CONTROLS CONTROLS
5
Products and specifications subject to change without notice.
Consult factory for application assistance.
204 Airline Drive, Suite 300, Coppell, Texas 75019 / Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com
5-15
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.
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
