save Group

Program 2 Sequence

Save Group

:

1

1

2 3

2 3

4 5

4 5

6 7 8 9 10

6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

:

Program 10 Sequence 1 2 3 4 5 6 7 8 9 10

Save Group 91 92 93 94 95 96 97 98 99 100

14. Save the programmed files in EEPROM. A total of 10 groups of files can be saved. If it is to save edited files in group 1, press 1 key. Press [Enter] key for confirmation.

PROGRAM

Save Program File=1 (1-10)


Function

and Features

15. Press ESC key to exit editing menu.

The above steps only set entire framework of auto tests. Additional setting is required for specific parameters in each step. This design will facilitate modification of parameters in a single step.

16. Select required working mode. Set working voltage/current/power/resistance. Press [Shift] + [CV] to enter parameter setting.

10.0000V 0.0000A

0.00W CC=1.000A

17. It is assumed that step 1 edits CC mode as follows: current: 2A, maximum voltage value: 10V, and minimum voltage value: 2V; and step 2 edits CV mode as follows: voltage: 3V, maximum current value: 5A, and minimum current value: 0A. After parameter setting in each step, press [Esc] to exit menu setting. And press [Shift] + 4 for saving. Setting at each step should be saved. The saving position is same as that of step number. Settings at each step should be independently saved. Refer to the

“Correspondence Table for Auto Test Files and Single-Step Parameter

Saving Positions”.

18. It is necessary to recall test files for running after editing auto test files.

Recall test file for running

To recall edited test files from EEPROM quickly after re-energizing instrument, refer to the method below.

1. Press [Shift] + 2 .

PROGRAM

Run Recall Edit

2. Move Left/Right Key and select [Recall] key. Press [Enter] key for confirmation.

RECALL PROGRAM

Recall Program File=1

3. Move Left/Right Key and select Run. Press [Enter] key for confirmation.

PROGRAM

Run Recall Edit

4. Display auto test file 1.

PRG01 STOP

5. Press [Trig] key.

Operate auto test file 1. Press [Pause] key on board to pause auto test.

Press Move key for next step.


Technical

Specifications

Chapter4 Technical Specifications

4.1 Major technical parameters

Constant voltage

mode

Constant current

mode

Constant resistance mode *1

Constant power

Mode *3

Model

Input voltage

Rated value

( 0-40 °C)

IT8813

0~120V

IT8813B

0~500V

Input current

Input power

Min. operating voltage

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0~6A

0.1V/6A

750W

0~60A

1.0V/60A

0~3A

0.36V3A

750W

0~30A

3.6V/30A

0.1~18V

1mV

0.1~120V

10mV

0.1~50V

1mV

0.1~500V

10mV

0~6A

0.1mA

0.02

Ω

~

10Ω

±(0.025%+0.05%FS)

0~60A 0~3A

1mA 0.1mA

16bit

±(0.05%+0.05%FS)

10Ω~7.5KΩ

0.15

Ω

~

10Ω

16bit

10Ω~7.5KΩ

0.01%+0.0008S

0.01%+0.08S *2 0.01%+0.0008S

0.01%+0.08S

*2

0~30A

1mA

Range

Resolution

Accuracy

750W

10mW

0.2%+0.2%FS

750W

10mW

0.2%+0.2%FS

T1&T2

Accuracy

Ascending/descending slope *4

Minimum rise time *5

Dynamic mode

CC mode

20uS~3600S /Res:1 uS

5uS±100ppm

0.0001~0.25A/uS


5uS±100ppm

0.001~2.5A/uS 0.0001~0.1A/uS 0.001~1A/uS

Read-back voltage

Read-back current

Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Overpower protection

≒ 20uS ≒ 20uS ≒ 20uS

0~18V

1 mV

Measuring range

0~120V

10 mV

0~50V

1 mV

±(0.025%+0.025%FS)

0~6A

0.1mA

±(0.05%+0.05%FS)

750W

10mW

0~60A

1mA

±(0.2%+0.2%FS)

Protection range

≒ 760W


≒ 760W

≒ 20uS

0~500V

10 mV

0~3A

0.1mA

0~30A

1mA

±(0.05%+0.05%FS)

750W

10mW

±(0.2%+0.2%FS)

51

Overcurrent protection

Overvoltage protection

Overtemperature protection

≒ 6.6A

≒ 130V

≒ 85 ℃

≒ 66A

Technical

Specifications

≒ 3.3A

≒ 530V

≒ 33A

≒ 85 ℃

Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)

Input terminal impedance

Dimension

Weight

≒ 6.6A

0V

Specification

66A

0V

≒ 15mΩ ≒ 15mΩ

300KΩ

W439*H133.3*D580 （ mm ）

7.05KG

≒ 3.3/3A

0V

≒ 120mΩ

1MΩ

7.05KG

≒ 33/30A

0V

≒ 120mΩ

Rated value

( 0-40 °C)


mode


mode


Constant power

Mode *3

Model

Input voltage

IT8814

0~120V

IT8814B

0~500V

Input current

Input power


Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0~12A

0.12V at 12A

1500W

0~120A

1.2V at 120A

0~6A

1200W

0.36V at 6A

0~60A

3.6V at 60A

0.1~18V

1mV

0~12A

1mA

0.01

Ω

~

10Ω

0.1~120V

10mV

0.1~50V

1mV

0.1~500V

10mV

±(0.025%+0.05%FS)

0~120A

10mA

0~6A

0.1mA

0~60A

1mA

16bit

±(0.05%+0.05%FS)

10Ω~7.5KΩ

0.1

Ω

~

10Ω

16bit

10Ω~7.5KΩ

0.01%+0.08S *2 0.01%+0.0008S

1500W

100mW

0.2%+0.2%FS

0.01%+0.08S

0.01%+0.0008S

*2

1200W

100mW

0.2%+0.2%FS

T1&T2

Accuracy



Dynamic mode

CC mode


5uS±100ppm

0.001~0.25A/uS

≒ 30uS

0.01~2.5A/uS

≒ 30uS

Measuring range


5uS±100ppm

0.0001~0.1A/uS 0.001~1A/uS

≒ 20uS ≒ 20uS


Technical

Specifications



Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0~18V

1 mV

0~120V 0~50V

10 mV 1 mV

±(0.025%+0.025%FS)

0~12A

1mA

0~120A

10mA

±(0.05%+0.05%FS)

1500W

100mW

±(0.2%+0.2%FS)

0~6A

0.1mA

0~60A

1mA

±(0.05%+0.05%FS)

1200W

100mW

0~500V

10 mV

±(0.2%+0.2%FS)





≒

13.2A


≒ 1550W

≒

132A

≒ 130V

≒ 85 ℃

≒ 13.2A

Specification

132A

0V 0V

≒

6.6A

≒ 1250W

≒

66A

≒ 530V

≒ 85 ℃

Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)


≒ 10mΩ

300KΩ

≒ 10mΩ

≒ 6.6/6A

0V

≒ 60mΩ

1MΩ

≒ 66/60A

0V

≒ 60mΩ

Dimension

Constant power

Mode *3

Model

Input voltage

W439*H133.3*D580 （ mm ）

IT8816

0~120V

IT8816B

0~500V

Rated value

Input current

Input power

( 0-40 °C)



mode

Range

Resolution

Accuracy

Range Constant current

mode


Resolution

Accuracy

Range

Resolution

Accuracy

0~24A

0.12V/24A

0.1~18V

1mV

3000W

0~240A

1.2V/240A

0.1~120V

10mV

0~10A

0.3V/10A

0.1~50V

1mV

2.5KW

0~100A

3V/100A

0.1~500V

10mV

0~24A

1mA

0.01

Ω

~

10Ω

0.01%+0.08S *2

±(0.025%+0.05%FS)

0~240A

10mA

0.01%+0.0008S

0~10A

1mA

0~100A

10mA

16bit

±(0.05%+0.05%FS)

10Ω~7.5KΩ

0.03

Ω

~

10Ω

16bit

10Ω~7.5KΩ

0.01%+0.08S

0.01%+0.0008S

*2

Range

Resolution

Accuracy

3000W

100mW

0.2%+0.2%FS

2.5KW

100mW

0.2%+0.2%FS


Technical

Specifications

T1&T2

Accuracy





Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Dynamic mode

CC mode


5uS±100ppm

0.001~0.25A/uS 0.01~2.5A/uS *


5uS±100ppm

0.001~0.1A/uS 0.01~1A/uS *

≒

60uS

≒

60uS

≒

80uS

0~18V

1 mV

Measuring range

0~120V

10 mV

0~50V

1 mV

±(0.025%+0.025%FS)

0~24A

1mA

±(0.05%+0.05%FS)

3000W

100mW

0~240A

10mA

±(0.2%+0.2%FS)


≒

80uS

0~500V

10 mV

0~10A

1mA

0~100A

10mA

±(0.05%+0.05%FS)

2.5KW

100mW

±(0.2%+0.2%FS)

≒

2550W

≒ 3050W




Overtemper ature protection

≒

26.4A

≒ 130V

≒ 85 ℃

≒

264A

≒

11A

≒ 530V

≒ 85 ℃

≒

110A

Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)


Dimension

Rated value

( 0-40 °C)

Model

Input voltage

Input current

Input power

Min. operating

voltage

≒ 26.4A

0V

Specification

≒ 264A

0V

≒ 5mΩ

300KΩ

≒ 5mΩ

W439*H133.3*D580 （ mm ）

0~12A

0.12V/12A

IT8813C

0~120V

750W

≒ 11A

0V

≒ 30mΩ

1MΩ

0~120A

≒ 110A

0V

≒ 30mΩ

1.2V/120A


Technical

Specifications


mode


mode

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Constant

*1

Range resistance mode Resolution

Accuracy

Constant power

Range

Resolution

Mode *3

Accuracy

T1&T2

Accuracy





Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0.1

~18V

1mV

±(0.025%+0.05%FS)

0~12A

1mA

±(0.05%+0.1%FS)

0.02Ω

~

10Ω

0.1

~120V

10mV

±(0.025%+0.05%FS)

0~120A

10mA

±(0.05%+0.1%FS)

10Ω~7.5KΩ

16 bit

0.01%+0.08S *2

750W

100mW

0.2%+0.2%FS

0.01%+0.0008S

Dynamic mode

CC mode


5uS±100ppm

0.001~0.25A/uS

≒ 30uS

0.01~2.5A/uS *

≒ 30uS

Measuring range

0~18V

1 mV

±(0.025%+0.025%FS)

0~12A

1mA

0~120V

10 mV

±(0.025%+0.025%FS)

0~120A

10mA


±(0.05%+0.1%FS)

750W

10mW

±(0.2%+0.2%FS)




Overtemperatur e protection

≒ 13.2A

≒ 760W

≒ 130V

≒ 85 ℃

Short circuit

Current (CC)

Voltage (CV)


Resistance (CR)

Dimension

Specification

≒ 13.2A

0V

≒ 10mΩ

300KΩ

W439*H133.3*D580 （ mm ）


≒ 132A

132A

0V

≒ 10mΩ

55

Technical

Specifications

Rated value

( 0-40 °C)


mode


mode


Constant power

Mode *3

Model

Input voltage

Input current

Input power


Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

T1&T2

Accuracy





Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy




Overtempera ture protection

IT8814C

0~120V

0~24A 0~240A

1500W

0.15V/24A

0.1~18V

1mV

±(0.025%+0.05%FS)

0~24A

1mA

±(0.05%+0.1%FS)

0.01Ω

~

10Ω

1.5V/240A

0.1~120V

10mV

±(0.025%+0.05%FS)

0~240A

10mA

±(0.05%+0.1%FS)

10Ω~7.5KΩ

16 bit

0.01%+0.08S *2 0.01%+0.0008S

1500W

100mW

0.2%+0.2%FS

Dynamic mode

CC mode


5uS±100ppm

0.0001~0.25A/uS

≒ 60uS

Measuring range

0~18V

0.1 mV

±(0.025%+0.025%FS)

0~24A

1mA

±(0.05%+0.05%FS)

1500W

100mW

±(0.2%+0.2%FS)

0~120V

1 mV

±(0.025%+0.025%FS)

0~240A

10mA


0.001~2.5A/uS *

≒ 60uS

≒ 1550W

≒ 26.4A ≒ 264A

≒ 130V

≒ 85 ℃


Technical

Specifications

Current (CC)

Short circuit Voltage (CV)

Resistance (CR)

Specification

≒ 26.4A

0V

≒ 6mΩ

264A

0V

≒ 6mΩ


300KΩ

Dimension W439*H133.3*D580 （ mm ）

Rated value

( 0-40 °C)


mode


mode


Constant power

Mode *3

T1&T2

Accuracy



Read-back power

Model

Input voltage

Input current

Input power


Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Ascending/descending slope


Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

*4

0~48A

0.2V/48A

0.1~18V

1mV

±(0.025%+0.05%FS)

0~48A

1mA

±(0.05%+0.1%FS)

0.01

Ω

~

10Ω

IT8816C

0~120V

3000W

0~480A

2V/480A

0.1~120V

10mV

±(0.025%+0.05%FS)

0~480A

10mA

±(0.05%+0.1%FS)

10

Ω

~

7.5KΩ

16bit

0.01%+0.08S *2 0.01%+0.0008S

3000W

100mW

0.2%+0.2%FS

Dynamic mode

CC mode


5uS±100ppm

0.001~0.25A/uS

≒ 100uS

0.01~2.5A/uS *

≒ 100uS

Measuring range

0~18V

1 mV

±(0.025%+0.025%FS)

0~48A

1mA

0~120V

10 mV

±(0.025%+0.025%FS)

0~480A

10mA

±(0.05%+0.1%FS)

3000W

100mW

±(0.2%+0.2%FS)



Technical

Specifications




Overtemperat ure protection

≒ 52.8A

≒ 3050W

≒ 130V

≒ 85 ℃

≒ 528A

Current (CC)


Resistance (CR)


Dimension

Specification

≒ 52.8/48A

0V

≒ 4mΩ

300KΩ

≒ 528/480A

0V

≒ 4mΩ

W439*H133.3*D580 （ mm ）

Rated value

( 0-40 °C)


mode


mode


Constant power

Mode *3

T1&T2

Accuracy

Model

Input voltage

Input current

Input power


Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0.15V/36A 1.5V/360A 0.15V/48A 1.5V/480A

0.1

~18V

1mV

0.1

~120V 0.1

~18V

10mV 1mV

±(0.025%+0.05%FS)

0.1

~120V

10mV

0~36A

1mA

0~360A

10mA

0~48A

1mA

0~480A

10mA

0.01

Ω

~

10Ω

16bit

±(0.05%+0.1%FS)

10

Ω

~

7.5KΩ

0.005

Ω

~

10Ω

16bit

10

Ω

~

7.5KΩ

0.01%+0.08S *2 0.01%+0.0008S 0.01%+0.08S *2 0.01%+0.0008S

4500W 6KW

100mW 100mW

0.2%+0.2%FS

Dynamic mode

CC mode


5uS±100ppm



Read-back Range

0~36A

IT8817

0~120V

4500W

0.001~0.25A/uS

0~360A

0.01~2.5A/uS

≒ 100 uS ≒ 100 uS

Measuring range

0~18V 0~120V


≒

0~48A

0.001~0.25A/uS

120 uS

0~18V

IT8818

0~120V

6KW

0~480A

0.01~2.5A/uS

≒ 120 uS

0~120V

58

Technical

Specifications voltage


Read-back power

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

1 mV

0~36A

1mA

10 mV 1 mV

±(0.025%+0.025%FS)

0~360A

10mA

0~48A

1mA

±(0.05%+0.05%FS)

4500W

100mW

±(0.2%+0.2%FS)


6KW

100mW

≒ 4550W

≒ 6050W

1 0mV

0~480A

10mA




Overtempera ture protection

≒ 39.6A

≒ 130V

≒ 85 ℃

≒ 396A ≒ 52.8A

≒ 130V

≒ 85 ℃

≒ 528A

Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)


≒ 39.6A

Specification

≒ 396A

≒ 4mΩ

300KΩ

0V

≒ 52.8A

≒ 3mΩ

≒ 528A

Dimension


mode


mode


Model

Input voltage

Rated value

( 0-40 °C)

W439*H266*D590 （ mm ）

IT8817B

0~500V

IT8818B

0~500V

Input current

Input power


Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0~12A

0.3V/12A

3.6KW

0~120A

3V/120A

0~15A

0.3V/15A

5KW

0~150A

3V/150A

0.1

~50V

1mV

0.1

~500V 0.1

~50V

10mV 1mV

±(0.025%+0.05%FS)

0.1

~500V

10mV

0~12A

1mA

0.03

Ω

~

10Ω

0~120A 0~15A

10mA 1mA

±(0.05%+0.05%FS)

10

Ω

~

7.5KΩ

0.03

Ω

~

10Ω

0~150A

10mA

10

Ω

~

7.5KΩ

16bit 16bit

0.01%+0.08S *2 0.01%+0.0008S 0.01%+0.08S *2 0.01%+0.0008S


Constant power

Mode *3

Range

Resolution

Accuracy



Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Technical

Specifications

3.6KW

100mW

0.2%+0.2%FS

Dynamic mode

CC mode

20uS~3600S /Res:1uS

5uS±100ppm

5KW

100mW

0.2%+0.2%FS

T1&T2

Accuracy







Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)


Dimension

Model

Input voltage

Rated value

( 0-40 °C)

Constant

Input current

Input power


Range

0.001~0.1A/uS 0.01~1A/uS 0.001~0.1A/uS 0.01~1A/uS

0~50V

1 mV

0~12A

1mA

≒ 80uS

Measuring range

0~500V

10 mV

0~50V

1 mV

±(0.025%+0.025%FS)

0~120A 0~15A

10mA 1mA

±(0.05%+0.05%FS)

≒ 100 uS

0~500V

10 mV

0~150A

10mA

3.6KW

100mW

5KW

100W

±(0.2%+0.2%FS)

≒ 13.2A


≒ 3650W

≒ 132A

≒ 530V

≒ 16.5A

≒ 5050W

≒ 165A

≒ 530V

≒ 85 ℃ ≒ 85 ℃

≒ 13.2A

Specification

≒ 132A ≒ 16.5A ≒ 165A

0V

0~600A

IT8817C

0~120V

0~600A

4500W

0.18V/60A

≒ 25mΩ

W439*H266*D590 （ mm ）

1.8V/600A

0.1

~18V 0.1

~120V


1MΩ

≒ 20mΩ

0~72A

IT8818C

0~120V

0~720A

6KW

0.18V/72A

0.1

~18V

1.8V/720A

0.1

~120V

60

voltage

mode


mode


Constant power

Mode *3

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

T1&T2

Accuracy





Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy





Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)


Dimension

Technical

Specifications

1mV 10mV 1mV

±(0.025%+0.05%FS)

10mV

0~60A

1mA

0~600A

10mA

0~72A

1mA

0~720A

10mA

0.01

Ω

~

10Ω

16bit

±(0.1 %+0.1%FS)

10

Ω

~

7.5KΩ

0.005

Ω

~

10Ω

16bit

10

Ω

~

7.5KΩ

0.01%+0.08S *2 0.01%+0.0008S 0.01%+0.08S *2 0.01%+0.0008S

4500W

100mW

6KW

100mW

0.2%+0.2%FS

Dynamic mode

CC mode

20uS~3600S /Res:1uS

5uS±100ppm

0.2%+0.2%FS

0.001~0.25A/uS 0.01~2.5A/uS 0.001~0.25A/uS 0.01~2.5A/uS

0~18V

1 mV

0~60A

1mA

≒ 200uS

Measuring range

0~120V

10 mV

0~18V

1 mV

±(0.025%+0.025%FS)

0~600A

10mA

0~72A

1mA

±(0.05%+0.1%FS)

0~120V

10mV

0~720A

10mA

4500W

100mW

6KW

100mW

≒ 66A

±(0.2%+0.2%FS)


≒ 4550W

≒ 66A ≒ 79.2A

≒ 6050W

≒ 792A

≒ 130V

≒ 85 ℃

≒ 66A

Specification

≒ 660A ≒ 79.2A ≒ 792A

0V

≒ 3mΩ ≒ 2.5mΩ

300KΩ

W439*H266*D590 （ mm ）


Rated value

( 0-40 °C)


mode


mode


Constant power

Mode *3

Model

Input voltage

Input current

Input power


Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Dynamic mode

T1&T2

Accuracy

Ascending/des cending slope

*4

Technical

Specifications

IT8818D

0~60V

0~70A 0~700A

6KW

0.1V/70A 1V/700A

0.1

~6V

1mV

±(0.05%+0.02%FS)

0.1

~60V

10mV

±(0.05%+0.025%FS)

0~700A 0~70A

1mA

±(0.1%+0.1%FS)

0.005

Ω

~

10Ω

0.01%+0.08S

10mA

±(0.1%+0.1%FS)

10

Ω

~

7.5KΩ

16bit

0.01%+0.0008S

6KW

100mW

0.2%+0.2%FS

Dynamic mode

CC mode


1 uS±100ppm

0.0001~0.6A/uS 0.001~2.5A/uS



Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Measuring range

0~6V

0.1 mV

0~60V

1 mV

±(0.025%+0.025%FS)

0~70A

1mA

±(0.025%+0.025%FS)

±(0.05%+0.05%FS)

6KW

0~700A

10mA

100mW

±(0.2%+0.2%FS)


≒≒ 6KW




Overtempera ture

≒ 77A

≒ 65V

≒ 85 ℃


≒ 770A

62

Technical

Specifications protection

Current (CC)


Resistance (CR)


Dimension

Rated value

( 0-40 °C)

Constant

Model

Input voltage


mode


mode

Input current

Input power


Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

*1

Constant power

Mode *3

Accuracy

Range

Resolution

Accuracy

Range

Read-back voltage Resolution

Accuracy

Range

Read-back current Resolution

Accuracy

Range

Read-back power Resolution

Accuracy



Overvoltage

Specification

≒ 77A

0V

≒ 1mΩ

150KΩ

W439*H266*D590 （ mm ）

≒ 770A

0V

≒ 1mΩ

IT8819H

0~800V

0~8A 0~80A

7500W

0.28V/8A 2.8V/80A

0.1~80V

1mV

±(0.05%+0.05%FS)

0~8A

1mA

±(0.05%+0.05%FS)

0.05

Ω

~

10Ω

0.1~800V

10mV

±(0.05%+0.05%FS)

0~80A

10mA

±(0.05%+0.05%FS)

10

Ω

~

7.5KΩ

16bit

0.01%+0.08S *2 0.01%+0.0008S

7500W

1W

0.2%+0.25%FS

Measuring range

0~80V

1mV

±(0.025%+0.025%FS)

0~8A

0~800V

10mV

±(0.025%+0.025%FS)

0~80A

10mA 1mA

±(0.05%+0.05%FS)

7500W

1W

±(0.2%+0.25%FS)


≒ 7550W

≒ 8.8A

≒

850V


≒ 88A

63

Technical



Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)


Dimension

Rated value

( 0-40 °C)


mode


mode


Constant power

Mode *3

Model

Input voltage

Input current

Input power


Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy



Read-back power

Overpower

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

≒ 85 ℃

Specification

≒

8.8/8A

0V

≒ 35mΩ

≒ 2MΩ

12U

≒

88/80A

0V

≒ 35mΩ

IT8830

0~120V

0~50A 0~500A

10KW

0.1V/50A 1V/500A

0.1

~18V

1mV

±(0.025%+0.05%FS)

0~50A

1mA

±(0.05%+0.1%FS)

0.005

Ω

~

10Ω

0.1

~120V

10mV

±(0.025%+0.05%FS)

0~500A

10mA

±(0.05%+0.1%FS)

10

Ω

~

7.5KΩ

16bit

0.01%+0.08S *2 0.01%+0.0008S

0.2%+0.2%FS

Measuring range

0~18V

1 mV

10KW

1W

±(0.025%+0.025%FS)

0~50A

1mA

0~120V

10 mV

±(0.025%+0.025%FS)

0~500A

10mA

±(0.05%+0.05%FS)

10KW

1W

±(0.2%+0.2%FS)


≒ 10.1KW


Technical





Short circuit

Current (CC)

Voltage (CV)

Resistance

(CR)


Dimension

Model

Input voltage

Rated value

( 0-40 °C)


mode


mode


Constant power

Mode *3

Input current

Input power


Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy



Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

≒ 55A

≒ 130V

≒ 85 ℃

Specification

≒ 55A

0V

≒ 2mΩ

300KΩ

12U

≒ 550A

≒ 550A

0V

≒ 2mΩ

IT8830B

0~500V

0~20A 0~200A

10KW

0.3V/20A 3V/200A

0.1

~50V

1mV

±(0.025%+0.05%FS)

0~20A

1mA

±(0.05%+0.05%FS)

0.02

Ω

~

10Ω

16bit

0.01%+0.08S *2

10KW

1W

0.2%+0.2%FS

0.1

~500V

10mV

±(0.05%+0.05%FS)

0~200A

10mA

±(0.05%+0.05%FS)

10

Ω

~

7.5KΩ

0.01%+0.0008S

Measuring range

0~50V

1mV

±(0.025%+0.025%FS)

0~20A

1mA

±(0.05%+0.05%FS)

10KW

1W

0~500V

10 mV

±(0.025%+0.025%FS)

0~200A

10mA


Technical

Specifications




Overtemperatu re protection

Accuracy

Short circuit

Current (CC)

Voltage (CV)

Resistance

(CR)


Dimension

Model

Input voltage

Rated value

( 0-40 °C)


mode


mode


Constant power

Mode *3

Input current

Input power


Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy



Range

Resolution

Accuracy

Range

Resolution

±(0.2%+0.2%FS)


≒ 10.1KW

≒ 22A

≒ 530V

≒ 85 ℃

Specification

≒ 22A

0V

≒ 15mΩ

1MΩ

12U

≒ 220A

≒ 220A

0V

≒ 15mΩ

IT8830H

0~800V

0~10A 0~100A

10KW

0.3V/10A 3V/100A

0.1~80V

1mV

±(0.05%+0.05%FS)

0~10A

1mA

±(0.05%+0.05%FS)

0.05

Ω

~

10Ω

0.1~800V

10mV

±(0.05%+0.05%FS)

0~100A

10mA

±(0.05%+0.05%FS)

10

Ω

~

7.5KΩ

0~80V

1 mV

±(0.025%+0.025%FS)

0~10A

1mA

16bit

0.01%+0.08S *2

10KW

1W

0.2%+0.2%FS

Measuring range

0.01%+0.0008S

0~800V

10 mV

±(0.025%+0.025%FS)

0~100A

10mA


Technical

Specifications

Read-back power

Accuracy

Range

Resolution

Accuracy

±(0.05%+0.05%FS)

10KW

1W

±(0.2%+0.2%FS)






≒ 11A

≒ 10.1KW

≒ 850V

≒ 85 ℃

≒ 110A

Current (CC)

Specification

≒ 11A ≒ 110A

Short circuit

Voltage (CV)

Resistance

(CR)

0V

≒ 30mΩ

0V

≒ 30mΩ


Dimension

2MΩ

12U

Rated value

( 0-40 °C)


mode


mode


Constant power

Mode *3

Model

Input voltage

Input current

Input power

Range

Resolution

Accuracy

0~75A

IT8831

0~120V

15KW

0~750A

15KW

1W

0.2%+0.2%FS

Measuring range


0~100A

IT8832

0~120V

0~1000A

20KW


0.15V/75A

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

1.5V/750A

0.1~18V

1mV

0.1~120V

10mV

±(0.05%+0.05%FS)

0~75A 0~750A

1mA 10mA

0.15V/100A

0.1~18V

1mV

1.5V/1000A

±(0.05%+0.05%FS)

0~100A

10mA

0.1~120V

10mV

0~1000A

100mA

±(0.1%+0.1%FS)

0.005

Ω

~

10Ω

16bit

10

Ω

~

7.5KΩ

±(0.1%+0.1%FS)

±(0.2%+0.1%F

S)

0.005

Ω

~

10Ω

16bit

10

Ω

~

7.5KΩ

0.01%+0.08S

*2

0.01%+0.0008S 0.01%+0.08S

*2

0.01%+0.0008

S

20KW

1W

0.25%+0.25%FS

67

Technical

Specifications



Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0~18V

1 mV

0~120V

10mV

±(0.025%+0.025%FS)

0~75A 0~750A

1mA 10mA

±(0.1%+0.1%FS)

15KW

1W

±(0.2%+0.2%FS)


0~18V

1 mV

0~120V

1 0mV

±(0.025%+0.025%FS)

0~100A 0~1000A

10mA 100mA

±(0.1%+0.1%FS)

20KW

1W

±(0.2%+0.25%FS)





≒ 82.5A

≒ 15.1KW

≒ 130V

≒ 85 ℃

≒ 825A

≒ 20.1KW

≒ 110A

≒ 130V

≒ 85 ℃

≒ 1100A

Current (CC)


Resistance (CR)


Specification

≒ 82.5A ≒ 825A

0V

≒ 2mΩ

0V

≒ 2mΩ

300KΩ

Dimension

Model

Input voltage

Input current

Rated value

( 0-40 °C)

Input power


Range


mode


mode

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Constant resistance

Resolution mode *1

Accuracy

Constant power

Mode *3

Range

Resolution

27U

0~150A

0.18V/150A

0.1~18V

1mV

±(0.05%+0.05%FS)

0~150A

10mA

±(0.1%+0.1%FS)

0.005

Ω

~

10Ω

0.01%+0.08S *2

≒ 110A

0V

≒ 1.5mΩ

IT8833

0~120V

25KW

16bit

25KW

1W

300KΩ

≒ 1100A

0V

≒ 1.5mΩ

0~1500A

1.8V/1500A

0.1~120V

10mV

±(0.05%+0.05%FS)

0~1500A

100mA

±(0.2%+0.1%FS)

10

Ω

~

7.5KΩ

0.01%+0.0008S


Technical

Specifications



Read-back power

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0.2%+0.2%FS

Measuring range

0~18V

1 mV

±(0.025%+0.025%FS)

0~120V

10mV

±(0.025%+0.025%FS)

0~150A

10mA

0~1500A

100mA

±(0.1%+0.1%FS)

25KW

1W

±(0.2%+0.2%FS)



≒ 25.1KW




≒ 165A

≒ 130V

≒ 85 ℃

Short circuit

Current (CC)

Voltage (CV)

Resistance (CR)


Specification

≒ 165A

0V

≒ 1.2mΩ

300KΩ

Dimension

Rated value

( 0-40 °C)


mode


mode


Model

Input voltage

IT8831B

0~500V

27U

Input current

Input power


Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0~30A

0.25V/30A

15KW

0~300A

2.5V/300A

0.1~50V

1mV

0.1~500V

10mV

±(0.025%+0.05%FS)

0~30A 0~300A

1mA

0.01%+0.08S

*2

10mA

±(0.05%+0.05%FS)

0.01

Ω

~

10Ω

10

Ω

~

7.5KΩ

16bit

0.01%+0.0008S

≒ 1650A

≒ 1650A

0V

≒ 1.2mΩ

0~40A

IT8832B

0~500V

0~400A

20KW

0.25V/40A 2.5V/400A

0.1~50V

1mV

0.1~500V

10mV

±(0.025%+0.05%FS)

0~40A 0~400A

1mA 10mA

±(0.05%+0.1%FS)

0.01

Ω

~10

Ω

10

Ω

~

7.5KΩ

16bit

0.01%+0.08S

*2

0.01%+0.0008

S


Constant power

Mode *3

Range

Resolution

Accuracy



Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

15KW

1W

0.2%+0.2%FS

Measuring range

0~50V 0~500V

1mV 10 mV

±(0.025%+0.025%FS)

0~30A

1mA

0~300A

10mA

±(0.05%+0.05%FS)

15KW

1W

±(0.2%+0.2%FS)


≒ 15.1KW





≒ 33A

≒ 530V

≒ 85 ℃

≒ 330A

Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)


Dimension

Model

Rated value

( 0-40 °C)

Input voltage

Input current

Input power



mode


Range

Resolution

Accuracy

Range

Resolution

≒ 33A

0V

Specification

≒ 330A

0V

≒ 8mΩ ≒ 8mΩ

1MΩ

27U

0~50A

IT8833B

0~500V

0~500A

25KW

0.25V/50A 2.5V/500A

0.1~50V

1mV

0.1~500V

10mV

±(0.025%+0.05%FS)

0~50A 0~500A

1mA 10mA


≒ 44A

Technical

Specifications

20KW

1W

0.2%+0.2%FS

0~50V 0~500V

1mV 10 mV

±(0.025%+0.025%FS)

0~40A

1mA

0~400A

10mA

±(0.05%+0.1%FS)

20KW

1W

±(0.2%+0.2%FS)

≒ 20.1KW

≒ 530V

≒ 85 ℃

≒ 440A

≒ 44A

0V

≒ 6mΩ

1MΩ

≒ 440A

0V

≒ 6mΩ

0~60A

IT8834B

0~500V

0~600A

30KW

0.3V/60A 3V/600A

0.1~50V

1mV

0.1~500V

10mV

±(0.025%+0.05%FS)

0~60A 0~600A

1mA 10mA

70

mode


Constant power

Mode *3

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy



Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy





Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)


Dimension

Rated value

( 0-40 °C)


Model

Input voltage

Input current

Input power


Range

Resolution

Technical

Specifications

±(0.05%+0.1%FS)

0.01

Ω

~

10Ω

10

Ω

~

7.5KΩ

16bit

±(0.1%+0.1%FS)

0.01

Ω

~

10Ω

10

Ω

~

7.5KΩ

16bit

0.01%+0.008S 0.01%+0.0008S 0.01%+0.008S 0.01%+0.0008S

*2 *2

25KW

1W

0.2%+0.2%FS

Measuring range

30KW

1W

0.2%+0.2%FS

0~50V

1mV

0~500V

10 mV

0~50V

1 mV

0~500V

10mV

±(0.025%+0.025%FS)

0~50A 0~500A

1mA 10mA

±(0.05%+0.05%FS)

25KW

1W

±(0.2%+0.2%FS)

≒ 55A


≒ 25.1KW

≒ 550A

≒ 530V

±(0.025%+0.025%FS)

0~60A 0~600A

1mA 10mA

±(0.05%+0.1%FS)

≒

30KW

1W

±(0.2%+0.2%FS)

66A

≒ 30.1KW

≒ 530V

≒ 660A

≒ 85 ℃ ≒ 85 ℃

≒ 55A

0V

Specification

≒ 550A

0V

≒ 66A

0V

≒ 660A

0V

≒ 5mΩ

1MΩ

≒ 5mΩ

27U

0~15A

IT8831H

0~800V

0~150A

15KW

0.3V/15A

0.1~80V

1mV

3V/150A

0.1~800V

10mV

≒ 5mΩ

0~20A

IT8832H

0~800V

20KW

0~200A

0.3V/20A

0.1~80V

1mV

1MΩ

≒ 5mΩ

3V/200A

0.1~800V

10mV


Technical

Specifications

mode


mode


Constant power

Mode *3



Read-back power

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

±(0.05%+0.05%FS)

0~15A 0~150A

1mA 10mA

±(0.05%+0.05%FS)

0.02

Ω

~

10Ω

10

Ω

~

7.5KΩ

16bit

0.01%+0.08S 0.01%+0.0008S

*2

15KW

1W

0.2%+0.2%FS

0~80V

1 mV

Measuring range

0~800V

10 mV

±(0.025%+0.025%FS)

0~15A

1mA

0~150A

10mA

±(0.05%+0.05%FS)

15KW

1W

±(0.2%+0.2%FS)


±(0.05%+0.05%FS)

0~20A 0~200A

1mA 10mA

±(0.05%+0.05%FS)

0.02

Ω

~

10Ω 10Ω

~

7.5KΩ

16bit

0.01%+0.0008S

0.01%+0.08S *2

±(0.2%+0.2%FS)

0~80V

1 mV

20KW

1W

±(0.025%+0.025%FS)

0~20A

1mA

0~800V

10 mV

0~200A

10mA

±(0.05%+0.05%FS)

20KW

1W

±(0.2%+0.2%FS)

≒ 20.1KW

≒ 15.1KW





≒ 16.5A

≒ 850V

≒ 85 ℃

≒ 165A

Current (CC) ≒ 16.5A

Specification

≒ 165A

Short circuit

Voltage (CV)

Resistance

(CR)


Dimension

Rated value

( 0-40 °C)

Model

Input voltage

Input current

Input power

Min. operating

0V

≒ 20mΩ

2MΩ

0V

≒ 20mΩ

27U

IT8833H

0~800V

0~25A 0~250A

25KW

0.3V/25A 3V/250A


≒ 22A

≒ 22A

0V

≒ 15mΩ

≒ 850V

≒ 85 ℃

2MΩ

≒ 220A

≒ 220A

0V

≒ 15mΩ

0~30A

IT8834H

0~800V

0~300A

0.3V/30A

30KW

3V/300A

72

Technical

Specifications


mode


mode


Constant power

Mode *3 voltage

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy



Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy





0.1~80V

1mV

0.1~800V

10mV

±(0.05%+0.05%FS)

0~25A 0~250A

1mA 10mA

0.1~80V

1mV

0.1~800V

10mV

±(0.05%+0.05%FS)

0~30A 0~300A

1mA 10mA

±(0.05%+0.1%FS)

0.02

Ω

~

10Ω

10

Ω

~

7.5KΩ

16bit

0.01%+0.08S

*2

0.01%+0.0008S

±(0.05%+0.1%FS)

0.01

Ω

~

10Ω

10

Ω

~

7.5KΩ

16bit

0.01%+0.08S *2

0.01%+0.0008

S

30KW

1W

0.2%+0.2%FS

25KW

1W

0.2%+0.2%FS

Measuring range

0~80V

1 mV

0~800V

10 mV

±(0.025%+0.025%FS)

0~25A 0~250A

1mA 10mA

±(0.05%+0.05%FS)

25KW

1W

±(0.2%+0.2%FS)


0~80V

1 mV

0~800V

10 mV

±(0.025%+0.025%FS)

0~30A 0~300A

1mA 10mA

±(0.05%+0.05%FS)

30KW

1W

±(0.2%+0.2%FS)

≒ 25.1KW

≒ 30.1KW

≒ 27.5A ≒ 275A ≒ 33A ≒ 330A

≒

≒

850V

85 ℃

≒

≒

850V

85 ℃

Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)


Dimension

≒ 27.5A

Specification

≒ 275A

0V 0V

≒ 12mΩ ≒ 12mΩ

2MΩ

27U


≒ 33A

0V

≒ 10mΩ

2MΩ

≒

≒

330A

0V

10mΩ

73

Technical

Specifications

Model

Input voltage

IT8835B

0~500V

IT8835H

0~800V

Rated value

Input current

Input power

( 0-40 °C)



mode

Range

Resolution

Accuracy

Range


mode

Resolution

Accuracy


Constant power

Mode *3



Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0~70A

0.3V/70A

0.1~50V

1mV

±(0.025%+0.05%FS)

0~70A

1mA

0~50V

1 mV

35KW

1W

0~700A

3V/700A

0.1~500V

10mV

0~700A

10mA

0.2%+0.2%FS

Measuring range

0~500V

10 mV

0~35A

0.3V/35A

0.1~80V

1mV

0~35A

1mA

0~80V

1 mV

35KW

1W

0~350A

3 V/350A

0.1~800V

10mV

±(0.05%+0.05%FS)

0~350A

10mA

±(0.1%+0.1%FS) ±(0.1%+0.1%FS) ±(0.05%+0.1%FS)

±(0.05%+0.1%F

0.01

Ω

~

10Ω

10

Ω

~

7.5KΩ

0.01

Ω

~

10Ω

S)

10

Ω

~

7.5KΩ

16bit 16bit

0.01%+0.08S *2 0.01%+0.0008S 0.01%+0.08S *2 0.01%+0.0008S

35KW 35KW

0.2%+0.2%FS

0~800V

10 mV

0~70A

1mA

±(0.025%+0.025%FS)

0~700A

10mA

±(0.05%+0.1%FS)

0~35A

1mA

0~350A

10mA

±(0.05%+0.05%FS)

35KW

1W

±(0.2%+0.2%FS)

35KW

1W

±(0.2%+0.2%FS)






≒ 77A

≒ 35.1KW

≒

≒

530V

85 ℃

≒ 770A ≒

≒

38.5A

35.1KW

≒

≒

850V

85 ℃

≒ 385A

Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)

Input

≒ 77/70A

≒

0V

4mΩ

1MΩ

Specification

≒ 770/700A

0V

≒ 4mΩ

≒ 38.5/35A

≒

0V

8.5mΩ

2MΩ

≒ 385/350A

≒

0V

8.5mΩ


Technical

Specifications terminal impedance

Dimension

Model

Input voltage

37U

IT8836B

0~500V

37U

IT8836H

0~800V

Rated value

Input current

Input power

( 0-40 °C)


Range Constant voltage

mode

Resolution

Accuracy


mode


Range

Resolution

Accuracy

Range

Resolution

Constant power

Mode *3

Accuracy

Range

Resolution

Accuracy

0~80A

0.3V/80A

0.1~50V

1mV

40KW

0~800A

3V/800A

0.1~500V

10mV

±(0.025%+0.05%FS)

0~40A

0.3V/40A

0.1~80V

1mV

40KW

0~400A

3 V/400A

0.1~800V

10mV

±(0.05%+0.05%FS)

0~80A

1mA

0~800A

10mA

0~40A

1mA

0~400A

10mA

±(0.1%+0.1%FS) ±(0.1%+0.1%FS) ±(0.05%+0.1%FS) ±(0.05%+0.1%FS)

0.01

Ω

~

10Ω

10

Ω

~

7.5KΩ

0.01

Ω

~

10Ω

10

Ω

~

7.5KΩ

16bit 16bit

0.01%+0.08S *2 0.01%+0.0008S 0.01%+0.08S *2 0.01%+0.0008S

40KW 40KW



Read-back power

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0~50V

1 mV

1W

0.2%+0.2%FS

Measuring range

0~500V

10 mV

0~80V

1 mV

±(0.025%+0.025%FS)

1W

0.2%+0.2%FS

0~800V

10 mV

0~80A

1mA

0~800A

10mA

±(0.05%+0.1%FS)

40KW

1W

±(0.2%+0.2%FS)

0~40A

1mA

0~400A

10mA

±(0.05%+0.05%FS)

40KW

1W

±(0.2%+0.2%FS)



≒ 40.1KW ≒ 40.1KW




≒ 88A

≒ 530V

≒ 85 ℃

≒ 880A ≒ 44A

≒ 850V

≒ 85 ℃

≒ 440A

Short circuit Current (CC) ≒ 88/80A

Specification

≒ 880/800A ≒ 44/40A ≒ 440/400A


Technical

Specifications



Read-back power

Voltage (CV)

Resistance

(CR)

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy





0V

≒ 3.5mΩ

≒ 85 ℃

0V

≒ 3.5mΩ

0V

≒ 7.5mΩ

≒ 85 ℃

0V

≒ 7.5mΩ


Dimension

Model

Input voltage

1MΩ

37U

2MΩ

37U

IT8837B

0~500V

IT8837H

0~800V

Rated value

Input current

Input power

( 0-40 °C)



mode

Range

Resolution

Accuracy


mode

Resolution

Accuracy


Constant power

Mode *3

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0~90A

0.3V/90A

45KW

0~900A

3V/900A

0~45A

0.3V/45A

45KW

0~450A

3 V/450A

0.1~50V 0.1~500V

1mV 10mV

±(0.025%+0.05%FS)

0~90A

1mA

0~900A

10mA

±(0.1%+0.1%FS) ±(0.1%+0.1%FS)

0.005

Ω

~

10Ω

10

Ω

~

7.5KΩ

16bit

0.1~80V

1mV

0~45A

1mA

0.1~800V

10mV

±(0.05%+0.05%FS)

0~450A

10mA

±(0.05%+0.1%FS)

0.01

Ω

~

10Ω

10

Ω

~

7.5KΩ

16bit

0.01%+0.08S *2 0.01%+0.0008S 0.01%+0.08S *2 0.01%+0.0008S

45KW 45KW

1W

0.2%+0.2%FS

1W

0.2%+0.2%FS

0~50V

1 mV

Measuring range

0~500V

10 mV

0~80V

1 mV

0~800V

10 mV

0~90A

1mA

±(0.025%+0.025%FS)

0~900A

10mA

±(0.1%+0.1%FS)

0~45A

1mA

0~450A

10mA

±(0.05%+0.05%FS)

45KW

1W

≒

±(0.2%+0.2%FS)

99A


≒ 45.1KW

≒ 990A

≒ 530V

45KW

1W

±(0.2%+0.2%FS)

≒ 45.1KW

≒ 49.5A

≒ 850V

≒ 495A

Specification


Technical

Specifications

Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)

≒ 99/90A

0V

≒ 3mΩ

≒ 990/900A

0V

≒ 3mΩ

≒ 49.5/45A

0V

≒ 6.5mΩ

≒ 495/450A

0V

≒ 6.5mΩ


1MΩ 2MΩ

Dimension 37U 37U


Constant power

Mode *3

Model



Read-back power

Input voltage

Rated value

Input current

Input power

( 0-40 °C)



mode

Range

Resolution

Accuracy


mode

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0~100A

0.3V/100A

0.1~50V

1mV

0~100A

10mA

0~50V

1 mV

IT8838B

0~500V

0~1000A

50KW

1W

3V/1000A

0.1~500V

10mV

±(0.025%+0.05%FS)

0~1000A

100mA

0.2%+0.2%FS

Measuring range

0~500V

10 mV

0~50A

0.3V/50A

0.1~80V

1mV

0~50A

1mA

0~80V

1 mV

IT8838H

0~800V

50KW

1W

0~500A

3 V/500A

0.1~800V

10mV

±(0.05%+0.05%FS)

0~500A

10mA

±(0.1%+0.1%FS) ±(0.2%+0.1%FS) ±(0.05%+0.1%FS) ±(0.05%+0.1%FS)

0.005

Ω

~

10Ω

10

Ω

~

7.5KΩ

0.01

Ω

~

10Ω

10

Ω

~

7.5KΩ

16bit 16bit

0.01%+0.08S

*2

0.01%+0.0008S

50KW

0.01%+0.08S *2 0.01%+0.0008S

50KW

0.2%+0.2%FS

0~800V

10 mV

0~100A

10mA

±(0.025%+0.025%FS)

0~1000A

100mA

±(0.1%+0.1%FS)

0~50A

1mA

0~500A

10mA

±(0.05%+0.1%FS)

50KW

1W

±(0.2%+0.2%FS)

50KW

1W

±(0.2%+0.2%FS)




Overvoltage

≒ 110A

≒ 50.1KW

≒ 530V

≒ 1100A ≒ 55 A

≒ 50.1KW

≒ 850V

≒ 550A


Technical



≒ 85 ℃ ≒ 85 ℃

Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)


Dimension

≒ 110/100A

0V

≒ 3mΩ

1MΩ

42U

Specification

≒ 1100/1000A

0V

≒ 3mΩ

≒ 55/50A

0V

≒ 6mΩ

2MΩ

42U

≒ 550/500A

0V

≒ 6mΩ

Rated value

Input current

Input power

( 0-40 °C)


Range Constant voltage

mode

Resolution

Accuracy


mode


Constant power

Mode *3

Model

Input voltage

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0~110A

0.3V/110A

0.1~50V

IT8839B

0~500V

0~1100A

55KW

3V/1100A

0.1~500V

0~60A

0.3V/60A

0.1~80V

IT8839H

0~800V

55KW

0~600A

3 V/600A

0.1~800V

1mV 10mV

±(0.025%+0.05%FS)

0~110A

10mA

0~1100A

100mA

1mV

±(0.05%+0.1%FS)

0~60A

1mA

10mV

0~600A

10mA

±(0.1%+0.1%FS) ±(0.2%+0.1%FS) ±(0.05%+0.1%FS) ±(0.05%+0.1%FS)

0.005

Ω

~

10Ω

10

Ω

~

7.5KΩ

0.01

Ω

~

10Ω

10

Ω

~

7.5KΩ

16bit 16bit

0.01%+0.08S *2 0.01%+0.0008S 0.01%+0.08S *2 0.01%+0.0008S

55KW 55KW

1W

0.2%+0.2%FS

1W

0.2%+0.2%FS



Read-back power

Overpower

Range

Resolution

Accuracy

Range

Resolution

Accuracy

Range

Resolution

Accuracy

0~50V

1 mV

0~110A

10mA

Measuring range

0~500V

10 mV

0~80V

1 mV

±(0.025%+0.025%FS)

0~1100A

100mA

±(0.1%+0.1%FS)

55KW

0~60A

1mA

0~800V

10 mV

0~600A

10mA

±(0.05%+0.1%FS)

55KW

1W

±(0.2%+0.2%FS)


≒ 55.1KW

1W

±(0.2%+0.2%FS)

≒ 55.1KW


Technical





≒ 121A

≒ 530V

≒ 85 ℃

≒ 1210A ≒ 66A

≒ 850V

≒ 85 ℃

≒ 660A

Current (CC)

Short circuit

Voltage (CV)

Resistance

(CR)


Dimension

≒ 121/110A

0V

≒ 3mΩ

1MΩ

42U

Specification

≒ 1210/1100A

0V

≒ 3mΩ

≒ 66/60A

0V

≒ 5mΩ

2MΩ

42U

≒ 660/600A

0V

≒ 5mΩ

*1.The voltage/current input is no less than 10%FS (FS indicates the full scope).

*2.The scope of read-back resistance is

(1/(1/R+(1/R)*0.01%+0.08),1/(1/R-(1/R)*0.01%-0.08)).

*3.The voltage/current input is no less than 10%FS.

*4.Ascending/descending slope: 10%-90% current ascending slope from 0 to maximum current

*5.Minimum rise time: 10%-90% current rise time

*The above specifications may be subject to change without prior notice.

4.2 Additional features

Memory capacity: 100 groups.

Recommended calibration frequency: 1 time/year.

Cooling method: fan.

Fan control temperature:

Temperature 40°C 50°C 70°C 85°C

Fan status First gear Second gear

Third gear

Temperature protection (OH) and load is shut off.


References

of Load Communication Interfaces

Chapter5 References of Load

Communication Interfaces

IT8800 series electronic load is provided with three communication interfaces to communicate with a computer for selection, including RS232, USB and

GPIB.

5.1 RS232 interface

Cable connection load with both ends of COM interface (DB9) and computer.

Composite key [Shift] + 5 on front board can be used to enter system menu for activation.

In RS-232 interface, all SCPI commands can be used for programming. If

RS-232 interface is selected, in accordance with internal connection of data terminal equipment (DTE) and data communication equipment (DCE) as defined in EIA RS-232, the load is connected to another DTE (e.g., PC COM interface) with direct-connected Modem cable.

NOTE

The rear board of IT8800 series has two COM interfaces. The upper 9-pin COM interface connector is RS232 interface; and the lower 9-pin COM interface is external signal control interface.

RS-232 setting in procedure should be consistent with that in system menu of front board.

Press composite key

[Shift] + 5

to change (if necessary). Send a ^C or ^X character string to the load to pause data transmission. It will clear any uncompleted operation and waive any uncompleted output.

RS-232 data format

RS-232 data comprises start bit, odd and even parity check bit, stop bit and

8-bit data bit. Start bit and stop bit are not editable. However, next odd or even item can be selected by front board [Shift] + 5 . The odd and even items are saved in NVM.

Baud rate

Through front board [Shift] + 5 , the user may select one Baud rate saved in

NVM: 4800 9600 19200 38400 57600 115200

RS-232 Connection

Use RS-232 cable with DB-9 interface because the RS-232 serial port can be connected controller (e.g. PC) serial port. Do not use modulating cable of air-conditioner. Refer to Table 2-2 for plug pin.

If your computer is provided with a RS-232 interface with DB-25 plug, a cable


References

of Load Communication Interfaces and a adapter with DB-25 plug (one end) and DB-9 plug (the other end) are required (not the modulating cable of the air-conditioner).

RS232 Pins of Plug

6

7

8

9

Base pin Description number

1

2

3

4

5

No conjunction

TXD, data transmission

RXD, data receiving

No conjunction

GND, grounding

No conjunction

CTS, clear to send

RTS, request to send

No conjunction

RS-232 troubleshooting:

In case of connection failure of RS-232, perform following check:

 Check if the computer and load are provided with same Baud rate, parity check bit, data bit and flow control. The power shall be configured with one start bit (fixed) and one stop bit (fixed).

 Just as described in the RS-232 connector, correct interface cable or adapter shall be adopted. Note: even if the cable is equipped with right plug, internal wiring may be incorrect.

 The interface cable must be connected to the correct serial port (COM1,

COM2, etc.) of the computer.

Setting of communication

Before communication operation, be sure to match load and PC parameters (as follows).

Baud rate: 9600 (4800/9600/19200/38400/57600/15200). You may enter system menu through the board to set communication Baud rate.

Data bit: 8 bits

Stop bit: 1 bit

Check: (none, even, odd)

EVEN All all 8 data bits have even-parity check

ODD All all 8 data bits have odd-parity check

NONE All all 8 data bits have no check

Local address: (0-31, factory set value: 0)

Start Bit Parity=None 8 Data Bits Stop Bit

5.2 USB Interface

Connect the load and the computer using a cable with two USB interfaces


References

of Load Communication Interfaces

(each end). All functions of the load can be programmed via USB.

The functions of load USB488 interface are as follows:

 The interface is 488.2 USB488 Interface.

 The interface receives requests of REN_CONTROL, GO_TO_LOCAL and

LOCAL_LOCKOUT.

 The interface receives the command MsgID=TRIGGER USBTMC and conveys the TRIGGER command to the functional layer.

The functions of load USB488 device are as follows:

 Capable to read all common SCPI commands.

 SR1 enabled.

 RL1 enabled.

 DT1 enabled.

5.3 GPIB interface

Firstly, connect load GPIB interface and computer GPIB card through IEEE488 bus and ensure sufficient contact. Tighten them with screws. Set address. Load address range: 0-31. Press [Shift] + 5 to enter system menu functions. Press

Left/Right key to find Communication. Select GPIB and set address. Input address and press [Enter] for confirmation. The load works by setting GPIB address on front board. GPIB address is saved in NVM.


Appendix

Appendix

Specifications of Red and Black Test Lines

ITECH provides you with optional red and black test lines, which individual sales and you can select for test. For specifications of ITECH test lines and maximum current values, refer to the table below.

Model

IT-E301/10A

IT-E301/30A

IT-E301/30A

IT-E301/60A

IT-E301/120A

IT-E301/240A

IT-E301/240A

IT-E301/360A

Specification

10A

30A

30A

60A

120A

240A

240A

360A

Cross section

-

6mm

2

6mm

2

20mm

2

50mm

2

70mm

2

70mm

2

95mm

2

For maximum current of AWG copper wire, refer to table blow.

2m

1m

2m

2m

Length

1m

1.2m

2m

1.5m

AWG

The

Maximum current value( A)

10

40

12 14

25 20

16

13

18

10

20 22

7 5

24 26 28

3.5 2.5 1.7

Note: AWG ( American Wire Gage), it means X wire ( marked on the wire). The table above lists current capacity of single wire at working temperature of 30°C.

For reference only.


Contact Us

Thanks for purchasing ITECH products. In case of any doubts, please contact us as follows:

1. Refer to accompanying data disk and relevant manual.

2. Visit ITECH website: www.itechate.com.

3. Select the most convenient contact method for further information.

Via Acquanera, 29 22100 Como tel. 031.526.566 (r.a.) fax 031.507.984

[email protected] www.calpower.it

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