Woodward WIC1 Series User manual

WIC1 – CT Powered Time Overcurrent
And Earth Current Relay
Manual WIC1 (Revision D)

Woodward Manual WIC1 GB
2 DOK-TD-WIC1 Rev.C
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 as-
sumed by Woodward Governor Company unless otherwise expressly undertaken.
© Woodward 1994-2008

Manual WIC1 GB Woodward
DOK-TD-WIC1 Rev.C 3
Contents
1.Comments on the manual...........................................................................5
1.1Information Concerning Liability and Warranty ...................................................................5
1.2IMPORTANT DEFINITIONS ...............................................................................................6
1.3Electrostatic Discharge Awareness.....................................................................................7
2.Introduction..................................................................................................8
2.1How to use this instruction ..................................................................................................8
2.2Introductory remarks on the WIC1 ......................................................................................8
2.3Product description .............................................................................................................9
3.Handling, Installation and Outside Dimensions......................................10
3.1General information...........................................................................................................10
3.1.1Upkeep of the relay .......................................................................................................10
3.1.2Storage..........................................................................................................................10
3.1.3Electrostatic discharge ..................................................................................................10
3.2Installation of the relay ......................................................................................................10
3.3Outside dimensions...........................................................................................................11
3.4Connection Diagram .........................................................................................................11
4.Operating instructions...............................................................................12
4.1General information on the WIC1......................................................................................12
4.2User interface....................................................................................................................13
4.2.1WIC1-1/WIC1-4.............................................................................................................13
4.2.2WIC1-2 ..........................................................................................................................14
4.2.3WIC1-3 ..........................................................................................................................16
4.3CTs for the WIC1 ..............................................................................................................17
5.Technical Data, Characteristics and Features.........................................18
5.1Protective functions...........................................................................................................18
5.1.1Minimal operating current and rated primary current....................................................18
5.1.2Phase time over current protection ...............................................................................19
5.1.3Earth current protection.................................................................................................21
5.2Default Settings.................................................................................................................21
5.3Routine safety check.........................................................................................................22
5.4Fault value memory...........................................................................................................22
5.5Communication .................................................................................................................23
5.5.1Communication via PC adapter ....................................................................................23
5.5.2WIC1PC2 adapter .........................................................................................................23
5.5.3WIC1PC3 Adapter.........................................................................................................23
5.6Inputs and outputs.............................................................................................................24
5.6.1Remote trip input...........................................................................................................24
5.6.2Impulse output for the tripping coil ................................................................................24
5.6.3Earthing .........................................................................................................................24
5.6.4Impulse output for the relay...........................................................................................24
5.6.5Measuring inputs for the CTs ........................................................................................25
5.7Technical Data ..................................................................................................................26
5.7.1Common Data ...............................................................................................................26
5.7.2Temperature Range ......................................................................................................26
5.7.3Accuracy........................................................................................................................26
5.7.4Insulation voltage withstand ..........................................................................................27
5.7.5EMC ..............................................................................................................................27
5.7.6Ambient conditions........................................................................................................28
5.7.7Outside dimension of CTs.............................................................................................29
5.8Characteristics and times..................................................................................................31
5.8.1Characteristic curves.....................................................................................................31
5.8.2Calculation formula for IMT characteristics...................................................................35
5.8.3Flag Indicators...............................................................................................................36
5.9Description of application ..................................................................................................37
5.10Foreword ...........................................................................................................................37
5.11Selection of the CT transformation voltage ratio...............................................................38
5.12Adjustment instruction for inverse characteristic...............................................................39

Woodward Manual WIC1 GB
4 DOK-TD-WIC1 Rev.C
6.Commissioning and Maintenance............................................................41
6.1.1Important note............................................................................................................... 41
6.2Accessories for commissioning work................................................................................ 41
6.3Criteria to be taken into account for protection devices fed by CT’s .............................. 41
6.4Special features for the WIC1 test.................................................................................... 42
6.5Selection of the secondary test system ............................................................................ 42
6.6Checks during commissioning .......................................................................................... 42
6.6.1Wiring checks ............................................................................................................... 42
6.6.2WIC1 adjustment .......................................................................................................... 43
6.7Functional Test ................................................................................................................. 43
6.7.1Test Currents ................................................................................................................ 44
6.7.2Switching points for the overcurrent steps.................................................................... 44
6.7.3Switching points for the short-circuit step ..................................................................... 45
6.8Special features for earth current tests............................................................................. 46
6.8.1Switching points for the earth current step ................................................................... 46
6.9Test procedure by way of example................................................................................... 47
6.10Maintenance ..................................................................................................................... 49
6.10.1Faults ........................................................................................................................ 49
6.10.2Repair work............................................................................................................... 49
7.Product Specific Features.........................................................................50
7.1Assignment of terminals ................................................................................................... 50
7.1.1Earthing......................................................................................................................... 50
7.2Current transformer .......................................................................................................... 51
8.Annex..........................................................................................................52
8.1Dimensional drawing relay................................................................................................ 52
8.2Dimensional drawing flag indicator................................................................................... 52
8.3Order form......................................................................................................................... 53
8.4Commissioning form ......................................................................................................... 54

Manual WIC1 GB Woodward
DOK-TD-WIC1 Rev.C 5
1.Comments on the manual
This manual explains in general the tasks of device planning, parameter setting, installation, com-
missioning, 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 func-
tions, parameters or inputs/outputs which do not apply to the device in use, please ignore that in-
formation.
All details and references are explained to the best of our knowledge and are based on our experi-
ence 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 docu-
ment was issued. We reserve the right to carry out technical modifications in line with further de-
velopment 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).
1.1 Information Concerning Liability and Warranty
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 special-
ists.
Warranty and liability conditions stated in Woodward Kempen GmbH General Terms and Condi-
tions are not supplemented by the above mentioned explanations.

Woodward Manual WIC1 GB
6 DOK-TD-WIC1 Rev.C
1.2 IMPORTANT DEFINITIONS
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 re-
sult in death or serious injury.
CAUTION, used with the safety alert symbol, indicates a hazardous situa-
tion 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.

Manual WIC1 GB Woodward
DOK-TD-WIC1 Rev.C 7
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 relia-
ble. However, no responsibility is assumed by Woodward Kempen GmbH unless otherwise
expressly undertaken.
© Woodward Kempen GmbH 2010 All Rights Reserved

Woodward Manual WIC1 GB
8 DOK-TD-WIC1 Rev.C
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 parame-
ters 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; Product specific features
Chapter 7; 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 ser-
vice 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 in-
terference 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.

Manual WIC1 GB Woodward
DOK-TD-WIC1 Rev.C 9
2.3 Product description
The WIC1 is a CT-powered protection relay with inverse time and definite time protection charac-
teristics 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
(ANSI 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)

Woodward Manual WIC1 GB
10 DOK-TD-WIC1 Rev.C
3.Handling, Installation and Outside Dimensions
3.1 General information
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.
3.1.3 Electrostatic discharge
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 Woodward
DOK-TD-WIC1 Rev.C 11
3.3 Outside dimensions
All WIC1 types are of standardized design.
Weight: 700g
Dimensions: (Width x Height x Depth) 125x170x40mm
3.4 Connection Diagram
1
2
3
gn/ge
1
2
3
gn/ge
S1
S2
C
D
S1
S2
C
D
S1
S2
C
D
WIC1
1
2
3
gn/ge
L1 L2 L3
TC+
TC-
230V
N
~
Energiearme / low energy
A
uslösespule / tripping
il
115V
PE
FI+
FI-
Schauzeichen
Flag indicator
Eingang Fernauslöse
r
input remote trip
Figure 3.1: Connection diagram
violet 0,25mm²
violett 0,25mm²
brown 0,25mm²
braun 0,25mm²
orange 0,25mm²
orange 0,25mm²
weiss 0,50mm² white 0,50mm² green 0,50mm² grün 0,50mm² red 0,50mm² rot 0,50mm² back 0,50mm² schwarz 0,50mm²blue 0,50mm²
blau 0,50mm²
yellow 0,50mm²
gelb 0,50mm²
Reset
zum WIC1
to WIC1
ext. Reset
FI+
FI-
Figure 3.2: Connection diagram WI-SZ5 flag indicator

Woodward Manual WIC1 GB
12 DOK-TD-WIC1 Rev.C
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 cur-
rent 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 cur-
rent 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 con-
nected. 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 condi-
tions.
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 en-
tire protection system (CTs, protection devices, tripping coil) incl. the wiring can be tested.

Manual WIC1 GB Woodward
DOK-TD-WIC1 Rev.C 13
4.2 User interface
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 di-
rectly at the protection relay.
For the basic version WIC1-1 the adjustment of protective functions can only be done via the com-
munication 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

Woodward Manual WIC1 GB
14 DOK-TD-WIC1 Rev.C
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.
Figure 4.2: WIC1-4
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.

Manual WIC1 GB Woodward
DOK-TD-WIC1 Rev.C 15
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 IS: Rated CT current
1; 5-8 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 tI>: Tripping time of the definite time over current element or factor
“a” of the inverse time characteristic
3; 1-4 I>>: Pick-up value of the short-circuit element
3; 5-8 tI>>: Tripping time of the short-circuit element
4; 1-4 IE>: Pick-up value of the definite time earth over current element
4; 5-8 tIE>: 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.
Figure 4.3: WIC1-2

Woodward Manual WIC1 GB
16 DOK-TD-WIC1 Rev.C
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 func-
tion.
Switch Setting parameter
1 IS: Rated CT current
2 Choice of characteristics
3 I>: Pick-up value of the definite time over current element or start value of the in-
verse time characteristic
4 tI>: Tripping time of the definite time over current element or time factor “a” of the in-
verse time characteristic
5 I>>: Pick-up value of the short-circuit element
6 tI>>: Tripping time of the short-circuit element
7 IE>: Pick-up value of the definite time earth over current element
8 tIE>: 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.
Figure 4.4: WIC1-3

Manual WIC1 GB Woodward
DOK-TD-WIC1 Rev.C 17
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 Rated CT current IS
WIC1-WE1 8 – 28 A
WIC1-W1 8 – 28 A
WIC1-WE2 16 – 56 A
WIC1-W2 16 – 56 A
WIC1-W3 32 – 112 A
WIC1-W4 64 – 224 A
WIC1-W5 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 chap-
ter “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 ac-
curacy of the whole system if the current transformer is a W1 or W2 type and primary current val-
ues 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 opera-
tion range this CT type is more precise than the ordinary W2 type.

Woodward Manual WIC1 GB
18 DOK-TD-WIC1 Rev.C
5.Technical Data, Characteristics and Features
5.1 Protective functions
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 cur-
rent 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 follow-
ing 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 scal-
ing:
CT Type Rated CT current Step
WIC1-WE1 8 – 28 A 0.1 A
WIC1-W1 8 – 28 A 0.1A
WIC1-WE2 16 – 56 A 0.2 A
WIC1-W2 16 – 56 A 0.2 A
WIC1-W3 32 – 112 A 0.4 A
WIC1-W4 64 – 224 A 0.8 A
WIC1-W5 128 – 448 A 1.6 A
WIC1-W6 256 – 896 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 OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON
DIP 1-2 OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON
DIP 1-3 OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF ON ON ON ON
DIP 1-4 OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON
HEX 1 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
* All values are primary values in Ampere
Table 5.1

Manual WIC1 GB Woodward
DOK-TD-WIC1 Rev.C 19
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 Arithmetic averages measurement
Threshold values I> 0.9 to 2.5 x IS in steps of 0.05 x IS
when adjusting via interface
I>> 1 to 20 x IS in steps of 0.1 x IS
when adjusting 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 - 1s in 0.01 s steps
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 (V-INV)
Extremely Inverse (E-INV)
Long Time Inverse (L-INV)
RI-Inverse(RI-INV)
Fuse characteristic of a HV fuse
Fuse characteristic of a full range fuse (FR-Fuse)
Time factor 0.05 to 10 in steps of 0.05 when adjusting via interface
Tripping times for the definite
time short-circuit element tI>> 0.04s to 3s in the following steps when adjusting via inter-
face
0.04s - 1s in 0.01 s steps
1s-3sin0.02ssteps
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.
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 ≤45ms
of current > Im ≥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 pa-
rameter I> the starting point is set higher, then the relay cut the characteristics at 20 x upper rated current.
Minimale Auslösezeiten
Minimum tripping times
10
100
1000
0 5 10 15 20
t [ms]
einphasige
Speisung /
single phase
supply
zweiphasige
Speisung /
dual phase
supply
dreiphasige
Speisung /
three phase
supply
Im
I

Woodward Manual WIC1 GB
20 DOK-TD-WIC1 Rev.C
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 OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON
DIP 1-6 OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON
DIP 1-7 OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF ON ON ON ON
DIP 1-8 OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON
HEX 2 0 1 2 3 4 5 6 7 8 9 A B C D E F
Characteristic DEFT N-INV V-INV E-INV LI-INV RI-INV HV-Fuse FR-Fuse X X X X X X X X
I> = HEX-Switch 3/DIP-Switch 2 (1 - 4)
DIP 2-1 OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON
DIP 2-2 OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON
DIP 2-3 OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF ON ON ON ON
DIP 2-4 OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON
HEX 3 0 1 2 3 4 5 6 7 8 9 A B C D E F
x Is 0.9 0.95 1 1.05 1.1 1.15 1.2 1.3 1.4 1.5 1.6 1.8 2 2.25 2.5 Exit
tI> = HEX-Switch 4/DIP-Switch 2 (5 - 8)
DIP 2-5 OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON
DIP 2-6 OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON
DIP 2-7 OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF ON ON ON ON
DIP 2-8 OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON
HEX 4 0 1 2 3 4 5 6 7 8 9 A B C D E F
time (s) *1 0.04 1 2 3 4 5 6 8 10 15 30 60 120 180 240 300
Time (s) *2 0.04 0.3 0.6 1 2 3 4 6 8 10 15 30 60 120 210 300
Factor “a” 0.05 0.1 0.2 0.3 0.4 0.5 0.6 0.8 1 2 3 4 5 6 8 10
*1 The time setting table is valid for WIC1-2/3 up to device version no. G008
*2 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 OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON
DIP 3-2 OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON
DIP 3-3 OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF ON ON ON ON
DIP 3-4 OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON
HEX 5 0 1 2 3 4 5 6 7 8 9 A B C D E F
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 OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON
DIP 3-6 OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON
DIP 3-7 OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF ON ON ON ON
DIP 3-8 OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON
HEX 6 0 1 2 3 4 5 6 7 8 9 A B C D E F
time (s) 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