CONTROLS CONTROLS
Products and specifications subject to change without notice.
Order/Technical Support – Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com
2/81
2
WRL SERIES
PHASE CONTROL RELAY
UL listed CSA recognized
•Monitors
Phase Sequence
Loss of Any Phase even if Induced Voltage
reaches 95% of Nominal Voltage
•Under Voltage Detection
•Trip Delay Timer Built-in
•LED Relay Status Indicator
SPECIFICATIONS:
Input Power . . . . . . . . . . . . . . . . . . . 3 x 230 (50/60 Hz)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 x 380 (50/60 Hz)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 x 480 (50/60 Hz)
Maximum voltage . . . . . . . . . . . . . . 3 x 280 VAC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 x 420 VAC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 x 530 VAC
Minimum voltage . . . . . . . . . . . . . . 3 x 160 VAC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 x 260 VAC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 x 340 VAC
Threshold adjustment range . . . . . 160 to 230 VAC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 260 to 380 VAC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 340 to 480 VAC
Max power consumption . . . . . . . . 2 VA
Dial accuracy . . . . . . . . . . . . . . . . . ±10%
Temperature De-rating . . . . . . . . . . ±0.04%/°C
Dead Band . . . . . . . . . . . . . . . . . . . 4% of 480 VAC
Response Time . . . . . . . . . . . . . . . . 300 ms on Make
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 sec on Break
Output
SPDT Version (WRL) Series) . . . . . 10 Amp 250 VAC
Max. power consumption . . . . . . . . 2000 VA
Max. voltage . . . . . . . . . . . . . . . . . . 250 VAC
Electrical life . . . . . . . . . . . . . . . . . . 2 x 107operations
Mechanical life . . . . . . . . . . . . . . . . 1 x 106operations
Operating temperature . . . . . . . . . . -10°C to +60°C
Weight . . . . . . . . . . . . . . . . . . . . . . . 3.5 oz. (100g)
MOUNTING
L= 11 pin plug-in
P= 8 pin plug-in
SERIES
WRL = SPDT Version
D
MOUNTING
WRL
SERIES
230A
INPUT POWER
INPUT POWER
230A = 3 x 230 VAC
380A = 3 x 380 VAC
480A = 3 x 480 VAC
WIRING DIAGRAM:
ORDERING INFORMATION:
MODE OF OPERATION:
The WRL Phase Control Relay monitors the sequence loss or reversal
of three phase power supplies. The output relay is energized when the
phase sequence is correct and the phase voltage is above the voltage
threshold set by the front knob. The output relay will de-energize after 2
seconds (built-in timer) when the phase voltage drops under the voltage
threshold or when phase sequence is lost. The WRL Series is available
in three voltage ranges: 230 VAC, 380 VAC and 480 VAC.
CONTROLS CONTROLS
Products and specifications subject to change without notice.
Order/Technical Support – Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com
2/82
SPECIFICATIONS:
Input Power Directly . . . . . . . . 3 x 220 60 Hz
from controlled voltage ±15% 3 x 380 60 Hz
3 x 440 60 Hz
Power consumption . . . . . . . . . 3 VA at 220 V
Output . . . . . . . . . . . . . . . . . . . SPDT relay
Contact material . . . . . . . . . . . AgCdO
Maximum Loading . . . . . . . . . 10 AC resistive 8A DC inductive
Maximum switching voltage . . 250 VAC 250 VDC
Relay max. power rating . . . . . 220 VA 80 W
Mechanical life of relay . . . . . . 30 x 106operations
Electrical life of relay . . . . . . . . 2 x 105operations at 2200VA resistive load
Operating temperature . . . . . . +14°F to +140°F -10°C to +60°C
Weight . . . . . . . . . . . . . . . . . . . 7 oz. (200g)
Note: The alarm threshold adjustment is 5% to 15% of asymmetry between
the phases. The initial response time is .1 seconds at 5% asymmetry and 1
second at 15% after input power is applied. When a phase loss or failure
occurs, the “off delay” response time is 100 ms.
MOUNTING
D= DIN-rail mounting
L= 11 pin plug-in
P= 8 pin plug-in
SERIES
WRA
L
MOUNTING
WRA
SERIES
380 A
INPUT POWER
INPUT POWER
220A = 3 x 220 VAC
380A = 3 x 380 VAC
440A = 3 x 415/440 VAC
WIRING DIAGRAM:
ORDERING INFORMATION:
MODE OF OPERATION:
The WRL Phase Control Relay monitors the sequence loss or reversal
of three phase power supplies. The output relay is energized when
the phase sequence is correct and is de-energize when the phase
sequence is wrong or one phase is lost. It monitors the symmetry
of 3 voltages and a loss of phase even when the voltage is reinjected
through a machine. The rate of asymmetry is controlled between 5%
and 15% by a top mounted potentiometer.
M
NR
11
12 14
d1 U V W
RST
R = L1
S = L2
T = L3
STOP
START
ST
D1
R S T R S T R S
T
R
R T S
DWRA
LWRA
PWRA
11
1
1
12
4
2
14
3
8
R
5
3
S
6
4
T
7
5
WRA SERIES
PHASE CONTROL RELAY
UL listed CSA recognized (220 VAC Version Only)
•Monitors
Phase Sequence
Loss of Any Phase even if Induced Voltage
reaches 95% of Nominal Voltage
•LED Relay Status Indicator
•SPDT 10 Amp Relay Output
CONTROLS CONTROLS
Products and specifications subject to change without notice.
Order/Technical Support – Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com
2/83
2
WRA 2 SERIES
PHASE CONTROL RELAY
UL listed CSA recognized (220 VAC Version Only)
•Monitors
Phase Sequence
Loss of Any Phase even if Induced Voltage
reaches 95% of Nominal Voltage
•LED Relay Status Indicator
•DPDT 5 Amp Relay Output
SPECIFICATIONS:
Power consumption . . . . . . . . . 3 VA at 220 V
Output . . . . . . . . . . . . . . . . . . . DPDT relay
Contact material . . . . . . . . . . . AgCdO
Maximum Loading . . . . . . . . . 5 A AC resistive 1 A DC inductive
Maximum switching voltage . . 250 VAC 250 VDC
Relay max. power rating . . . . . 1250 VA 30 W
Mechanical life of relay . . . . . . 30 x 106operations
Electrical life of relay . . . . . . . . 2 x 105operations at 2200 VA resistive load
Operating temperature . . . . . . +14°F to +140°F -10°C to +60°C
Weight . . . . . . . . . . . . . . . . . . . 7 oz. (200g)
Note: The alarm threshold adjustment is 5% to 15% of asymmetry between
the phases. The initial response time is .1 seconds at 5% asymmetry and
1 second at 15% after input power is applied. When a phase loss or failure
occurs, the “off delay” response time is 100 ms.
MOUNTING
D= DIN-rail mounting or panel mounting
L= 11 pin plug-in
SERIES
WRA 2
L
MOUNTING
WRA 2
SERIES
380 A
INPUT POWER
INPUT POWER
220A = 3 x 220 VAC
380A = 3 x 380 VAC
440A = 3 x 415/440 VAC
WIRING DIAGRAM:
ORDERING INFORMATION:
MODE OF OPERATION:
The WRA 2 Phase Control Relay monitors the sequence loss or
reversal of three phase power supplies. The output relay is energized
when the phase sequence is correct and is de-energize when the phase
sequence is wrong or one phase is lost. It monitors the symmetry of
3 voltages and a loss of phase even when the voltage is reinjected
through a machine. The rate of asymmetry is controlled between 5%
and 15% by a top mounted potentiometer.
M
NR
11 21
12 14 22 24
d1 U V W
RST
R = L1
S = L2
T = L3
STOP
START
ST
D1
R S T R S T R S
T
R
R T S
DWRA 2
LWRA 2
11
1
12
4
14
3
R
5
S
6
T
7
21
11
22
8
24
9
CONTROLS CONTROLS
Products and specifications subject to change without notice.
Order/Technical Support – Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com
2/84
WRS SERIES
PHASE CONTROL RELAY
UL listed CSA recognized
•Monitors
Phase Sequence
Loss of Any Phase
•LED Indicator
•10 Amp SPDT Output
•Low Cost
SPECIFICATIONS:
Input Power Directly . . . . . . . . 3 x 220 60 Hz
from controlled voltage ±15% 3 x 380 60 Hz
3 x 440 60 Hz
Power consumption . . . . . . . . . 3 VA at 220 V
Output . . . . . . . . . . . . . . . . . . . SPDT relay
Contact material . . . . . . . . . . . AgCdO
Maximum Loading . . . . . . . . . 10 AC resistive 1 A SC inductive
Maximum switching voltage . . 250 VAC 250 VDC
Relay max. power rating . . . . . 2200 VA 30 W
Mechanical life of relay . . . . . . 30 x 106operations
Electrical life of relay . . . . . . . . 2 x 105operations at 2200 VA resistive load
Operating temperature . . . . . . +14°F to +140°F -10°C to +60°C
Weight . . . . . . . . . . . . . . . . . . . 7 oz. (200g)
MOUNTING
D= DIN-rail mounting or panel mounting
L= 11 pin plug-in
P= 8 pin plug-in
SERIES
WRS
L
MOUNTING
WRS
SERIES
380
INPUT POWER
INPUT POWER
220A = 3 x 220 VAC
380A = 3 x 380 VAC
440A = 3 x 415/440 VAC
WIRING DIAGRAM:
ORDERING INFORMATION:
MODE OF OPERATION:
The WRS Phase Control Relay monitors the sequence loss or reversal
of three phase power supplies. The output relay is energized when
the phase sequence is correct and is de-energize when the phase
sequence is wrong or one phase is lost.
M
NR
11
12 14
d1 U V W
RST
R = L1
S = L2
T = L3
STOP
START
ST
D1
R S T R S T R S
T
R
R T S
DWRS
LWRS
PWRS
11
1
1
12
4
2
14
3
8
R
5
3
S
6
4
T
7
5
