Bender IRDH275

T M

IRDH275

Installation Bulletin / Reference Guide

This document is intended as a reference guide for installing and using a BENDER IRDH275 ground fault detector. This document includes installation, setup, and usage instructions. For complete details, including installation, setup, settings, and troubleshooting, refer to the IRDH275 user manual, document number TGH1361en. This document is intended as a supplement and not a replacement to the complete user manual.

Only qualified maintenance personnel shall operate or service this equipment. These instructions should not be viewed as sufficient for those who are not otherwise qualified to operate or service this equipment. This document is intended to provide accurate information only. No responsibility is assumed by BENDER for any consequences arising from use of this document.

Installation

Mounting

The IRDH275 is a DIN-rail mounted device. See reverse side for dimensions.

Wiring - General

See figure 1 for basic wiring schematic. Line connections

(L1 and L2) may use the schematic below for systems below 793 VAC or 650 VDC. For higher voltages, a voltage coupler is required. See section “Wiring - Voltage Couplers” on additional requirements for wiring into system connection terminals. Use minimum AWG 24, maximum

AWG 12 wire. For more information, refer to the IRDH275 user manual.

! DANGER

HAZARD OF ELECTRIC SHOCK,

EXPLOSION, OR ARC FLASH

• Disconnect all power before servicing.

• Observe all local, state, and national

codes, standards, and regulations.

Wiring - Voltage Couplers

System voltages greater than 793 VAC / 650 VDC require an additional voltage coupler, installed inline between the IRDH275 and the system. Figures 2 through 4 show wiring schematics for the various available voltage couplers. Locate the wiring diagram utilizing the correct voltage coupler.

Wiring - IRDH275 and AGH150W-4

The AGH150W-4 is used on DC systems up to 1600 V. Use figure 2 below for wiring. Ensure that the menu option ISO ADVANCED > AGH is set to “150.” See reverse side for more information.

2

3Ø AC system, w/o N

3

3Ø AC system, with N

1

4

1Ø AC system

5

DC system

6

1. External supply voltage; 6A fuse recommended for internal device protection

2. Conn. 3Ø AC system without neutral

3. Conn. 3Ø AC system with neutral

4. Conn. 1Ø AC system

5. Conn. DC system

6. Equipment ground connection

7. External TEST terminal, N/O contact

8. External RESET terminal, N/O contact

9. STANDBY terminals: Closing F1/F2 will stop measurements

10. Analog outputs: 0... 400 μA on standard version, 0/4... 20 mA on “B” version

11. RS-485 interface

12. Alarm relay K1: SPDT contact

13. Alarm relay K2: SPDT contact

7 8 9 10 11 12 13

Figure 1 - IRDH275 wiring diagram with no voltage coupler

Figure 2 - IRDH275 system wiring diagram when using AGH150W-4

Wiring - IRDH275 and AGH204S-4

The AGH150W-4 is used on AC systems up 1650 V. Use figure 3 below for wiring. Ensure that the menu option ISO ADVANCED > AGH is set to “204.” See reverse side for more information.

Wiring - Contacts

Using a normally closed or normally open contact utilizes two factors: wiring out of the proper terminal, and setting the respective contact to normally energized or deenergized operation.

Refer to the chart below for relay conditions. Changing the energized state of the contact is done via the ISO SETUP > K1 and ISO SETUP > K2 options found in the main menu.

The factory default for relays K1 and K2 is normally deenergized operation.

Device Relay Conditions

Relay Operation Setting Device Alarm State

Normally deenergized mode (N/D)

Non-failsafe mode

“N/O” in device settings menu

Energized in the alarm state

Relay will switch when the alarm is activated.

Normally energized mode (N/E)

Failsafe mode

“N/C” in device settings menu

Energized in the normal state

Relay will switch when the alarm is activated, or when supply voltage to the device is lost.

Power ON, normal state (no alarms)

Power OFF

Power ON, alarm state

Power ON, normal state (no alarms)

Power OFF

Power ON, alarm state

K1 STATE

11-12 CLOSED

11-14 OPEN

11-12 CLOSED

11-14 OPEN

11-12 OPEN

11-14 CLOSED

11-12 OPEN

11-14 CLOSED

11-12 CLOSED

11-14 OPEN

11-12 CLOSED

11-14 OPEN

K2 STATE

21-22 CLOSED

21-24 OPEN

21-22 CLOSED

21-24 OPEN

21-22 OPEN

21-24 CLOSED

21-22 OPEN

21-24 CLOSED

21-22 CLOSED

21-24 OPEN

21-22 CLOSED

21-24 OPEN

Figure 3 - IRDH275 system wiring diagram when using AGH204S-4

Wiring - IRDH275 and AGH520S

The AGH520S is used on AC systems up to 7200 V. Use figure 4 below for wiring. For systems without neutral, connect to L1. Otherwise, connect to the neutral. Ensure that the menu option ISO ADVANCED > AGH is set to “520S.” See reverse side for more information.

Conn. for system w/o N

Conn. for system w/ N

Figure 4 - IRDH275 system wiring diagram when using AGH520S

Bender Inc. • USA: 800.356.4266 / 610.383.9200 / [email protected] • Canada: 800.243.2438 / 905.602.9990 / [email protected] • www.bender.org

Document NAE1018020 • 10.2012 • © Bender Inc. • Page 1/1 • Side 1/2

T M

IRDH275

Installation Bulletin / Reference Guide

Menu Structure Flow Chart

Figure 5 shows the structure of the menu built into the IRDH275. The menu is used for viewing alarms, viewing the status of the system, and making any necessary settings changes.

Use the supplied gray boxes to take note of applied settings for future reference.

Front Panel Display

Menu or settings option

Settings option essential for proper operation

Settings option only available with IRDH275B

1. EXIT

2. HISTORY INFO

3. ISO SETUP

4. ISO ADVANCED

1. Exit

2.Alarm1

3. Alarm2

4. K1

5. K2

Memory

7. M+/M-

1. Exit

2.AGH

3. Ce max

4. Measure

6. Clock

7. Date

8. Test

1 kΩ... 10 MΩ

1 kΩ... 10 MΩ

N/O-T N/C-T

N/C N/O Flash

N/O-T N/C-T

N/C N/O Flash on off

0-20 mA

4-20 mA

1 2 3 4 5 6 7

1. INFO / ESC key: Displays system information / goes back a step in menu

2. TEST / UP key: Initiates self-test / moves up in menu

3. RESET / DOWN key: Resets device when latching mode is active / moves down in menu

4. MENU / ENTER key: Opens the main menu / confirms changes in menu

5. LED “ALARM 1”: Illuminates when alarm

1 is active.

6. LED “ALARM 2”: Illuminates when alarm

2 is active.

7. LED “ERROR”: Illuminates when a device error has occured.

Analog Outputs

Standard IRDH275 models feature a 0 - 400 μA analog output based on the measured insulation resistance. IRDH275B models feature a 0 - 20 mA or 4 - 20 mA output, selectable in the main menu under ISO SETUP > M+/M-. For integrating the analog outputs into control systems, refer to the equations below for the type of analog output being used.

no 150 204 520S

150 500

AMP DC

24 no 01

00:00 dd.mm.yy

00:00 ... 23:00

0 - 400 μA output

0 - 20 mA output

R

F

I

Insulation resistance in kΩ

Current output in μA

5. COM SETUP

6. PASSWORD

7. LANGUAGE

1. Exit

2. Addr.

3. ISONet

4. ISO Monitor

1. Exit

2. Password

3. Status

1. Exit

2. Text

1 ... 30 on off

1 ... 30

000 ... 999 on off

English Deutsch

4 - 20 mA output

Ordering Information

R

F

I

R

F

I

Insulation resistance in kΩ

Current output in mA

Insulation resistance in kΩ

Current output in mA

8. SERVICE

I R D H 2 7 5

1

B W

1

4 3 5

2

Figure 5 - IRDH275 menu flow chart

Technical Data

Refer to IRDH275 series user manual (document TGH1361en) or IRDH275 series datasheet

(document NAE1012020) for detailed technical information.

Dimensions

Dimensions in inches (mm).

Code 1: Optional features

Modifier

Nothing

"B"

"W"

"BW"

4.1”

(105)

4.1”

(105) Ø 0.18”

(4.5)

4.4” (112.5)

Additional features

Standard device

Real-time clock with history memory, 0(4) - 20 mA output

Additional vibration protection, greater temperature range

Both features of the "B" and "W" above

Code 2: Auxiliary supply voltage

Modifier

"435"

"425"

"427"

Supply voltage U

S

(absolute values)

DC 77…286 V / AC 42…460 Hz 88…264 V

DC 10.2…36 V

DC 19.2…72 V

Figure 3 - IRDH275 dimensions in inches (mm)

Bender Inc. • USA: 800.356.4266 / 610.383.9200 / [email protected] • Canada: 800.243.2438 / 905.602.9990 / [email protected] • www.bender.org

Document NAE1018020 • 10.2012 • © Bender Inc. • Page 1/1 • Side 2/2