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| 型号： | PWRS440A |
| 厂商： | Crouzet USA |
| 文件页数： | 3/4页 |
| 文件大小： | 0K |
| 描述： | CONTROL RELAY PHASE 3X440VAC |
| 其它有关文件： | Declaration of Conformity |
| 标准包装： | 1 |
| 系列： | * |
WRA CONTROL RELAY
CONTROLS
PHASE
2 SERIES
CONTROLS
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:
WIRING DIAGRAM:
RST
RTS
RST
RS
N
R
S
T
T
R = L1
S = L2
T = L3
R
D1
The WRA 2 Phase Control Relay monitors the sequence loss or
11 21
R
S
T
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.
STOP
12 14 22
24
SPECIFICATIONS:
Power consumption . . . . . .
.
.
.
3 VA at 220 V
START
d1
U
V
W
Output
................
.
.
.
DPDT relay
Contact material
Maximum Loading
........
......
.
.
.
.
.
.
AgCdO
5 A AC resistive
1 A DC inductive
M
Maximum switching voltage
.
.
250 VAC
250 VDC
Relay max. power rating
..
.
.
.
1250 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 ...
Weight ................
.
.
.
.
.
.
+14°F to +140°F
7 oz. (200g)
-10°C to +60°C
DWRA 2
11
12
14
R
S
T
21
22
24
LWRA 2
1
4
3
5
6
7
11
8
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:
MOUNTING
D = DIN-rail mounting or panel mounting
L = 11 pin plug-in
L
MOUNTING
W RA 2
SERIES
SERIES
WRA 2
380 A
INPUT POWER
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
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