Woodward WIC1-1 manual

WIC1 – CT Powered Time Overcurrent

And Earth Current Relay

Manual WIC1 (Revision D)

Woodward Manual WIC1 GB

Woodward Governor Company reserves the right to update any portion of this publication at any time. Information provided by Woodward Governor Company is believed to be correct and reliable. However, no responsibility is assumed by Woodward Governor Company unless otherwise expressly undertaken.

© Woodward 1994-2008

2 DOK-TD-WIC1 Rev.C

Manual WIC1 GB Woodward

Contents

1.

Comments on the manual ........................................................................... 5

1.1

1.2

Information Concerning Liability and Warranty ................................................................... 5

IMPORTANT DEFINITIONS ............................................................................................... 6

1.3

Electrostatic Discharge Awareness..................................................................................... 7

2.

Introduction .................................................................................................. 8

2.1

2.2

2.3

How to use this instruction .................................................................................................. 8

Introductory remarks on the WIC1 ...................................................................................... 8

Product description ............................................................................................................. 9

3.

Handling, Installation and Outside Dimensions ...................................... 10

3.1

3.1.1

General information ........................................................................................................... 10

Upkeep of the relay ....................................................................................................... 10

3.2

3.3

3.1.2

3.1.3

3.4

Storage .......................................................................................................................... 10

Electrostatic discharge .................................................................................................. 10

Installation of the relay ...................................................................................................... 10

Outside dimensions ........................................................................................................... 11

Connection Diagram ......................................................................................................... 11

4.

Operating instructions ............................................................................... 12

4.1

General information on the WIC1 ...................................................................................... 12

4.2

4.2.1

4.2.2

User interface .................................................................................................................... 13

WIC1-1/WIC1-4 ............................................................................................................. 13

WIC1-2 .......................................................................................................................... 14

4.2.3

4.3

WIC1-3 .......................................................................................................................... 16

CTs for the WIC1 .............................................................................................................. 17

5.

Technical Data, Characteristics and Features ......................................... 18

5.1

5.1.1

5.2

5.3

5.4

5.5

5.1.2

5.1.3

Default Settings ................................................................................................................. 21

Routine safety check ......................................................................................................... 22

5.5.1

5.5.2

5.5.3

5.6

Protective functions ........................................................................................................... 18

Minimal operating current and rated primary current .................................................... 18

Phase time over current protection ............................................................................... 19

Earth current protection ................................................................................................. 21

Fault value memory ........................................................................................................... 22

Communication ................................................................................................................. 23

Communication via PC adapter .................................................................................... 23

WIC1PC2 adapter ......................................................................................................... 23

WIC1PC3 Adapter ......................................................................................................... 23

Inputs and outputs ............................................................................................................. 24

5.6.1

5.6.2

5.6.3

5.6.4

5.6.5

5.7

5.7.1

5.7.2

5.7.3

5.7.4

5.7.5

5.7.6

Remote trip input ........................................................................................................... 24

Impulse output for the tripping coil ................................................................................ 24

Earthing ......................................................................................................................... 24

Impulse output for the relay ........................................................................................... 24

Measuring inputs for the CTs ........................................................................................ 25

Technical Data .................................................................................................................. 26

Common Data ............................................................................................................... 26

Temperature Range ...................................................................................................... 26

Accuracy ........................................................................................................................ 26

Insulation voltage withstand .......................................................................................... 27

EMC .............................................................................................................................. 27

Ambient conditions ........................................................................................................ 28

5.7.7

5.8

5.8.1

5.8.2

Outside dimension of CTs ............................................................................................. 29

Characteristics and times .................................................................................................. 31

Characteristic curves ..................................................................................................... 31

Calculation formula for IMT characteristics ................................................................... 35

5.8.3

5.9

5.10

5.11

Flag Indicators ............................................................................................................... 36

Description of application .................................................................................................. 37

Foreword ........................................................................................................................... 37

Selection of the CT transformation voltage ratio ............................................................... 38

5.12

Adjustment instruction for inverse characteristic ............................................................... 39

DOK-TD-WIC1 Rev.C 3


6.

Commissioning and Maintenance ............................................................ 41

6.1.1

6.2

6.3

6.4

6.5

Important note ............................................................................................................... 41

Accessories for commissioning work ................................................................................ 41

Criteria to be taken into account for protection devices fed by CT’s .............................. 41

Special features for the WIC1 test .................................................................................... 42

6.6

Selection of the secondary test system ............................................................................ 42

6.6.1

6.6.2

6.7

Checks during commissioning .......................................................................................... 42

Wiring checks ............................................................................................................... 42

WIC1 adjustment .......................................................................................................... 43

Functional Test ................................................................................................................. 43

6.7.1

6.7.2

6.7.3

6.8

Test Currents ................................................................................................................ 44

Switching points for the overcurrent steps .................................................................... 44

Switching points for the short-circuit step ..................................................................... 45

6.8.1

6.9

Special features for earth current tests ............................................................................. 46

6.10

6.10.1

Switching points for the earth current step ................................................................... 46

Test procedure by way of example ................................................................................... 47

Maintenance ..................................................................................................................... 49

6.10.2

Faults ........................................................................................................................ 49

Repair work ............................................................................................................... 49

7.

Product Specific Features ......................................................................... 50

7.1

7.1.1

7.2

Assignment of terminals ................................................................................................... 50

Earthing ......................................................................................................................... 50

Current transformer .......................................................................................................... 51

8.

Annex .......................................................................................................... 52

8.1

8.2

8.3

8.4

Dimensional drawing relay ................................................................................................ 52

Dimensional drawing flag indicator ................................................................................... 52

Order form......................................................................................................................... 53

Commissioning form ......................................................................................................... 54



1. Comments on the manual

This manual explains in general the tasks of device planning, parameter setting, installation, commissioning, operation and maintenance of the WIC1 device.

The manual serves as working basis for:

•

•

Engineers in the protection field, commissioning engineers,

• people dealing with setting, testing and maintenance of protection and control devices,

• as well as trained personnel for electrical installations and power stations.

All functions concerning the type code will be defined. Should there be a description of any functions, parameters or inputs/outputs which do not apply to the device in use, please ignore that information.

All details and references are explained to the best of our knowledge and are based on our experience and observations.

This manual describes the (optionally) full featured versions of the devices.

All technical information and data included in this manual reflect their state at the time this document was issued. We reserve the right to carry out technical modifications in line with further development without changing this manual and without previous notice. Hence no claim can be brought based on the information and descriptions this manual includes.

Text, graphic and formulae do not always apply to the actual delivery scope. The drawings and graphics are not true to scale. We do not accept any liability for damage and operational failures caused by operating errors or disregarding the directions of this manual.

No part of this manual is allowed to be reproduced or passed on to others in any form, unless

Woodward Kempen GmbH have approved in writing.

This user manual is part of the delivery scope when purchasing the device. In case the device is passed on (sold) to a third party, the manual has to be handed over as well.

Any repair work carried out on the device requires skilled and competent personnel who need to be well aware especially of the local safety regulations and have the necessary experience for working on electronic protection devices and power installations (provided by evidence).

Woodward Kempen GmbH does not accept any liability for damage resulting from conversions or changes carried out on the device or planning (projecting) work, parameter setting or adjustment changes done by the customer.

The warranty expires after a device has been opened by others than Woodward Kempen specialists.

Warranty and liability conditions stated in Woodward Kempen GmbH General Terms and Conditions are not supplemented by the above mentioned explanations.



The signal definitions shown below serve the safety of life and limb as well as for the appropriate operating life of the device.

DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION, used with the safety alert symbol, indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

NOTICE is used to address practices not related to personal injury.

CAUTION, without the safety alert symbol, is used to address practices not related to personal injury.



1.3 Electrostatic Discharge Awareness

All electronic equipment is electro static-sensitive, some components more than others. To protect these components from electro static damage, you must take special precautions to minimize or eliminate electrostatic discharges.

Follow these precautions when working with or near the control.

1. Before doing maintenance on the electronic control, discharge the static electricity on your body to ground by touching and holding a grounded metal object (pipes, cabinets, equipment, etc.).

2. Avoid the build-up of static electricity on your body by not wearing clothing made of synthetic materials. Wear cotton or cotton-blend materials as much as possible because these do not store static electric charges as much as synthetics.

3. Keep plastic, vinyl, and Styrofoam materials (such as plastic or

Styrofoam cups, cup holders, cigarette packages, cellophane wrappers, vinyl books or folders, plastic bottles, and plastic ash trays) away from the control, the modules, and the work area as much as possible.

4. Do not remove any printed circuit board (PCB) from the control cabinet unless absolutely necessary. If you must remove the PCB from the control cabinet, follow these precautions:

Do not touch any part of the PCB except the edges.



Do not touch the electrical conductors, the connectors, or the components with conductive devices or with your hands.



When replacing a PCB, keep the new PCB in the plastic antistatic protective bag it comes in until you are ready to install it.

Immediately after removing the old PCB from the control cabinet, place it in the antistatic protective bag.

To prevent damage to electronic components caused by improper handling, read and observe the precautions in Woodward manual 82715,

Guide for Handling and Protection of Electronic Controls, Printed Circuit

Boards, and Modules.

Woodward Kempen GmbH reserves the right to update any portion of this publication at any time. Information provided by Woodward Kempen GmbH is believed to be correct and reliable. However, no responsibility is assumed by Woodward Kempen GmbH unless otherwise expressly undertaken.

© Woodward Kempen GmbH 2010 All Rights Reserved


8


2. Introduction

Woodward protection relays of the WI-LINE are offering time over current protective functions and earth fault protective functions in the well-proven technique for CT powered protection relays. As combination of a compact protection relay and related core-type transformer, the WIC1 system was especially developed for compact MV switchboards with circuit breakers.

2.1 How to use this instruction

In this instruction the technical description of all WIC1 versions is included. The user is given a comprehensive insight into the various applications, the selection, installation, setting of parameters and putting into operation of the WIC1.

This instruction is divided into the following sections:

Chapter 1; Introduction

Chapter 2; Handling, installation and outside dimensions

Chapter 3; Operating instructions

Chapter 4; Technical data, characteristics and features

Chapter 5; Commissioning and maintenance

Chapter 6;

Chapter 7;

Product specific features

Annex; Dimensional drawing and flag indicator, Order form and commissioning form

OUT-OF-DATE PUBLICATION

This publication may have been revised or updated since this copy was produced. To verify that you have the latest revision, be sure to check the Woodward documentation website: http://eps.woodward.com/download

The latest version of most publications is available at: http://eps.woodward.com/download

If your publication is not there, please contact your customer service representative to get the latest copy.

2.2 Introductory remarks on the WIC1

The requirements on MS distribution stations with circuit breakers call for a robust protection relay which is optimized accordingly and an integral part of the respective switchboard. The WIC1 is a time over current relay Woodward has developed specifically for such requirements.

The WIC1 is a CT-powered protection relay with minimal space requirement which complies with the highest demands on a digital protection device. Simple but safe wiring, high electromagnetic interference immunity, uncomplicated adjustment and the ability to scale to different power quantities of the switchboard, helping the switchgear manufacturer to minimize costs. By developing the

WIC1 we are also able to present a protective system with a guaranteed maintenance-free period of 25 years, the same as for the switchboard.

DOK-TD-WIC1 Rev.C




The WIC1 is a CT-powered protection relay with inverse time and definite time protection characteristics and is specifically designed for switchboards with CBs and small rated output currents.

Together the specific CTs and the WIC1 form a joint protective system. A low-energy coil is needed for realising trip of the CB.

Parameter setting can be done in different user-friendly ways. By means of casting all electronic components incl. the housing are safely protected against climatic and mechanic influences.

In the WIC1 the following protection functions are realized:

 3 phase definite time over current and short-circuit protection with variable tripping times

50/51)

 3 phase over current protection with selectable inverse time characteristics and definite time short-circuit current element (ANSI 50/51) definite time earth over current protection by internal calculation (ANSI 50N/51N)



3. Handling, Installation and Outside Dimensions

3.1.1 Upkeep of the relay

As a rule protection relays are of robust construction and the WIC1 in particular allows operation under extreme environmental conditions. But despite these facts, the WIC1 should be handled with the necessary care during installation and commissioning. Immediately after receipt of the relay it should be checked for possible damage inflicted during transportation. Any transport damage has to be notified to the transport firm handling the consignment.

Those relays which are not installed immediately should be stored in their original package

(styrofoam).

3.1.2 Storage

If the relay is not used directly it has to be stored in its original packing. Permissible temperatures during storing are -40°C up to +85°C. The storage place should be dry.

The electronic components used in the relay react very sensitive to electrostatic discharge but they are absolute safely placed inside the plastic housing. Additionally all electronic components are well protected by means of casting. Hence it is practical impossible that components are damaged by ESD.

There are no setting or calibrating appliances inside the housing, which would call for opening the device by the user. The housing is hermetically sealed and cannot be opened without causing damage.

3.2 Installation of the relay

By using the three 7mm drill holes, the relay is directly mounted onto the mounting plate. Detailed drawing with all measurements can be found under 8.1.


Manual WIC1 GB

All WIC1 types are of standardized design.

700g

Dimensions: (Width x Height x Depth) 125x170x40mm

L1 L2 L3

Schauzeichen

Flag indicator

Energiearme / low energy

Auslösespule / tripping il

Eingang Fernauslöser input remote trip

~

Figure 3.1: Connection diagram

1

2

3 gn/ge

1

2

3 gn/ge

1

2

3 gn/ge

FI+

FI-

TC+

TC-

S2

C

D

S1

S2

C

D

S1

S2

C

D

S1

230V

115V

N

PE

WIC1 orange 0,25mm² orange 0,25mm² violett 0,25mm² violet 0,25mm²

FI+

Reset braun 0,25mm² brown 0,25mm²

Figure 3.2: Connection diagram WI-SZ5 flag indicator

FI-


Woodward

11


4. Operating instructions

4.1 General information on the WIC1

All available versions of the WIC1 relay are a high-tech and cost-optimized protection for MV switchboards. Specifically in compact switchboards, the WIC1 protection system in combination with a circuit breaker can replace the combination of load-break-switch with HV fuses. Thereby in particular the overload protection for the attached unit is improved clearly.

When power distribution networks are extended more and more high powered transformers are used and here HV fuses are inadmissible. For such applications the WIC1 protection system is an optimal replacement.

All WIC1 versions are provided with three analogue measuring inputs (3x phase current). The current measuring inputs are specially adjusted to the CTs allocated to the WIC1 protection system.

There are 4 different CT ratios available for the protection system WIC1 which are conditional on the rated system current. The successive development towards the application time over current protection makes the system very user friendly. Setting of parameters as well as reading of tripping values is done via the integrated interface. For this the user has one PC adapter and the software

“WIC-Soft1” at hand. The software is available in two versions, i.e. for installation on a WINDOWS

PC and also for standard Palm Top Computers.

As an alternative to the adjustment via interface it is also possible to do this by means of DIP switches (for relay version WIC1-2) or by HEX switches (for relay version WIC1-3).

Cumulative current formation for earth current detection is programmed in the relay. The earth current is calculated from the three phase currents.

The WIC1 is provided with an input for remote tripping to which 115 VAC or 230 VAC can be connected. Tripping is realized via the electric impulse output after max. 1s.

A mechanical flag indicator WI1-SZ4 can be installed for optical signaling occurrence of trip conditions.

Furthermore it is possible to signal a trip event potentially free via the flag indicator WI1-SZ5. For this purpose the flag indicator is equipped with two changeover contacts.

For versions WIC1-2/-3 activation of the relay is signaled by a LED which is above the switches and protected by the clear plastic cover.

In order to simplify protective tests, the WIC1 has test sockets for connection of measuring lines of a three-phase testing device which are used for feeding the CT test winding. Through this the entire protection system (CTs, protection devices, tripping coil) incl. the wiring can be tested.



4.2.1 WIC1-1/WIC1-4

Pursuant to the intended maintenance-free design and for reducing cost there is no user interface with LED indicators and display. The setting values of the protective functions can be recorded directly at the protection relay.

For the basic version WIC1-1 the adjustment of protective functions can only be done via the communication interface which is placed above the terminal blocks at the left of the device.

The adjustment can take place by means of PC. For the short-circuit element here a separate password is needed. Factory setting this is “SEG”.

Figure 4.1: WIC1-1



When compared to WIC1-1, the WIC1-4 provides an additional operator interface at its front panel.

Position and function are the same as for all other unit versions.


Note!

For the operating software “WIC-Soft1” a separate description is available.

4.2.2 WIC1-2

For the relay version WIC1-2 the adjustment of protective functions can be done via DIP switches; there are 4 DIP switches for binary coded setting of one protective parameter.

Because there are only 16 steps available for setting the individual protective parameters, scaling is more coarse than this is the case with parameter setting via software.

For the relay version WIC1-2 setting of parameters via interface is not possible any more, but it is possible to read-out the stored fault values as well as the setting values of the WIC1.



The interface for this version can be found at the left of the relay and additionally above the DIP switch block.

Switch block; Switch No. Setting parameter

1; 1-4

1; 5-8

I

S

: Rated CT current

Choice of characteristics

2; 1-4 I>: Pick-up value of the definite time over current element or start value of the inverse time characteristic.

2; 5–8

3; 1-4 t

I>

: Tripping time of the definite time over current element or factor

“a” of the inverse time characteristic

I>>: Pick-up value of the short-circuit element

3; 5-8

4; 1-4

4; 5-8 t

I>>

I

E> t

IE>

: Tripping time of the short-circuit element

: Pick-up value of the definite time earth over current element

: Tripping time of the definite time earth over current element.

If there is no earth fault function, the DIP switch block 4 is not incorporated.




4.2.3 WIC1-3

For the relay version WIC1-3 the adjustment of protective functions can be done via HEX switches at the protection relay.

Because there are only 16 steps available for setting the individual protective parameters, scaling is more coarse than this is the case with parameter setting via software.

For the relay version WIC1-3 setting of parameters via interface is not possible any more, but it is possible to read-out the stored fault values as well as the setting values of the WIC1.

The interface for this version can be found at the left of the relay and additionally above the HEX switch block.

The following parameters can be set for the relay version with integrated earth fault protection function.

1 I

S

2

: Rated CT current

Choice of characteristics

3 I>: Pick-up value of the definite time over current element or start value of the inverse time characteristic

4 t

I>

: Tripping time of the definite time over current element or time factor “a” of the inverse time characteristic

5 I>>: Pick-up value of the short-circuit element

6 t

I>>

7 I

E>

8 t

IE>

: Tripping time of the short-circuit element

: Pick-up value of the definite time earth over current element

: Tripping time of the definite time earth over current element

If there is no earth fault function, the HEX switches 7 and 8 are not incorporated.




4.3 CTs for the WIC1

There are five different wide-range CTs for the protection system WIC1. Dependent on the rated primary power and voltage of the system, the following CTs can be offered:

CT Type

WIC1-WE1

Rated CT current IS

8 – 28 A

WIC1-W1

WIC1-WE2

WIC1-W2

WIC1-W3

8 – 28 A

16 – 56 A

16 – 56 A

32 – 112 A

WIC1-W4

WIC1-W5

64 – 224 A

128 – 448 A

WIC1-W6 256 – 896 A

The protection relay can be set to the respective operating current of the switchboard by parameter

Is. Reference on the calculation of the protective setting values resulting from this is made in chapter “Description of Application”.

Current transformer WIC1-WE1, WIC1-WE2

In case of small values of the primary currents the user can choose for two current transformers with equal ratings but different characteristics of transmission: WE1 or W1 and WE2 or W2.

It is typical reaction of self-powered protection relays such as WIC1 that there will be a non-linear transmission characteristic of the relay in case of small primary currents. This will effect on the accuracy of the whole system if the current transformer is a W1 or W2 type and primary current values are less then 20 A.

Generally less accuracy will be accepted for phase current protection so that the CT W1 and CT

W2 represents an inexpensive solution.

If there will be required a higher accuracy or in case of an active earth current protection element it is re-commended to use a WE1/WE2 mixed core type CT based on MU metal. In the lower operation range this CT type is more precise than the ordinary W2 type.



5. Technical Data, Characteristics and Features

5.1.1 Minimal operating current and rated primary current

In order to operate reliably, the WIC1 – as all CT-powered protection relays – needs a minimal current flowing constantly in one of the phases. This minimal current is the smallest rated CT current

(IS) x 0.9 listed in table.

The real rated current of the operating component to be protected is adjusted by parameter IS . All further settings at the protection relay refer to the adjusted IS. This is to be described in the following example;

Boundary condition:

Setting IS = 40 A, CT type W3, 32 to 112 A

Setting I>: 1.1 x IS = 1.1 x 40 A = 44 A

Setting I>>: 10 x IS = 10 x 40 A = 400 A

Setting IE>: 0.2 x IS = 0.2 x 40 A = 8 A

Depending on the CT type, an adjustment for relay version WIC1-1 is possible in the following scaling:

CT Type

WIC1-WE1

WIC1-W1

WIC1-WE2

WIC1-W2

WIC1-W3

WIC1-W4

WIC1-W5

WIC1-W6

Rated CT current Step

8 – 28 A

8 – 28 A

16 – 56 A

16 – 56 A

32 – 112 A

64 – 224 A

128 – 448 A

256 – 896 A

0.1 A

0.1A

0.2 A

0.2 A

0.4 A

0.8 A

1.6 A

3.2 A only for setting via serial interface

For relay versions WIC1-2 and WIC1-3 the following rated CT currents are adjustable either by DIP switches 1-4 (switch block 1) or HEX switch 1:

DIP 1-1

DIP 1-2

DIP 1-3

DIP 1-4

OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF ON ON

OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF ON ON ON ON

OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON

HEX 1

WIC1-W1

WIC1-W2

WIC1-W3

WIC1-W4

WIC1-W5

WIC1-W6

8 9 10 11 12 13 14

16 18 20 22 24 26 28 30 32

32 36 40 44 48 52 56 60 64

64 72 80 88 96 104 112

15

120

16 17 18 20 22 24 26 28

128 136 144 160 176 192 208 224

128 240 256

256 480 512

* All values are primary values in Ampere

Table 5.1



5.1.2 Phase time over current protection

The following setting ranges and gradings apply for the WIC1-1. Here the parameters can only be set via a serial interface.

Current

Threshold values I> 0.9 to 2.5 x IS in steps of 0.05 x I

when via

I>> 1 to 20 x IS in steps of 0.1 x I

S

S interface

when via interface

Tripping time for the definite time over current element tI> 0.04s to 300s in the following steps when adjusting via interface

0.04s 0.01

1s - 5s in 0.1s steps

5s - 20s in 0.5s steps

20s - 100s in 2s steps

100s - 300s in 5s steps

IMT characteristics*: Normal Inverse (N-INV)

Very

Inverse

Long

RI-Inverse (RI-INV)

Fuse

Time factor

Tripping times for the definite

Fuse characteristic of a full range fuse (FR-Fuse)

0.05 to 10 in steps of 0.05 when adjusting via interface time short-circuit element face

0.04s

tI>> 0.04s to 3s in the following steps when adjusting via intersteps

1s - 3s in 0.02 s steps

The min. tripping time when switched on to a failure is subject to the fault current level. See the following diagram. The diagram shows the tripping time under worst conditions like ageing, temperature.

M i n i m a l e A u s l ö s e z e i t e n

M i n i m u m t r i p p i n g t i m e s

1 0 0 0

1 0 0 e in p h a s ig e

S p e is u n g / s in g le p h a s e s u p p ly z w e ip h a s ig e

S p e is u n g / d u a l p h a s e s u p p ly d r e ip h a s ig e

S p e is u n g / t h r e e p h a s e s u p p ly

1 0

0 5 1 0

I

Im

1 5 2 0

Im = Minimum current (chapter 4.1.1)

With the WIC1 protection system minimal tripping times of 40 ms can be achieved.

Time correction of current 0 of current > Im

≤ 45ms

≥ 35ms

Disengaging time < 30ms

* The starting point of the characteristic should be in the area of the rated CT current , e. g. W2 = 16 – 56 A. If over the parameter I> the starting point is set higher, then the relay cut the characteristics at 20 x upper rated current.



For relay versions WIC1-2 and WIC1-3 the adjustment of values is done according to the tables listed below:

Characteristic curve = HEX-Switch 2/DIP-Switch 1 (5 - 6)

DIP 1-5

DIP 1-6

OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF

OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON

DIP 1-7

DIP 1-8

OFF OFF OFF OFF ON ON ON

OFF OFF OFF OFF OFF OFF

ON OFF OFF OFF OFF ON ON ON ON

OFF OFF ON ON ON ON ON ON ON ON

HEX 2

Characteristic DEFT

I> = HEX-Switch 3/DIP-Switch 2 (1 - 4)

DIP 2-1

DIP 2-2



DIP 2-3

DIP 2-4





HEX 3 x Is 0.9 0.95 1 1.05 1.1 1.15

tI> = HEX-Switch 4/DIP-Switch 2 (5 - 8)

DIP 2-5

DIP 2-6



DIP 2-7

DIP 2-8





HEX 4

1.2 1.3 1.4 1.5 1.6 1.8

2 2.25 Exit time (s) *1

Time (s) *2 0.04 0.3 0.6 1 2 3 4 6 8 10 15 30 60 120 210

Factor “a”

*1

*2

The time setting table is valid for WIC1-2/3 up to device version no. G008

The time setting table is valid for WIC1-2/3 onward from device version no. G009

I>> = HEX-Switch 5/DIP-Switch 3 (1 – 4)

DIP 3-1


DIP 3-2

DIP 3-3

OFF OFF ON ON OFF OFF ON


ON OFF OFF ON ON OFF OFF ON ON


DIP 3-4 OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON

HEX 5 x Is 1 2 3 4 5 6 7 8 9 10 12 14 16 18 20 Exit tI>> = HEX-Switch 6/DIP-Switch 3 (5 - 8)

DIP 3-5


DIP 3-6 OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON

DIP 3-7

DIP 3-8





HEX 6

0,04 0,07 0,1 0,15 0,2 0,25 0,3 0,4 0,6 0,8 1,0 1,4 1,8 2,2 2,6 3,0 time (s)



5.1.3 Earth current protection

Current

I

Internal calculated cumulative current formation

E>

0.2 to 2.5 x IS in steps of 0.05 x IS when adjusting via the interface for the WIC1-1

Tripping time t

IE>

0.1s to 20s in steps of 0.01 when adjusting via the interface for the WIC1-1

IE> = HEX-Switch 7/DIP-Switch 4 (1 - 4)

DIP 4-1

DIP 4-2

OFF ON OFF ON OFF ON OFF ON OFF ON


DIP 4-3

DIP 4-4

OFF OFF OFF OFF ON ON ON ON OFF OFF OFF ON ON ON ON


HEX 7 x Is tIE> = HEX-Switch 8/DIP-Switch 4 (5 – 8)

DIP 4-5

OFF ON OFF ON OFF ON OFF ON OFF ON

DIP 4-6 OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON

DIP 4-7

DIP 4-8

OFF OFF OFF OFF ON ON ON ON OFF OFF OFF ON ON ON ON


HEX 8 time (s) 0.1 0.2 0.4 0.6 0.8 1 1,5 2 2.5

3 3,5 4 6 8 10 20

The earth current tripping is blocked if actually measured phase current exceeds 5x Is (rated current)

I> Exit-function

I>

I>> Exit-function

Trip

I>> or

IE> Exit-function

IE>

Block if is > 5x Is

In theory the I> overcurrent and I>> short circuit function can be disabled. If the I> stage is disabled and the I>> value is set to >5x Is the earth current stage can’t trip if a measured current is higher than 5x Is.

The function is implemented due to accuracy of earth current calculation in combination with the lowest setting of earth current element.

All WIC1 relay versions are set in our works at the smallest possible setting values.

Is = smallest possible rated current (W1=8, W2=16A, W3=32A, W4=64A, W5=128A, W6=256A)

Characteristic: Definite Time

I> = 0.9 x In tI> = 0.04s

I>> = 1.00 x In tI>> = 0.04s

IE> = 0.20 x IN tIE> = 0.10s



5.3 Routine safety check

In case of misadjustment of the relay, e.g. selection of non-assigned switch positions, the relay operates with the following setting values.

I

S

= upper rated CT current

Characteristic =

I> =

DEFT

Deactivated (Exit) t

I>

=

I>> =

0.04 s

20 x I

S

0.04 s t

I>>

=

With earth fault element

I t

E>

IE>

= 2.5 x I

S s

A circuitry is integrated to give an additional back-up protection in case of processor or storage errors. By this circuitry a short-circuit protection with the following trip values is guaranteed:

 I>> = 20 times highest rated CT current

 tI>> = 40 ms

The relay option WIC1-xxx-W works with an additional backup-protection when

 The watch-dog of the microcontroller responded,





0.8 times lowest rated CT current is flowing, the energy storage is charged (charging time is 1s at lower rated CT current),

5.4 Fault value memory

A fault value memory is integrated in the WIC1 where data of the latest fault occurrence is stored.

The stored information can only be read out via the PC interface. The following fault references are available:



 the protective element causing the trip or an externally triggered trip values of the trip current in the individual phases or earth fault currents (with E type)


Manual WIC1 GB

5.5 Communication

Woodward

For connection to the RS 232 interface of a PC a WIC1PC2 adapter is needed.

For connection to the USB interface of a PC a WIC1-PC3 adapter is needed.

Through these adapters the galvanic isolation between protection device and the PC is reached and it supplies the WIC1 with the necessary energy. For communication a proprietary Woodward protocol is used.

Woodward

Figure 5.1: WIC1, WIC1PC2 and Notebook

USB

WIC1PC3

Figure 5.2: WIC1, WIC1PC3 and Notebook

5.5.2 WIC1PC2 adapter

To connect the WIC1-PC to a serial interface, a 9-pole standard zero-modem-cable is needed.

The lockable opening at the housing of WIC1 and the 6-pole plug are of matching design.

A 9V battery is integrated in the PC adapter. During reading out and writing of parameters the

WIC1 is fed by the PC adapter

The battery charging level is indicated by LED on the PC adapter. As soon as the adapter is connected with the PC and the battery charging level is high enough, the LED lights up. Dropping of the battery voltage is indicated by LED.

The data exchange between PC/Palm Top and WIC1 is signaled by lighting up of the LED “Tx” and

“Rx” resp. Transmit/Receive.

5.5.3 WIC1PC3 Adapter

To connect the WIC1PC3 to a USB interface, a USB cable with type A connector and type B connector is needed. The cable is included in delivery.

The USB port supplies the WIB1 via a DC/DC converter



The terminals for connection of the CT, the tripping coil of the external trip input as well as the flag indicator output are provided at the left side of the WIC1. Dependent on the relay type either screwtype terminals or screw-type plug-in terminals in 4-block arrangement are used. Make of both terminal types is Phönix.

A cover serves as protection against accidental contact and prevents unintended loosening of the plug in terminal connections. Terminal marking is durable embossed in the housing.

5.6.1 Remote trip input

To the four terminals of the top terminal block 230V~; 115V~; 0V~ and PE the relevant aux. voltage for the remote trip input is connected. This input is electrically isolated and can be loaded continuously.

Terminal PE is the central earthing point for the protective system.

Technical Data:

Input voltage range: 230 V ± 15%

115

Tripping delay: ≤ 1 s

5.6.2 Impulse output for the tripping coil

The energy-low tripping coil of the circuit breaker is connected to terminals TC+ and TC- of the second terminal block. The trip energy is provided by a capacitor store integrated in the protection relay. Length of the trip impulse is 50ms; the pause between the individual pulses depends on the impedance of the tripping coil and the current level. Pulsing is continued until the activation threshold is undershot.

Technical Data:

Trip energy: E ≥ 0.1 Ws

Voltage: ≥ 24 V DC

It is not allowed to connect any active voltage to the trip coil output

5.6.3 Earthing

The fourth terminal (PE) of the top terminal block is the central earth connection point of the protection system.

5.6.4 Impulse output for the relay

The energy-low tripping coil of the circuit breaker is connected to terminals FI+ and FI-- of the second terminal block. The trip energy is provided by a capacitor store integrated in the protection relay. Length of the trip impulse is 50ms; the pause between the individual pulses depends on the impedance of the flag indicator and the current level. Pulsing is continued until the activation threshold is undershot.

Technical Data:

Energy: E ≥ 0.01 Ws

Voltage: ≥ 24 V DC

It is not allowed to connect any active voltage to the trip coil output



5.6.5 Measuring inputs for the CTs

The measuring inputs of the WIC1 protection system are matching the allocated CTs. Also the power requirement of the relay and the CT output power match.

The connection of common CTs with secondary currants of 1 A or 5 A is inadmissible!



Frequency:

Nominal: 50/60

Thermal load capacity:

45 Hz to 65 Hz

Hz

Permanently: 2.5 x highest rated CT current

Dynamic load capacity:

Disengaging ratio:

1s

3s

25 kA CT primary current

20 kA CT primary current

62.5 kA CT primary current

95% of the pick up value

5.7.2 Temperature

Temperature range when stored: -40°C to +85°C

Temperature range when in operation: -40°C to +85°C

5.7.3 Accuracy

Tripping times: DMT: ±1% of the setting value absolutely ±10 ms

IMT: dependent on the current level and chosen

characteristic,

Earth fault element: ≤ 5% of the setting value in the range of IE> x IS

≤ 5% of the IS in the range of IE> x IS

Measuring accuracy for phase current at 0°C to +50°C with CT WE1, WE2, W3, W4 or W5:

W2:

I

I

I

Ph

7.2

10 A ≤ I

Ph

Ph

Ph

> Is: ≤ 5% of I

≥ 14.4 A:

14.4

Ph

< 14.4 A: ≤ 7.5% of I

Ph

< 28,8 A:

Measuring accuracy for phase current at -40°C to +85°C

≤ 12.5% of I

Ph

Ph

≤ 7.5% of I

≤ 5% of I

Ph

A

≤ 5% of I

< 20 A: ≤ 12.5% of I

20 A ≤ I

Ph

≥ 28.8 A:

Ph

Ph

Additional temperature influence: ≤ 2.5 % of I

Ph

Measuring accuracy for earth current ≤ 2x Accuracy of phase current

The accuracies apply to all CT types available from the smallest adjustable primary currents up to a primary current of 20 x the highest rated CT current selectable.

CT Type Applying Accuracy Measuring Range

WIC1-WE1 7.2 – 288* A

WIC1-W1 7.2 – 288* A

WIC1-WE2 14.4 – 1152 A

WIC1-W2 14.4 – 1152 A

WIC1-W3 28.8 – 2304 A

WIC1-W4 57.6 – 4608 A

WIC1-W5 115.2 – 9216 A



WIC1-W6 230.4 – 18432 A

Selectable up to a primary current of 20 x the highest rated current



5.7.4 Insulation voltage withstand

Test of withstand alternating voltage for 1 min:

Test of lightning surge voltage 1.2/50 µs, 0.5 J

IEC 60255-5 2.5 kV

IEC 60255-5 5 kV

5.7.5 EMC

Interference immunity against discharges of static electricity

DIN EN 60255-22-2 [05/97]

DIN EN 61000-4-2 [03/96]

Class 3

Air discharge contact discharge

8 kV

6 kV

Interference immunity against high-speed transient interference quantities

DIN IEC 60255-22-4 [10/93]

DIN EN 61000-4-4 [03/96] power supply, mains inputs other inputs and outputs

±4 kV, 2.5 kHz

±2 kV, 5 kHz

Class 4

Interference immunity against 1 MHz burst disturbance tests

DIN EN 60255-22-6 [11/94]

DIN IEC 60255-22-1 [05/91] differential mode common mode

2.5 kV, 1 MHz

1 kV, 2 s

Interference immunity against surge immunity test

DIN EN 61000-6-2 [03/00]

DIN EN 61000-4-5 [09/96]

Interference immunity against high-frequent electromagnetic fields

DIN

Class 3

4 kV/2 kV

Interference immunity against magnetic fields of energy based frequency

DIN EN 61000-4-8 [05/94] continuously 100 A/m

Class

Interference immunity against line conducted interference quantities induced by high-frequent fields

EN

Class 3 (0.15-230 MHz)

Interference immunity against surge voltage

DIN EN 61000-4-5 [09/96]

Class 4 within a current circuit current circuit to earth

Measuring of the radio interference voltage

DIN EN 55011 [10/97]

Measuring of the radio interference radiation

DIN EN 55011 [10/97]

2 kV

4 kV

Limit. value class B

Limit. value class B



5.7.6 Ambient

Vibration and continuous vibration test

DIN

Class 2

60255-21-1

Shock and continuous shock test

DIN

Class 2

60255-21-2

Earthquake test

DIN

Class 2

Classification

DIN EN 60068-1 [03/95] Climate category 40/085/56

Test Ad: Cold

DIN EN 60068-2-1 [03/95] Temperature stress

-40°C h

Test Bd: Dry heat

DIN EN 60068-2-2 [08/94] Temperature humidity

+85°C

<50%

Test Ca: Humid heat (constantly)

DIN IEC 60068-2-3 [12/86] Temperature +40°C humidity of h

Test Db :Humid heat (cyclic)

DIN IEC 60068-2-30 [09/86] Temperature humidity

+85°C

95%

Class of protection Relay housing

Electronics

IP

IP 65

Terminals IP 20



5.7.7 Outside dimension of CTs

The structural forms of the CTs depend on the switchboard construction, i.e. they are in compliance with specific customer needs. We have various standard designs. For further information please contact your sales partner.

Note

The current transformers shown below are dimensioned for nominal voltages <1000 V. This means, for application in MVswitchboards <36 kV these current transformers may only be used with insulated primary conductors for example cables with appropriate insulation resistance against earth. These current transformers are not allowed to be used for non-insulated primary conductors

> 1000 V against earth.

Type: WIC1-WxAS1

The diameter A of the CT whole is 45 mm at type WIC1W1AS1

The diameter A of the CT whole is 50 mm at types WIC1W2AS1 to WIC1W5AS1

Figure 5.3: Type WIC1-W2AS1 – WIC1-W5AS1 as panel mounting


Woodward

Type: WIC1-W6AS1

Manual WIC1 GB

Figure 5.4: Type WIC1-W6AS1 as panel mounting

Figure 5.5: Type WIC1-WxH1 as plug on type


Manual WIC1 GB

1000

100 a = t[s]

10

1

0.1

1 2 3 4 5 6 7 8 910

Multiples of pick up setting *

Figure 5.5: Normal Inverse

10.0

8.0

6.0

4.0

3.0

2.0

1.4

1.0

0.8

0.6

0.5

0.4

0.3

0.2

0.1

20

0.05

*Multiples of pick up setting = Is * I>

1000

100 a = t[s]

10

1

0.1

0.1

0.05

20

2.0

1.4

1.0

0.8

0.6

0.5

0.4

0.3

0.2

10.0

8.0

6.0

4.0

3.0

1 2 3 4 5 6 7 8 910


Figure 5.6: Very Inverse


*Multiples of pick up setting =


Woodward

31

10 t[s]

1

0.1

Woodward

10000

1000

100 t[s]

10

1

0.1

a =

2.0

1.4

1.0

0.8

0.6

0.5

0.4

0.3

0.2

10.0

8.0

6.0

4.0

3.0

0.01

1 2 3 4 5 6 7 8 910


Figure 55.7: Extremely Inverse

20


100 t t t t t t t t

0.01

1 10


Figure 5.8: Definite Time


32

Manual WIC1 GB


Manual WIC1 GB

10000

1000 t[s]

100

10

1

1.0

0.8

0.6

0.5

0.4

0.3

0.2

0.1

a =

10.0

8.0

6.0

5.0

4.0

3.0

2.0

0.1

1 2 3 4 5 6 7 8 910


Figure 5.9: Long time inverse

20


10000

1000

100 t[s]

10

1

0.1

a =

10.0

6.0

4.0

3.0

2.0

1.0

0.01

1 2 3 4 5 6 7 8 910


Figure 5.10: HV-fuse

20



Woodward

33

10000

1000 t[s]

100

10

Woodward

100 t[s]

10

1

1.0

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

a =

10.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

0.05

0.1

1 2 3 4 5 6 7 8 910


Figure 5.2: RI-Inverse

20


100000

1

0.1

a =

10.0

6.0

4.0

3.0

0.01

1 2 3 4 5 6 7 8 910


Figure 5.3: FR-fuse

20


34

Manual WIC1 GB


Manual WIC1 GB

5.8.2 Calculation

Normal Inverse:

0.14

.

·

1

Very Inverse:

13.5

1

·

Extremely Inverse:

80

·

1

Long time inverse:

120

·

1

RI-Inverse Time:

1

0.339

0.236 ·

HV-Fuse:

10

FR-Fuse

·

1 2

1 2.66

·

2.66

.

10

10

.

10

·

0.1

· .

· .

· .

.

.

·

0.1

.

·

·

0.1

0.1


Woodward

35

Woodward

5.8.3 Flag

WI1-SZ4

Technical Data

Coil:

- can be set electrically

- can be reset mechanically

Connector assignment

Coil connection Core color mm²

0.25

black

Cable connection length: 1m

WI1-SZ5:

Function

Technical Data

Coil:

Contact rating

24V DC 10%

230V AC/3A

115V

24V







DC/0.12A

DC/0.2A

DC/2A

Flag indicator with two potential free contacts can be set and reset electrically can be reset mechanically

Connector assignment:

Coil connection Core color

brown mm²

0.25

0.25

Function

Gnd

(+)

orange contact

yellow

green contact

blue

red

Cable connection length: 1m

Manual WIC1 GB



5.9 Description of application

5.10 Foreword

As CT-powered protection relay the WIC1 is mainly used in MV switchboards with circuit breakers, protecting distribution transformers in local and industrial networks. Due to its small size the WIC1 is very well suited for the use in compact switchboards.

Medium voltage (7.2 kV, 10 kV, 20 kV)

50/51

0,4 kV

Figure 5.4: Basic circuit diagram of a standard switchboard with 2 feeders and 1 outgoing transformer panel

The ability of the protection system WIC1 to adapt to different primary currents makes it possible that it is used for all standard rated transformer loads and the different MV operational voltages.



5.11 Selection of the CT transformation voltage ratio

Selection of the CT suitable for the WIC1 depends on the rated current of the transformer to be protected and is calculated acc. to the following formula:

Example:

SN = 1600 kVA

UN = 10 kV

- I

N

= 92.5 A

CTs WIC1-W3 and WIC1-4 are suitable for this rated current.

Marginal conditions, which should be regarded additionally with the selection of the CT’s.

1. Short-circuit transient characteristic

The WIC1 can measure a short-circuit current of a circuit up to 20 times of the upper rated CT current. This means for the CT selected above, W3: 112 A 20 = 2240 A or ,

W4: 224 A 20 = 4480 A. If the short-circuit current of a circuit is approx. 3 kA, for example, because of the location, then the preference should be given to the W4 CT, so that the current can be measured cleanly by the WIC1. current.

Furthermore please pay attention to the operating current of the protection object. The operating current should be in the rated CT current range. The WIC1 system can be loaded continuously up to 2.5 times of the upper rated CT current. This has no effect on the measurement of the overload. But due to the limitation of the measurement to

20 times the upper rated CT current, the short-circuit protection is limited.

With parameter Is the calculated rated current is preset in the protection relay.

According to table 4.1 IS currents of 88A can be adjusted for both CT types in relay versions WIC1-

2 and WIC1-3.

In the example shown below, the transformer can be operated with 1.1 times the rated current for

10s. The setting value for I> is calculated as follows:

WIC1-1:

I> = 1.1 x Is with Is = 92.5 A

WIC1-2 and WIC1-3:

1.1 · 1.1 · 92.5

88

1.16 ·

By means of the switches, however, only 1.15 x Is or 1.2 x Is can be set for parameter I>. Therefore it is up to the user to choose either 1.15 x Is or 1.2 x Is

The different rated primary currents of all standard transformer sizes at various rated mains voltages are compiled in chapter 7.2.



5.12 Adjustment instruction for inverse characteristic

In the introduction phase of the WIC1 it came to understanding problems during the adjustment of the protection relay, in particular when using inverse characteristics. In the following now the connections are for this described.

Notion definition:

I

S

= Setting value of the load current

With the parameter Is the operating current of the protected equipment is set. Due to the application of wide range CT’s the use of only one CT for a wide primary current range is applicable. All further setting parameter are related to the parameter Is.

I> = Pick up value of the over current element

With this parameter the pick up value of the over current element is set. Here for it is to distinguish between the use of an defined time characteristic or inverse time characteristic.

At the use of a defined time characteristic the parameter I> specified the pick up value of the overcurrent element. Exceed the measured current the factor Is I> the WIC1 will pick up.

At the use of a inverse time characteristic the parameter I> specified the starting point of the characteristic curve. Means, that the factor Is I> is the starting point of the characteristic curve at one times of . t

I>

= Delay time of the over current element by use of DEFT a = Time multiplier of the characteristic curve by the use of INV

This parameter serve to delay the trip of the WIC1 after a pick up occurs. By the use of a defined time characteristic the WIC1 trips when the pick up still exist at the time elapsed.

By the use of a inverse characteristic the factor a shift the characteristic curve (see diagram).

I>> = Pick up value of the short circuit element

With this parameter the pick up value of the short current element is set. Exceed the measured current the factor IS I>> the WIC1 will pick up. t

I>>

= Tripping time of the short circuit element

This parameter serve to delay the trip of the WIC1 after a pick up occurs. The WIC1 trips when the pick up still exist at the time elapsed.

I

E>

= Pick up value of the earth fault element

With this parameter the pick up value of the earth fault element is set. Exceed the measured current the factor IS IE> the WIC1 will pick up. t

IE>

= Tripping time of the earth fault element

This parameter serve to delay the trip of the WIC1 after a pick up occurs. The WIC1 trips when the pick up still exist at the time elapsed.



Estimation of the tripping time at inverse characteristics

The setting and estimation by the use of an inverse characteristic will be explained at the following example.

Boundary condition:

Operating current of the load (IS)

Short current (I>>)

Delay time for I>>

Primary test current value

72A

Selected CT ratio

Characteristic

WIC1-W3, 32 A – 112 A

Normal Inverse N-INV

Starting point of the characteristic

Over (I>):

I> x IS

1.4

(tI>) 0.2

1 kA

100 ms

150 A

Setting of the WIC1:

I

S

= 72 A

I> = 1.4

„a“ (tI>) = 0.2

I>> = 14 (1kA/72A = 13.88) tI>> = 0.1s

Estimation of the tripping time from the characteristic curve

Starting point of the curve = 1.4 72 A = 100.8 A, this correspond to = 1 I/I

S

x I>.

Primary testing current = 150 A, here for a factor as follows is calculated I/IS I> = 150 A/100.8 A

= 1.488

1000

100 a = t[s]

10

3.5

1

2.0

1.4

1.0

0.8

0.6

0.5

0.4

0.3

0.2

10.0

8.0

6.0

4.0

3.0

0.1

0.05

0.1

1

1.488

2 3 4 5 6 7 8 910


20



From the curve a tripping time of 3.5s is estimated.



6. Commissioning and Maintenance

6.1.1 Important

Putting into operation and the relevant tests should only be carried out by skilled personnel. We do not accept any liability for damage caused by improper handling of the protection system, or of the primary side of the equipment. Pay attention to check that over the primary circuit no second current flow way is possible. (Grounding of the feeder).

6.2 Accessories for commissioning work

For commissioning of the protection system the following accessories should be available:





For WIC1-1 a –WIC1PC adapter and a PC or with software



Secondary testing system (see chapter 5.3ff)

Screwdriver; cross slot type, size 1; 3mm slot parameters

[VA]

100

90

80

70

60

50

40

30

20

10

0

0

6.3 Criteria to be taken into account for protection devices fed by CT’s

With this kind of current supply it has to be taken into account that the CT has to feed more power than this is the case for protection devices with an additional aux. voltage source. Furthermore it has to be noted that – with reference to the entire measuring range of the protection devices – the input impedance of the individual phases is not linear. The necessary power for testing the WIC1 is shown on the following graphs.

Power consumption per phase of the WIC1

10 20 30 40 50 60 70 80

[I/lowest operating current]

Figure 6.1: Power consumption of one phase over the entire measuring range of the WIC1

Power consumption per phase of the WIC1

[VA]

6

5

4

3

2

1

0

0 1 2 3 4 5 6 7

[I/lowest operating current]

8 9 10

Figure 6.2: Power absorbed by one phase over the range 0.1 – 10 lowest operating current



Lowest operating current = lower rated current x 0,9. The operating current is choosen by Is * I>.

WIC1-W1xx: 7.2 A (Is = 8 A)

WIC1-W2xx: 14.4 A (Is = 16 A)

WIC1-W3xx: 28.8 A (Is = 32 A)

WIC1-W4xx: 57.6 A (Is = 64 A)

WIC1-W5xx: 115.2 A Is = 128)

WIC1-W6xx: 230.4 A (Is = 256 A)

Is = lowest rated current

6.4 Special features for the WIC1 test

The WIC1 receives its supply energy out of the measuring circuit. Conditional on the circuit logic the WIC1 changes its measuring load in a cyclic way and that in an 1kHz cycle.

This can have an effect on the feeding source.

6.5 Selection of the secondary test system



When selecting the secondary test system the following particulars should be taken into account.





Secondary test system to be used as power source.

Three phases for the earth current test, one phase for the phase current test

(see chapter 5.8).

 Sufficient output power for the switching points to be tested (see fig. 5.1 and 5.2).

 The highest possible test current for testing via the test winding is at 22.4amps. A test system with an output current up to 10amps should be enough.

A timer for measuring the time 0 – 300s. The time signal can be measured via the WIC1 outputs TC+/TC- or FI+/FI- as positive edge of a 24V signal.

6.6 Checks during commissioning

When putting into operation, the wiring and setting of the protection relay should be checked. Here the person doing the commissioning work is assisted by the integrated test windings of the WIC1 protection system, which are on the front of the relay. Hence any wiring jobs as well as actions in the cable connection area can be disregarded. checks

Wiring has to be checked with the circuitry shown in the diagram below.

L1

Meas. winding 0.26 A

1

S1

2

S2

50 A

Test winding

1 A

3 gn/ye

L1

C

D

N

1 ph ~

1 A

1-phase

Testing device

TC+

TC-

DI

Timer

WIC1

Figure 6.3: Connection of a single-phase testing device (phase L1) with CT WIC1-W2



The testing current is fed via sockets L1, L2, L3 and N. The test winding is rated such that the fed current of 1A balances a primary current of 50A (CT type WIC1-W2). The timer should be connect parallel to the tripping coil or the flag indicator. If there is no tripping coil or flag indicator available when the test is performed, an input resistor should be connected to the timer. The resistance of a timer should be in the range of 20 up to1 k . This prevents false measurements when tests are repeated in short intervals because the energy store cannot be discharged. adjustment

The protection parameters are to be adjusted according to chapter 4 of this instruction. The set parameters can be registered directly on the sticker affixed on the relay.

There are two methods to carry out the tests: Primary test and secondary test.

When the primary test method is used, the test current is impressed via the primary winding.

When the secondary test method is used, the test current is impressed via the CD test winding.

There are four different standard CT types available for the WIC1.

CT Type

WIC1-WE1

WIC1-W1

Induced Current

1A

1A

WIC1-WE2 1A

WIC1-W2 1A

WIC1-W3 1A

WIC1-W4 1A

WIC1-W5 1A

WIC1-W6 1A

Table 6.1: ratio of test current in relation to the primary current

Primary Current

25A

25A

50A

50A

100A

200A

400A

800A

Transformation Ratio

25:1

25:1

50:1

50:1

100:1

200:1

400:1

800:1



6.7.1 Test

The transformation ratio of primary currents to secondary currents of the CTs are equally proportionate as the test current via the CD winding to the secondary current. This means, no matter which CT type is in operation, for the secondary test always the same test values are used.

DIP 1-1

DIP 1-2

DIP 1-3

OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON



DIP 1-4

HEX-Schalter

I

S


0 1 2 3 4 5 6 7 8 9 A B C D E F

WIC1-W1 8 9 10 11 12 13 14 15 16 17 18 20 22 24 26 28

WIC1-W2 16 18 20 22 24 26 28 30 32 34 36 40 44 48 52 56

WIC1-W3 32 36 40 44 48 52 56 60 64 68 72 80 88 96 104 112

WIC1-W4 64 72 80 88 96 104 112 120 128 136 144 160 176 192 208 224

WIC1-W5 128 144 160 176 192 208 224 240 256 272 288 320 352 384 416 448

WIC1-W6 256 288 320 352 384 416 448 480 512 544 576 640 704 768 832 896

Table 6.21: Test values via CD winding with the different CT types

This means when Is is multiplied with the setting value of the relevant protection element of I>, I>> or IE> it equals the test current via the test winding. The CT type is of no consequence. The following tables show all setting values for the protection steps I>, I>> and IE>.

6.7.2 Switching

DIP 1-1

DIP 1-2

DIP 1-3

DIP 1-4





0 1 2 3 4 5 6 7 8 9 A B C D E F HEX-Schalter

I>

Einstellwert I> 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.30 1.40 1.50 1.60 1.80 2.00 2.25 2.50 EXIT

Is = Hex „0“ 0.288 0.304 0.320 0.336 0.352 0.368 0.384 0.416 0.448 0.480 0.512 0.576 0.640 0.720 0.800 -

Is = Hex „1“ 0.324 0.342 0.360 0.378 0.396 0.414 0.432 0.468 0.504 0.540 0.576 0.648 0.720 0.810 0.900 -

Is = Hex „2“ 0.360 0.380 0.400 0.420 0.440 0.460 0.480 0.520 0.560 0.600 0.640 0.720 0.800 0.900 1.000 -

Is = Hex „3“

0.396 0.418 0.440 0.462 0.484 0.506 0.528 0.572 0.616 0.660 0.704 0.792 0.880 0.990 1.100 -

Is = Hex „4“ 0.432 0.456 0.480 0.504 0.528 0.552 0.576 0.624 0.672 0.720 0.768 0.864 0.960 1.080 1.200 -

Is = Hex „5“

0.468 0.494 0.520 0.546 0.572 0.598 0.624 0.676 0.728 0.780 0.832 0.936 1.040 1.170 1.300 -

Is = Hex „6“ 0.504 0.532 0.560 0.588 0.616 0.644 0.672 0.728 0.784 0.840 0.896 1.008 1.120 1.260 1.400 -

Is = Hex „7“

0.540 0.570 0.600 0.630 0.660 0.690 0.720 0.780 0.840 0.900 0.960 1.080 1.200 1.350 1.500 -

Is = Hex „8“ 0.576 0.608 0.640 0.672 0.704 0.736 0.768 0.832 0.896 0.960 1.024 1.152 1.280 1.440 1.600 -

Is = Hex „9“ 0.612 0.646 0.680 0.714 0.748 0.782 0.816 0.884 0.952 1.020 1.088 1.224 1.360 1.530 1.700 -

Is = Hex „A“ 0.648 0.684 0.720 0.756 0.792 0.828 0.864 0.936 1.008 1.080 1.152 1.296 1.440 1.620 1.800 -

Is = Hex „B“ 0.720 0.760 0.800 0.840 0.880 0.920 0.960 1.040 1.120 1.200 1.280 1.440 1.600 1.800 2.000 -

Is = Hex „C“ 0.792 0.836 0.880 0.924 0.968 1.012 1.056 1.144 1.232 1.320 1.408 1.584 1.760 1.980 2.200 -

Is = Hex „D“ 0.864 0.912 0.960 1.008 1.056 1.104 1.152 1.248 1.344 1.440 1.536 1.728 1.920 2.160 2.400 -

Is = Hex „E“

0.936 0.988 1.040 1.092 1.144 1.196 1.248 1.352 1.456 1.560 1.664 1.872 2.080 2.340 2.600 -

Is = Hex „F“ 1.008 1.064 1.120 1.176 1.232 1.288 1.344 1.456 1.568 1.680 1.792 2.016 2.240 2.520 2.800 -

Table 6.3: Test current via CD winding with the I> step and the different Is setting values



6.7.3 Switching

HEX-Schalter

I>>





0 1 2 3 4 5 6 7 8 9 A B C D E F

Hex

Hex

Hex

Hex

0.32 0.64 0.96 1.28 1.60 1.92 2.24 2.56 2.88 3.20 3.84 4.48 5.12 5.76 6.40

0.36 0.72 1.08 1.44 1.80 2.16 2.52 2.88 3.24 3.60 4.32 5.04 5.76 6.48 7.20

0.40 0.80 1.20 1.60 2.00 2.40 2.80 3.20 3.60 4.00 4.80 5.60 6.40 7.20 8.00

0.44 0.88 1.32 1.76 2.20 2.64 3.08 3.52 3.96 4.40 5.28 6.16 7.04 7.92 8.80

-

-

-

-

Hex 0.48 0.96 1.44 1.92 2.40 2.88 3.36 3.84 4.32 4.80 5.76 6.72 7.68 8.64 9.60

-

Hex 0.52 1.04 1.56 2.08 2.60 3.12 3.64 4.16 4.68 5.20 6.24 7.28 8.32 9.36 10.40

-

Is = Hex „6“

Is = Hex „7“

Is = Hex „8“

Is = Hex „9“

Is = Hex „A“

Is = Hex „B“

Is = Hex „C“

Is = Hex „D“

Is = Hex „E“

Is = Hex „F“

0.56 1.12 1.68 2.24 2.80 3.36 3.92 4.48 5.04 5.60 6.72 7.84 8.96 10.08 11.20

0.60 1.20 1.80 2.40 3.00 3.60 4.20 4.80 5.40 6.00 7.20 8.40 9.60 10.80 12.00

0.64 1.28 1.92 2.56 3.20 3.84 4.48 5.12 5.76 6.40 7.68 8.96 10.24 11.52 12.80

0.68 1.36 2.04 2.72 3.40 4.08 4.76 5.44 6.12 6.80 8.16 9.52 10.88 12.24 13.60

0.72 1.44 2.16 2.88 3.60 4.32 5.04 5.76 6.48 7.20 8.64 10.08 11.52 12.96 14.40

-

-

-

-

-

0.80 1.60 2.40 3.20 4.00 4.80 5.60 6.40 7.20 8.00 9.60 11.20 12.80 14.40 16.00

-

0.88 1.76 2.64 3.52 4.40 5.28 6.16 7.04 7.92 8.80 10.56 12.32 14.08 15.84 17.60

-

0.96 1.92 2.88 3.84 4.80 5.76 6.72 7.68 8.64 9.60 11.52 13.44 15.36 17.28 19.20

-

1.04 2.08 3.12 4.16 5.20 6.24 7.28 8.32 9.36 10.40 12.48 14.56 16.64 18.72 20.80

-

1.12 2.24 3.36 4.48 5.60 6.72 7.84 8.96 10.08 11.20 13.44 15.68 17.92 20.16 22.40

-

Table 6.4: Test current via CD winding with the I>> step and the different Is setting values



6.8 Special features for earth current tests

Functional description:

In the WIC1 the earth current is calculated and cannot be measured. It is established from the geometrical amount of the three phase current values, more or less a numerical Holmgreen. If, for instant, a single-phase test current is impressed, the measuring value (tripping value) in the earth current path equals the current in the tested phase. If, with a phase shift of 120° a three-phase test current is impressed, the measuring value in the earth current path equals zero.

Requirement on the test system:

The WIC1 is powered by the instrument transformer. In order to guarantee reliable tripping a minimal current of 0.9 x lowest nominal CT current (0.9 x lowest I> setting) has to flow in one of the phases. If the setting of the earth current IE> is lower than the smallest possible switching point for the phase current, then the switching point for earth current tripping can only be tested by a threephase power source. In case the set switching point for earth current is higher than the smallest possible switching point for overcurrent tripping (Is x I>, then the test can be performed with a single-phase power source.

6.8.1 Switching

HEX-Schalter

IE>





0 1 2 3 4 5 6 7 8 9 A B C D E F

Einstellwert

IE>

0.2* 0.3* 0.4* 0.5* 0.6* 0.7* 0.8* 0.9 1 1.2 1.4 1.6 1.8 2.0 2.5 EXIT

Is = Hex „0“ 0,064

0,096 0,128 0,160 0,192 0,224 0,256 0,288 0,320 0,384 0,448 0,512 0,576 0,640 0,800 -

Is = Hex „1“ 0,072 0,108 0,144 0,180 0,216 0,252 0,288 0,324 0,360 0,432 0,504 0,576 0,648 0,720 0,900 -

Is = Hex „2“ 0,080 0,120 0,160 0,200 0,240 0,280 0,320 0,360 0,400 0,480 0,560 0,640 0,720 0,800 1,000 -

Is = Hex „3“ 0,088 0,132 0,176 0,220 0,264 0,308 0,352 0,396 0,440 0,528 0,616 0,704 0,792 0,880 1,100 -

Is = Hex „4“ 0,096 0,144 0,192 0,240 0,288 0,336 0,384 0,432 0,480 0,576 0,672 0,768 0,864 0,960 1,200 -

Is = Hex „5“ 0,104 0,156 0,208 0,260 0,312 0,364 0,416 0,468 0,520 0,624 0,728 0,832 0,936 1,040 1,300 -

Is = Hex „6“ 0,112 0,168 0,224 0,280 0,336 0,392 0,448 0,504 0,560 0,672 0,784 0,896 1,008 1,120 1,400 -

Is = Hex „7“ 0,120 0,180 0,240 0,300 0,360 0,420 0,480 0,540 0,600 0,720 0,840 0,960 1,080 1,200 1,500 -

Is = Hex „8“ 0,128 0,192 0,256 0,320 0,384 0,448 0,512 0,576 0,640 0,768 0,896 1,024 1,152 1,280 1,600 -

Is = Hex „9“ 0,136 0,204 0,272 0,340 0,408 0,476 0,544 0,612 0,680 0,816 0,952 1,088 1,224 1,360 1,700 -

Is = Hex „A“ 0,144 0,216 0,288 0,360 0,432 0,504 0,576 0,648 0,720 0,864 1,008 1,152 1,296 1,440 1,800 -

Is = Hex „B“ 0,160 0,240 0,320 0,400 0,480 0,560 0,640 0,720 0,800 0,960 1,120 1,280 1,440 1,600 2,000 -

Is = Hex „C“ 0,176 0,264 0,352 0,440 0,528 0,616 0,704 0,792 0,880 1,056 1,232 1,408 1,584 1,760 2,200 -

Is = Hex „D“ 0,192 0,288 0,384 0,480 0,576 0,672 0,768 0,864 0,960 1,152 1,344 1,536 1,728 1,920 2,400 -

Is = Hex „E“ 0,208 0,312 0,416 0,520 0,624 0,728 0,832 0,936 1,040 1,248 1,456 1,664 1,872 2,080 2,600 -

Is = Hex „F“ 0,224 0,336 0,448 0,560 0,672 0,784 0,896 1,008 1,120 1,344 1,568 1,792 2,016 2,240 2,800 -

Table 6.5: Test current via the CD winding with the IE> step and the different Is setting values

* When the earth current setting is <0.9 x Is a three-phase test system has to be used for correct testing. With a single-phase test the trip is only triggered from 0.9 x Is on.



6.9 Test procedure by way of example

When testing the WIC1, the tests of the individual equipment should be carried out from the highest setting value to the smallest one. The order ought to be:

1) short circuit I>>

2) over current I>

3) earth current IE>

In here the complete test can only be exemplified with free defined switching points. For the test a single-phase power source has to be used.

General setting:

Is = Nominal Current of the equipment conditional on the used CT, on which all switching points of

I>>, I> and IE> are based.

CHAR = either Definite Time or Inverse Characteristic – dependent on the requirement.

Device versions WIC1-1 and WIC1-4 are adjusted via the serial interface by way of a PC. Device versions WIC1-2 are adjusted by way of the DIP switches. Device versions WIC1-3 are adjusted by way of the Hex switches.

Here the test will be performed with the following settings:

Is

Char = Definite Time

I> = 1.05 x Is

tI>

I>> = 4.00 x Is

tI>>

0.9

tIE>

Test step 1): Test of the short circuit step I>>. For this the following parameters have to be blocked:

=

tI>>

=

The single-phase test current has to be increased slowly until the relay or the LED indicator trips

(applies only for relay types WIC1-2/3/4). The tripping current can be controlled by the fault value memory. Since the WIC1 is operating phase-selectively, each phase can be tested separately.

Test step 2): Test of the trip delay tI>>

Settings: I>> = 4.00 x Is

tI>>

During the single-phase test the switching point of the I>> has to be rapidly changed from 90% to

120%. The tripping time is ascertained by an external timer. The jump is to be used as start impulse. The trip impulse coming from the flag indicator or the tripping coil serves as stop signal.

If a 90% or 120% jump is not possible with the test instrument, then the jump should be from 0 to

120% of the I>>. Dependent on the test parameter for I>> and the set tripping time for tI>>, the charging and boot time needed by the relay has to be deducted. See chapter 4.1.2 Phase Over-

Current Time Protection.



Test step 3): Test of the over-current step I>:

Settings: I> = 1.05 x Is

tI>

I>> = 4.00 x Is

tI>>

EXIT

tIE>

Test to be carried out as described under “Test step 1”.

Test step 4): Test of the trip delay tI>

Settings: I> = 1.05 x Is

tI>

Test to be carried out as described under „Test step 2“.

Test step 5): Test of the earth current step IE>

tI>

=

1.00s

I>> = 4.00 x Is

tI>>

IE> = 0.9 x Is

tIE>


Test step 6: Test of the trip delay tIE>

Settings: IE> = 0.9 x Is

tIE>


Tests on the earth current path can only be performed with a single-phase power source if the switching point for the IE> setting is >= 0.9 x Is. See chapter 5.8.



6.10 Maintenance

The entire protection system WIC1 is designed for a maintenance-free period of 25 years, hence there are no specific jobs necessary to be done during the operating life of the relays. Very often, a periodical check of the protective adjustments is required by the end user. Such checks are left to the choice of the user and can be carried out as described under 6.2.

6.10.1 Faults

Should, however, faults occur despite the special design of the protection system and the comprehensive quality control, the possibility for fault clearance by the user is only limited. For possible faults and their clearance please see the following table:

Fault

Wrong measuring and tripping values

Wrong measuring and tripping values

Low-energy tripping coil does not trip

Cause of failure

Test winding short-circuited

Earthing of a winding terminal of the measuring winding

Coil polarized with permanent magnet wrong connected to

TC+ and TC-

Remedy

Secondary side of test winding always to be operated openly

(except when relays are tested)

No winding terminal of the measuring winding to be earthed! Earthing is done internally and brought out at terminal PE

Wiring to be checked

6.10.2 Repair work

The WIC1 is a hermetically sealed relay and so it is not possible to do any repair work at your end.

Due to the optimized cost structure, however, repair in our works is also not beneficial. During the warranty period the protection relay is exchanged by us free of charge, provided the failure was not caused by external influences. Should such a situation occur, please contact our local sales agent.



7. Product Specific Features

7.1 Assignment of terminals

The protection relay is equipped with 20 screw-type terminals, make Phoenix and 4 test sockets.

The 2 different relay versions are defined by the kind of terminal used:

WIC1-xP plug-in terminals for connection of CTs and trip circuits

FI-

S1

S2

C

D

S1

S2

C

Terminal marking

230 V

115 V

N

PE

TC+

TC-

FI+

Description

Remote trip input for auxiliary voltage 230 V AC

Remote trip input for auxiliary voltage 115 V AC

Remote trip input N (earth)

Centre earthing point WIC1

Electric pulse output +pole

Electric pulse output, -pole

Flag indicator output, +pole

Flag indicator output, -pole

CT measuring winding connection L1


CT test winding connection L1





D

S1

S2

C

D

Socket L1

Socket L2

Socket L3






Connection for input test current L1



Socket N Connection for input test current N (earth)

The terminals 230 V, 115 V, N and PE are provided as fixed terminals.

7.1.1 Earthing

For earthing the WIC connection terminal PE is used.

The measuring winding (terminals S1and S2) of the CTs must not be earthed, otherwise the measurement results are distorted, ensuring in erratic behaviour of the relay. Connection D of the respective test winding can externally be connected with terminal PE.



Listed CT ranges in relation to the transformer rated currents

3.00 3.30 4.20 5.50 6.00 6.60 10.00 11.00 12.00 13.80 15.00 15.50 17.50 20.00 21.00 22.00 24.00 U[kV]

50.00

75.00

100.00

125.00

160.00

200.00

9,62

14,43

19,25

8,75

13,12

17,50

10,31

13,75

7,87

10,50

7,22

9,62 8,75

WIC1-W1

24,06

28,87

21,87

26,24

17,18

20,62

13,12

15,75

12,03

14,43

10,93

13,12

7,22

8,66 7,87 7,22

34,99 27,49 20,99 19,25 17,50 11,55 10,50 9,62 8,37 7,70 7,45

250.00

315.00

400.00

500.00

630.00

800.00

1000.00

1250.00

34,37 26,24 24,06 21,87 14,43 13,12 12,03 10,46 9,62 9,31 8,25 7,22

38,49 33,47 30,79

38,49

29,80

37,25

26,39

32,99

23,09

28,87

36,08

21,99

27,49

34,37

20,99

26,24

32,80

36,37 33,07 30,31 26,36 24,25 23,47 20,78 18,19 17,32 16,53 15,16

19,25

24,06

30,07

33,07 30,31 27,56 18,19 16,53 15,16 13,18 12,12 11,73 10,39 9,09 8,66 8,27 7,58

38,49 34,99 23,09 20,99 19,25 16,73 15,40 14,90 13,20 11,55 11,00 10,50 9,62

28,87 26,24 24,06 20,92 19,25 18,62 16,50 14,43 13,75 13,12 12,03

1600.00

2000.00

38,49

3.00 3.30 4.20 5.50 6.00 6.60 10.00 11.00 12.00 13.80 15.00 15.50 17.50 20.00 21.00 22.00 24.00 U[kV]

50.00

75.00 14.43

100.00 19.25 17.50

WIC1-W2

30.79

200.00

48.11

315.00

400.00 76.98 69.98 54.99 41.99 38.49 34.99 23.09 20.99 19.25 16.73 15.40 14.90

500.00 96.23 87.48 68.73 52.49 48.11 43.74 28.87 26.24 24.06 20.92 19.25 18.62 16.50 14.43

630.00 121.24 110.22 86.60 66.13 60.62 55.11 36.37 33.07 30.31 26.36 24.25 23.47 20.78 18.19 17.32 16.53 15.16

800.00 139.96 109.97 83.98 76.98 69.98 46.19 41.99 38.49 33.47 30.79 29.80 26.39 23.09 21.99 20.99 19.25

1000.00

1250.00

1600.00

2000.00

2500.00

137.46 104.97 96.23 87.48 57.74 52.49 48.11 41.84 38.49 37.25 32.99 28.87 27.49 26.24 24.06

131.22 120.28 109.35 72.17 65.61 60.14 52.30 48.11 46.56 41.24 36.08 34.37 32.80 30.07

139.96 92.38 83.98 76.98 66.94 61.58 59.60 52.79 46.19 43.99 41.99 38.49

115.47 104.97 96.23 83.67 76.98 74.50 65.98 57.74 54.99 52.49 48.11

3150.00

4000.00

S[kVA]

3.00 3.30 4.20 5.50 6.00 6.60 10.00 11.00 12.00 13.80 15.00 15.50 17.50 20.00 21.00 22.00 24.00 U[kV]

125.00

160.00

WIC1-W3

48.11

315.00

96.23

86.60 66.13 60.62 55.11 36.37 33.07 30.31

800.00 153.96 139.96

1000.00 137.46 104.97 96.23 87.48 57.74 52.49 48.11 41.84 38.49 37.25 32.99 28.87

1600.00

2000.00

2500.00

3150.00

4000.00

S[kVA]

262.43 240.56 218.69 144.34 131.22 120.28 104.59 96.23 93.12 82.48 72.17 68.73 65.61 60.14

275.55 181.87 165.33 151.55 131.79 121.24 117.33 103.92 90.93 86.60 82.67 75.78

230.94 209.95 192.45 167.35 153.96 148.99 131.97 115.47 109.97 104.97 96.23

3.00 3.30 4.20 5.50 6.00 6.60 10.00 11.00 12.00 13.80 15.00 15.50 17.50 20.00 21.00 22.00 24.00 U[kV]

WIC1-W4

60.62

96.23

630.00

153.96

1000.00

1600.00 307.92 279.93 219.94 167.96 153.96 139.96 92.38 83.98 76.98 66.94 61.58 59.60

2000.00 384.90 349.91 274.93 209.95 192.45 174.95 115.47 104.97 96.23 83.67 76.98 74.50 65.98 57.74

2500.00 481.13 437.39 343.66 262.43 240.56 218.69 144.34 131.22 120.28 104.59 96.23 93.12 82.48 72.17 68.73 65.61 60.14

3150.00

4000.00

S[kVA]

551.11 433.01 330.66 303.11 275.55 181.87 165.33 151.55 131.79 121.24 117.33 103.92 90.93 86.60 82.67 75.78

549.86 419.89 384.90 349.91 230.94 209.95 192.45 167.35 153.96 148.99 131.97 115.47 109.97 104.97 96.23

3.00 3.30 4.20 5.50 6.00 6.60 10.00 11.00 12.00 13.80 15.00 15.50 17.50 20.00 21.00 22.00 24.00 U[kV]

WIC1-W5

121.24

192.45

1250.00

307.92

2000.00

2500.00 481.13 437.39 343.66 262.43 240.56 218.69 14434 131.22 120.28

3150.00 606.22 551.11 433.01 330.66 303.11 275.55 181.87 165.33 151.55 131.79 121.24 117.33

4000.00 769.80 699.82 549.86 419.89 384.90 349.91 230.94 209.95 192.45 167.35 153.96 148.99 131.97 115.47

S[kVA]

3.00 3.30 4.20 5.50 6.00 6.60 10.00 11.00 12.00 13.80 15.00 15.50 17.50 20.00 21.00 22.00 24.00 U[kV]

WIC1-W6

240.56

384.90

2500.00

577.35

4000.00

7500.00 1443.38 1312.16 1030.98 787.30 721.69 656.08 433.01 393.65 360.84 313.78 288.68 279.36 247.44

10000.00 1924.50 1749.55 1374.64 1049.73 962.25 874.77 577.35 524.86 481.13 418.37 384.90 372.48 329.91 288.68 274.93 262.43 240.56

S[kVA]


Woodward

8. Annex

8.1 Dimensional drawing relay

Manual WIC1 GB

Figure 8.1: Dimensional drawing

8.2 Dimensional drawing flag indicator

Figure 88.2: Flag indicator WI1-SZ4/WI1-SZ5



3-phase current measuring I>;I>> self powered

– parameter setting via serial interface

– parameter setting via DIP switches

– parameter setting via HEX switches

– Parameter setting via interface, with LED and second operator interface

Connection mode

– plug in screw terminal

With additional earth current supervision

– standard 0.2 to 2.5 x I

S

*

I

E>

(calculated) )

With backup-protection (Trip when micro controller is fault)

Standard with I>> trip at 20 times highest rated CT current

– Trip at 0.8 times lowest rated CT current and full energy storage

* Please leave box empty if option is not desired

Flag indicators WI1

Small type, front 34 x 23 mm, connection lead 1m

Small type, front 34 x 23 mm, connection lead 1m with bi-stable signal contact 230V AC, 3A

SZ4

SZ5

1

2

3

4

*

-W

Accessoires WIC1

PC adapter with USB port

Watchdog test unit

Current transformer (1 piece)

PC3

TU

WIC1

8 – 28 A

8 – 28 A

16 – 56 A

16 – 56 A

32 – 112 A

64 – 224 A

128 – 448 A

256 – 896 A

SVA 100 100-45

SVA 100 100-45

SVA 100-100-50

SVA 100-100-50

SVA 100-100-50

SVA 100-100-50

SVA 100-100-50

GSA 120-60-50

5P40

5P40

10P80

5P80

5P80

5P80

5P80

5P80

W1AS1

WE1AS1

W2AS1

WE2AS1

W3AS1

W4AS1

W5AS1

W6AS1

On request

Please observe the note in chapter 4.7.7.

Further designs e.g. supporting type, plug-on type etc. on request.

Note: CT housing in accordance with the customer requirement.



List of adjustments for WIC1

Project:

Functional group: Location: Component Identification:

Relay

Parameter Setting

Default

Function

I>

Actual

Unit Setting Setting

W2

A 16

DEFT x IS 0.9 tI> a

I>> tI>>

IE> tIE>

Pickup value for DMT characteristic or start value of the IMT characteristic

Tripping time for DMT characteristic

Multiplier for IMT characteristic

Pickup value for short-circuit element

Tripping time for short-circuit element

Pickup value for earth fault element (only type

E)

Tripping time for earth fault element s s x IS s x IS s

0.04

--

1

0.04

0.2

0.1

Checker:


Manual WIC1 GB


Woodward

55


56

Woodward Kempen GmbH

Krefelder Weg 47  D – 47906 Kempen (Germany)

Postfach 10 07 55 (P.O.Box)  D – 47884 Kempen (Germany)

Phone: +49 (0) 21 52 145 1

Internet www.woodward.com

Sales

Phone: +49 (0) 21 52 145 216 or 342  Telefax: +49 (0) 21 52 145 354 e-mail: [email protected]

Service

Phone: +49 (0) 21 52 145 614  Telefax: +49 (0) 21 52 145 455 e-mail: [email protected]


Woodward WIC1-1 manual

WIC1 – CT Powered Time Overcurrent

And Earth Current Relay

Manual WIC1 (Revision D)

1. Comments on the manual

1.3 Electrostatic Discharge Awareness

2. Introduction

2.1 How to use this instruction

2.2 Introductory remarks on the WIC1

3. Handling, Installation and Outside Dimensions

3.2 Installation of the relay

4. Operating instructions

4.1 General information on the WIC1

4.3 CTs for the WIC1

5. Technical Data, Characteristics and Features

5.3 Routine safety check

5.4 Fault value memory

5.5 Communication

5.9 Description of application

5.10 Foreword

5.11 Selection of the CT transformation voltage ratio

5.12 Adjustment instruction for inverse characteristic

6. Commissioning and Maintenance

6.2 Accessories for commissioning work

6.3 Criteria to be taken into account for protection devices fed by CT’s

6.4 Special features for the WIC1 test

6.5 Selection of the secondary test system

6.6 Checks during commissioning

6.8 Special features for earth current tests

6.9 Test procedure by way of example

6.10 Maintenance

7. Product Specific Features

7.1 Assignment of terminals

8. Annex

8.1 Dimensional drawing relay

8.2 Dimensional drawing flag indicator

Flag indicators WI1

Accessoires WIC1

Key Features

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Frequently Answers and Questions

What type of protection does the WIC1-1 provide?

Can the WIC1-1 communicate with other devices?

Is the WIC1-1 suitable for use in industrial environments?

Table of contents