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参数资料
| 型号： | WD32-003 |
| 元件分类： | 功率/信号继电器 |
| 英文描述： | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.013A (COIL), 200VDC (COIL), 2500mW (COIL), 5A (CONTACT), 30VDC (CONTACT), DIN-RAIL MOUNT |
| 文件页数： | 7/7页 |
| 文件大小： | 499K |
| 代理商： | WD32-003 |
1314
Dimensions are shown for refer-
ence purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specied.
Specications and availability
subject to change.
KILOVAC
Catalog 1308242
Issued 3-03 (PDF Rev. 6/07)
www.tycoelectronics.com
Technical support:
Refer to inside back cover.
WD81OU Over/Underfrequency Relays
Function 81 OU
ANSI/IEEE C37.90-1978
WD81OU Operation
WD81OU frequency relays are used to provide frequency monitoring and
protection to generators, buses, power supplies, and other equipment. The
relay operates at voltages from 120 to 480 Vac and at nominal frequencies of
50, 60, and 400 Hz. External controls include nominal frequency selection,
under frequency (UF) trip set, over frequency (OF) trip set, UF time delay, and
OF time delay. A green LED indicates power to the relay. Red LED’s indicate
the status of the UF and OF trips.
WD81OU Calibration
The calibration marks on the faceplate are provided only as guides. Proper
calibration requires using an accurate frequency meter in parallel with the
input signal.
UNDER FREQUENCY
1. Remove the cover.
2. Set the SENSE FREQUENCY to the nominal system frequency. Adjust
the Under Frequency TRIP SET fully clockwise (CW) and the TIME
DELAY control fully counterclockwise (CCW).
3. Apply the desired trip frequency to the relay.
4. Slowly adjust the TRIP SET control CCW until the relay trips.
5. Set the TIME DELAY control to the desired time delay and apply nomi-
nal frequency to the relay.
6. Step down the applied frequency from nominal to just below the trip
level set in Step 4 and measure the time delay.
7. Adjust the TIME DELAY and repeat steps 5 and 6 until the desired time
delay is set.
OVER FREQUENCY
1. Remove the cover.
2. Set the SENSE FREQUENCY to the nominal system frequency. Adjust
the OF TRIP SET and TIME DELAY controls fully counterclockwise
(CCW).
3. Apply the desired trip frequency to the relay.
4. Slowly adjust the TRIP SET control clockwise (CW) until the relay trips.
5. Set the TIME DELAY control to the desired time delay and apply nomi-
nal frequency to the relay.
6. Step down the applied frequency from nominal to just below the trip
level set in Step 4 and measure the time delay.
7. Adjust the TIME DELAY and repeat steps 5 and 6 until the desired time
delay is set.
WD81OU Connections
WD81OU Specications
Nominal Operating Frequency: 50, 60 or 400 Hz., selectable.
Maximum Frequency @ 400Hz. Nominal: 1000 Hz.
Nominal Sensing Voltage: 20-480VAC.
Maximum Sensing Voltage: 575VAC.
Contact Form: 1 form C (SPDT) for underfrequency and 1 form C (SPDT)
for overfrequency.
Time Delay Adjustment: 0.5 to 10 sec.
Sense Frequency:
Frequency (nominal)
50
60
400
UF Adjustment Range
40-50
48-60
360-400
OF Adjustment Range
50-60
60-72
400-480
Control Voltage:
Model WD81OU
-001
-002
-003
Input Voltage (VDC)
18 to 54
13.5 to 32
100 to 200
Input Voltage (VAC)
–
100 to 140
None at present.
Our authorized distributors are more likely to stock these items.
Ordering Information
Typical Part Number
B
WD 81OU -002
1. Basic Series:
WD = DIN mount Protective Relay.
2. Type:
81OU = Over/Underfrequency Relay.
3. Control Voltage:
001 = 18 to 54VDC
002 = 13.5 to 32 VDC
003 = 100-200VDC or 100-140VAC.
WD81OU Controls
WD81OU Typical Hookup
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| WD81OU001 | POWER/SIGNAL RELAY, SPDT, MOMENTARY, 0.046A (COIL), 54VDC (COIL), 2500mW (COIL), 5A (CONTACT), 30VDC (CONTACT), DIN-RAIL MOUNT |
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| WD81OU003 | POWER/SIGNAL RELAY, SPDT, MOMENTARY, 0.013A (COIL), 200VDC (COIL), 2500mW (COIL), 5A (CONTACT), 30VDC (CONTACT), DIN-RAIL MOUNT |
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