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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： | 3/7页 |
| 文件大小： | 499K |
| 代理商： | WD32-003 |
1310
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.
WD2759 Over/Undervoltage Relays
Function 27/59
ANSI/IEEE C37.90-1978
WD2759 Operation
WD2759 AC voltage sensing relays provide voltage monitoring and protection
in AC systems from 50 to 400 Hz. Sensing voltages, number of phases, over
and undervoltage setpoint, and time delays are user congured. WD2759
voltage relays operate when the externally adjustable trip point is reached.
An external time delay control is provided with an adjustment of .5 to 10 sec-
onds. This time delay may be used to prevent false tripping when there are
slight variations in the voltage supply. On overvoltage (OV) the output relay
energizes when the input signal exceeds the trip point. On undervoltage (UV)
the output relay energizes when the input signal goes below the trip point. A
green LED indicates power to the relay. Red LED lights indicate the state of
the undervoltage and overvoltage trips.
WD2759 Calibration
The calibration marks on the faceplate have a maximum error of 10% and
are provided only as guides. Proper calibration requires using an accurate
voltmeter in parallel with the input signal. Use the following procedure to
calibrate your relay.
OVER VOLTAGE
1. Remove cover.
2. Adjust the TRIP SET control fully clockwise (CW) and the TIME DELAY
control fully counterclockwise (CCW).
3. Apply the desired trip voltage to the relay.
4. Slowly adjust the TRIP SET control CCW until the relay trips.
5. Remove the applied voltage (do not change the voltage level) and set
the TIME DELAY control to the desired time delay.
6. Apply the trip voltage to the relay and measure the time to trip.
7. Adjust the TIME DELAY and repeat steps 4 and 5 until you have the
desired time delay.
UNDER VOLTAGE
1. Remove cover.
2. Adjust the TRIP SET control fully CCW and the TIME DELAY control fully
CCW.
3. Decrease the applied sensing voltage from the nominal value until the
desired tripping voltage is reached.
4. Slowly adjust the TRIP SET control CW until the relay trips.
5. Set the TIME DELAY control to the desired time delay and apply nomi-
nal voltage to the relay.
6. Step down the applied voltage from nominal to a level jest below the trip
level set in Step 3 and measure the time delay.
7. Adjust the TIME DELAY and repeat steps 4 and 5 until the desired time
delay is achieved.
WD2759 Connections
WD2759 Specications
Nominal Operating Range: 120, 208, 277 or 480 VAC, selectable.
Maximum Sensing Range: 700VAC.
Nominal Frequency Range: 50-400 Hz.
Contact Form: 1 form C (SPDT) for undervoltage and 1 form C (SPDT) for
overvoltage.
Time Delay Adjustment: 0.5 to 10 sec.
Sense Voltage:
Voltage (nominal)
120
208
277
480
UV Adjustment Range
72-120
125-208 166-277 288-480
OV Adjustment Range
120-168 208-291 277-388 480-672
Control Voltage:
Model WD2759
-001
-002
-003
Input Voltage (VDC)
18 to 54
13.5 to 32
100 to 200
Input Voltage (VAC)
–
100 to 140
WD2759-003.
Our authorized distributor is more likely to stock these items.
Ordering Information
Typical Part Number
B
WD 2759 -002
1. Basic Series:
WD = DIN mount Protective Relay.
2. Type:
2759 = Over/Undervoltage Relay.
3. Control Voltage:
001 = 18 to 54VDC
002 = 13.5 to 32 VDC
003 = 100-200VDC or 100-140VAC.
WD2759 Controls
WD2759 Typical Hookup
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