CONTROLS
CONTROLS
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
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.
2
SPECIFICATIONS:
Input Power
. . . . . . . . . . . . . .
.......................
.......................
Maximum voltage
. . . . . . . . .
.......................
.......................
Minimum voltage
. . . . . . . . .
.......................
.......................
Threshold adjustment range
.......................
.......................
Max power consumption
. . .
Dial accuracy
. . . . . . . . . . . .
Temperature De-rating
. . . . .
Dead Band
. . . . . . . . . . . . . .
Response Time
. . . . . . . . . . .
.......................
Output
SPDT Version (WRL) Series)
Max. power consumption
. . .
Max. voltage
. . . . . . . . . . . . .
Electrical life
. . . . . . . . . . . . .
Mechanical life
. . . . . . . . . . .
Operating temperature
. . . . .
Weight
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3 x 230 (50/60 Hz)
3 x 380 (50/60 Hz)
3 x 480 (50/60 Hz)
3 x 280 VAC
3 x 420 VAC
3 x 530 VAC
3 x 160 VAC
3 x 260 VAC
3 x 340 VAC
160 to 230 VAC
260 to 380 VAC
340 to 480 VAC
2 VA
±10%
±0.04%/°C
4% of 480 VAC
300 ms on Make
2 sec on Break
10 Amp 250 VAC
2000 VA
250 VAC
2 x 10
7
operations
1 x 10
6
operations
-10°C to +60°C
3.5 oz. (100g)
WIRING DIAGRAM:
ORDERING INFORMATION:
D
MOUNTING
WRL
SERIES
230A
INPUT POWER
MOUNTING
L
= 11 pin plug-in
P
= 8 pin plug-in
SERIES
WRL
= SPDT Version
INPUT POWER
230A
= 3 x 230 VAC
380A
= 3 x 380 VAC
480A
= 3 x 480 VAC
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
CONTROLS
CONTROLS
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
MODE OF OPERATION:
RST
RTS
RST
RS
T
WIRING DIAGRAM:
N
R
S
T
R = L1
S = L2
T = L3
R
D1
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.
11
R
S
T
12 14
STOP
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 10
6
operations
Electrical life of relay
. . . . . . . . 2 x 10
5
operations 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.
START
d1
U
V
W
M
DWRA
LWRA
PWRA
11
1
1
12
4
2
14
3
8
R
5
3
S
6
4
T
7
5
ORDERING INFORMATION:
L
MOUNTING
WRA
SERIES
380 A
INPUT POWER
MOUNTING
D
= DIN-rail mounting
L
= 11 pin plug-in
P
= 8 pin plug-in
SERIES
WRA
INPUT POWER
220A
= 3 x 220 VAC
380A
= 3 x 380 VAC
440A
= 3 x 415/440 VAC
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
CONTROLS
CONTROLS
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
2
MODE OF OPERATION:
RST
RTS
RST
RS
T
WIRING DIAGRAM:
N
R
S
T
R = L1
S = L2
T = L3
R
D1
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.
11 21
R
S
T
12 14 22
24
STOP
SPECIFICATIONS:
Power consumption
. . . . . .
Output
. . . . . . . . . . . . . . . .
Contact material
. . . . . . . .
Maximum Loading
. . . . . .
Maximum switching voltage
Relay max. power rating
. .
Mechanical life of relay
. . .
Electrical life of relay
. . . . .
Operating temperature
. . .
Weight
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3 VA at 220 V
DPDT relay
AgCdO
5 A AC resistive
250 VAC
1250 VA
30 x 10
6
operations
2 x 10
5
operations at
+14°F to +140°F
7 oz. (200g)
START
d1
U
V
W
M
1 A DC inductive
250 VDC
30 W
2200 VA resistive load
-10°C to +60°C
DWRA 2
LWRA 2
11
1
12
4
14
3
R
5
S
6
T
7
21
11
22
8
24
9
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.
ORDERING INFORMATION:
L
MOUNTING
WRA 2
SERIES
380 A
INPUT POWER
MOUNTING
D
= DIN-rail mounting or panel mounting
L
= 11 pin plug-in
SERIES
WRA 2
INPUT POWER
220A
= 3 x 220 VAC
380A
= 3 x 380 VAC
440A
= 3 x 415/440 VAC
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
CONTROLS
CONTROLS
WRS SERIES
PHASE CONTROL RELAY
UL listed
CSA recognized
• Monitors
Phase Sequence
Loss of Any Phase
• LED Indicator
• 10 Amp SPDT Output
• Low Cost
MODE OF OPERATION:
RST
RTS
RST
RS
T
WIRING DIAGRAM:
N
R
S
T
R = L1
S = L2
T = L3
R
D1
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.
STOP
11
R
S
T
12 14
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 10
6
operations
Electrical life of relay
. . . . . . . . 2 x 10
5
operations at 2200 VA resistive load
Operating temperature
. . . . . . +14°F to +140°F
-10°C to +60°C
Weight
. . . . . . . . . . . . . . . . . . . 7 oz. (200g)
START
d1
U
V
W
M
DWRS
LWRS
PWRS
11
1
1
12
4
2
14
3
8
R
5
3
S
6
4
T
7
5
ORDERING INFORMATION:
L
MOUNTING
WRS
SERIES
380
INPUT POWER
MOUNTING
D
= DIN-rail mounting or panel mounting
L
= 11 pin plug-in
P
= 8 pin plug-in
SERIES
WRS
INPUT POWER
220A
= 3 x 220 VAC
380A
= 3 x 380 VAC
440A
= 3 x 415/440 VAC
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
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