Protective Relays
Table of Contents
KILOVAC WD Series, DIN Rail or Screw Mounted Protective Relays
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-2
KILOVAC WD25 Paralleling Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-3
KILOVAC WD2759 Over/Undervoltage Relays . . . . . . . . . . . . . . . . . . . . . . . . . .11-4, 11-5
KILOVAC WD32 Reverse Power Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-6, 11-7
KILOVAC WD47 Phase Sequence Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-8
KILOVAC WD5051 1Ø and 3Ø Overcurrent Relays . . . . . . . . . . . . . . . . . . . . . .11-9, 11-10
KILOVAC WD81OU Over/Underfrequency Relays . . . . . . . . . . . . . . . . . . . . . . . . . . .11-11
Voltage Sensitive Relays
WUV/WOV DC Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-12
WUV/WOV Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-13
WUVT/WOVT Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-14
WOUV DC Series, Over/Undervoltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-15
WOUVT Series, Over/Undervoltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-16
250 Series, Over/Undervoltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-17
D100X Series, Close Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-18
D101X Series, 3 Phase Adjustable, Close Differential . . . . . . . . . . . . . . . . . . . . . . . .11-19
Reverse Power Relay
700 Series w/ Adjustable Time Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-20
Phase Failure Relay
1000 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-21
Phase Sequence Relay
900 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-22
Current Balance Relay
WCB Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-23
Current Sensitive Relays
WC1 & WCT1 Series, Overcurrent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-24
WC3 & WCT3 Series, Overcurrent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-25
Current Differential Relay
WCD Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-26
Paralleling Relays
1800 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-27
Selection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-27
Frequency Sensitive Relays
WOF & WUF Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-28
WOUF Series, Over/Underfrequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-29
20-000 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-30
25-000 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-31
20-050-19 Series (Voltage/Frequency) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-32
Ground Fault Relays
WGD Series — Floating Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-33
WC1G Series — Grounded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-34
Additional Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-35 – 11-43
11
Protective Relays
11–1
Catalog 5-1773450-5
Revised 3-13
www.te.com
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
Dimensions are in millimeters
unless otherwise specified.
USA: +1 800 522 6752
Asia Pacific: +86 0 400 820 6015
UK: +44 800 267 666
For additional support numbers
please visit www.te.com
Protective Relays
KILOVAC WD Series, DIN Rail or Screw Mounted Protective Relays
Product Facts
n
n
n
n
n
n
n
WD25 Paralleling (Synch
Check) Relays
WD2759 Over/undervoltage
Relays
WD32 Reverse Power
Relays
WD47 Phase Sequence
Relays
WD5051 Single- or Three-
Phase Overcurrent Relays
WD81OU
Over/Underfrequency Relays
File E58048,
DIN EN50022-35
R
Installation and Maintenance
Information
Installation
— To mount the WD
series protective relay on a DIN rail,
hook the top edge of the cutout on the
base of the case over one edge of the
DIN rail, then press the opposite side of
the cutout containing the release clip
over the opposite side of the DIN rail. To
remove or reposition the relay, lever the
release clip and move the relay as
required. WD series relays should be
installed in a dry location where the
ambient temperature will be within the
operating temperature range.
Maintenance
— WD series protective
relays are solid state devices that require
no maintenance. They are not designed
to be serviced by the user. Consult
KILOVAC customer service at 805-220-
2023 if repairs should be necessary.
Users should thoroughly review the
technical data before selecting a product
part number. It is recommended that user
also seek out the pertinent approvals
files of the agencies/laboratories and
review them to ensure the product meets
the requirements for a given application.
The WD series offers
several different models
of protective relays in a
common package that is
suitable for either DIN rail
or screw mounting. These
flexible, multifunction
devices offer user selectable
voltages, sense currents
and frequencies. Adjustable
time delays are standard.
This allows a single part
number to be suitable for
multiple applications,
thereby reducing inventory
costs.
Specifications Common to
All Models
Power Consumption
—
2.5VA, maximum.
Contact Ratings
—
5 amps, resistive, at 120VAC.
5 amps, resistive, at 30VDC.
Isolation from Control to Sense
Inputs
— 2,500VAC.
Mechanical Life
—
10 million operations.
Shock
— 10g.
Vibration
— 0.062 (1.57) double
amplitude at 10-55 Hz.
Terminals
— M3.5 screws.
Maximum Wire Size
— 2 x 24 AWG
(2.5mm
2
) solid to DIN 46288 or 2 x 16
AWG (1.5mm
2
) stranded w/end sleeves.
Operating Temperature Range
—
-40°C to +60°C.
Enclosure
— Plastic case (not sealed).
Mounting Options
— Snap mounts
on standard DIN rail (DIN-EN 50022-35)
or panel mounts with M4, M5, #8 or
#10 screws.
Weight
— 14.4 oz. (400g) approxi-
mately.
Outline Dimensions
16 X M3.5
2.87
(73.0)
1.38
(35.0)
4.41
(112.0)
0.35
(9.0)
2.95
(75.0)
M5
M4
2.36
(60.0)
2.36
(60.0)
1.97
(50.0)
11–2
Catalog 5-1773450-5
Revised 3-13
www.te.com
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
Dimensions are in millimeters
unless otherwise specified.
USA: +1 800 522 6752
Asia Pacific: +86 0 400 820 6015
UK: +44 800 267 666
For additional support numbers
please visit www.te.com
Protective Relays
KILOVAC WD25 Paralleling Relays
Product Facts
n
n
Sense Voltage
Voltage (nominal)
Synch Voltage (% of nom.)
Dead Bus Voltage (% of nom.)
120
208
277
480
6 - 30% (≈ 4°- 20° electrical degree)
10 - 70% (Dead Bus)
Function 25
ANSI/IEEE C37.90-1978
Control Voltage
WD25 Operation
WD25 paralleling relays
are used to ensure that two
circuits are synchronized.
When voltage, phase
relationship and frequency
are within the selected
synchronizing limits, the
output relay will energize.
The WD25 paralleling relay
allows for a generator to be
brought online without dam-
age or system disturbance.
WD25 series with a "dead
bus" feature will energize for
a synchronized condition or
an "on line" generator, "dead
bus" condition. This "dead
bus" feature allows the gen-
erator to energize a dead
bus. The "double dead bus"
feature permits paralleling
of two buses when: (a) both
the line voltages are equal
and in phase, or (b) when
either bus is "hot" and the
other bus is "dead."
WD25 Specifications
Nominal Operating Range
—
120, 208, 277 or 480 VAC, selectable.
Maximum Sensing Range
—
575VAC.
Nominal Frequency Range
—
40-400 Hz.
Contact Form
— 2 form C (DPDT).
Model WD25
Input Voltage (VDC)
Input Voltage (VAC)
-0X1
18 to 54
—
-0X2
13.5 to 32
—
-0X3
100 to 200
100 to 140
WD25 Controls
WD25 Calibration
The calibration marks on the faceplate
are provided only as guides. Proper
calibration requires using an accurate
voltmeter. Use the following procedure
to calibrate the WD25:
1. Remove the cover.
2. Adjust the SYNC VOLTAGE control
fully counterclockwise (CCW). Apply
nominal voltage to the LINE B (bus)
sensing terminals.
3. Apply the maximum desired
synchronization voltage to the LINE A
(generator) terminals. This voltage
should be in phase with LINE B (bus)
voltage and have the same frequency.
4. Slowly adjust the SYNC VOLTAGE
control clockwise (CW) until the relay
energizes.
WD25 Connections
11
Protective Relays
WD25 Typical Hookup
Ordering Information
Typical Part Number
WD
25
-00
2
1. Basic Series:
WD = DIN mount Protective Relay.
2. Type:
25 = Paralleling Relay.
3. Dead Bus:
00 = Double Dead Bus
01 = Single Dead Bus
02 = Generator to Generator
4. Control Voltage:
1 = 18 to 54VDC
2 = 13.5 to 32 VDC
3 = 100-200VDC or 100-140VAC.
Our authorized distributors are more likely to stock these items.
WD25-001
WD25-013
Catalog 5-1773450-5
Revised 3-13
www.te.com
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
NOTE:
For single dead bus option,
connect the generator to 1 & 3 and
the bus to 5 & 7.
11–3
Dimensions are in millimeters
unless otherwise specified.
USA: +1 800 522 6752
Asia Pacific: +86 0 400 820 6015
UK: +44 800 267 666
For additional support numbers
please visit www.te.com
Protective Relays
KILOVAC WD2759 Over/Undervoltage Relays
Product Facts
n
n
WD2759 Operation
WD2759 AC voltage sens-
ing relays provide voltage
monitoring and protection
in AC systems from 50 to
400 Hz. Sensing voltages,
number of phases, over and
undervoltage setpoint, and
time delays are user config-
ured. WD2759 voltage
relays operate when the
externally adjustable trip
point is reached. An exter-
nal time delay control is
provided with an adjustment
of .5 to 10 seconds. This
time delay may be used to
prevent false tripping when
there are slight variations
in the voltage supply. On
overvoltage (OV) the output
relay energizes when the
input signal exceeds the trip
point. On undervoltage
(UV) the output relay ener-
gizes when the input signal
goes below the trip point.
A green LED indicates
power to the relay. Red
LED lights indicate the state
of the undervoltage and
overvoltage trips.
Sense Voltage
Voltage (nominal)
UV Adjustment Range
OV Adjustment Range
120
72-120
120-168
208
125-208
208-291
277
166-277
277-388
480
288-480
480-672
Function 27/59
ANSI/IEEE C37.90-1978
Control Voltage
Model WD2759
Input Voltage (VDC)
Input Voltage (VAC)
-001
18 to 54
—
-002
13.5 to 32
—
-003
100 to 200
100 to 140
WD2759 Specifications
Nominal Operating Range
—
120, 208, 277 or 480 VAC, selectable.
Maximum Sensing Range
—
700VAC.
Nominal Frequency Range
—
50-400 Hz.
Contact Form
— 1 form C (SPDT) for
undervoltage and 1 form C (SPDT) for
overvoltage.
Time Delay Adjustment
—
0.5 to 10 sec.
WD2759 Calibration
The calibration marks on the faceplate
have a maximum error of 10% and are
provided only as guides. Proper
calibration requires using an accurate
voltmeter in parallel with the input
signal. Use the following procedure to
calibrate your relay.
OVER VOLTAGE
1. Remove cover.
2. Adjust the TRIP SET control fully
clockwise (CW) and the TIME DELAY
control fully counterclockwise (CCW).
3. Apply the desired trip voltage to the
relay.
4. Slowly adjust the TRIP SET control
CCW until the relay trips.
5. Remove the applied voltage (do not
change the voltage level) and set the
TIME DELAY control to the desired
time delay.
6. Apply the trip voltage to the relay and
measure the time to trip.
7. Adjust the TIME DELAY and repeat
steps 4 and 5 until you have the
desired time delay.
UNDER VOLTAGE
1. Remove cover.
2. Adjust the TRIP SET control fully
CCW and the TIME DELAY control
fully CCW.
3. Decrease the applied sensing voltage
from the nominal value until the
desired tripping voltage is reached.
4. Slowly adjust the TRIP SET control
CW until the relay trips.
5. Set the TIME DELAY control to the
desired time delay and apply nominal
voltage to the relay.
6. Step down the applied voltage from
nominal to a level jest below the trip
level set in Step 3 and measure the
time delay.
7. Adjust the TIME DELAY and repeat
steps 4 and 5 until the desired time
delay is achieved.
Ordering Information
Typical Part Number
WD 2759 -002
1. Basic Series:
WD = DIN mount Protective Relay.
2. Type:
2759 = Over/Undervoltage Relay.
3. Control Voltage:
001 = 18 to 54VDC
002 = 13.5 to 32 VDC
003 = 100-200VDC or 100-140VAC.
Our authorized distributors are more likely to stock these items.
WD2759-003
11–4
Catalog 5-1773450-5
Revised 3-13
www.te.com
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
Dimensions are in millimeters
unless otherwise specified.
USA: +1 800 522 6752
Asia Pacific: +86 0 400 820 6015
UK: +44 800 267 666
For additional support numbers
please visit www.te.com
Protective Relays
KILOVAC WD2759 Over/Undervoltage Relays
(Continued)
WD2759 Controls
WD2759 Connections
11
Protective Relays
WD2759 Typical Hookup
11–5
Catalog 5-1773450-5
Revised 3-13
www.te.com
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
Dimensions are in millimeters
unless otherwise specified.
USA: +1 800 522 6752
Asia Pacific: +86 0 400 820 6015
UK: +44 800 267 666
For additional support numbers
please visit www.te.com
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