Function:

24

Tyco Electronics / www.tycoelectronics.com / Factory Direct Technical Support: 800-253-4560, ext. 2023 (U.S., Canada, Mexico) or 805-220-2020, ext. 2023 (International)

Voltage sensitive relays are available for both AC

and DC applications for overvoltage and undervoltage

protection.

Combination over/undervoltage relays

provide band-pass capabilities. AC relays are either

single or three-phase type. Three phase relays are

designed to sense the average of the three phases.

Voltage trip points are screwdriver adjustable, and

operation is time-delayed so that momentary volt-

age transients will not cause nuisance tripping.

Operation:

The relay will energize at normal voltage condition.

The normally closed contact (Form B) will open and

the normally open (Form A) will close. The relay will

de-energize after time delay when over or undervoltage

condition is reached.

Voltage Sensitive Relays

PRODUCT SPECIFICATIONS

Sample Part No.

WOUVT -1-120AC

Type:

WOUVT - Over/Undervoltage

No. Phases

1 = Single

3 = Three (line to line)

Line Voltage VAC

115

120

200

208

220

230

240

380

Options:

Blank - Standard

A = 2 Form A Contacts

B = 2 Form B Contacts

H = 125 VDC Contacts

P = Transient Protection

125VDC.

complies with the requirements of ANSI/IEEE C37.90-

1978

Consult factory for additional models.

Notes:

1. Remove black screw for access to the voltage trip and time delay adjustment potentiometer.

2. Clockwise rotation of the voltage adjustment potentiometer will raise the voltage trip point.

3. Clockwise rotation of the time adjustment potentiometer will increase the drop-out time delay.

PART NUMBER SELECTION

Part Number

Nominal Voltage ...............................

Phase ................................................

Line Frequency .................................

Type of Sensing ...............................

Undervoltage Trip ............................

Overvoltage Trip ...............................

Drop-out Time Delay ........................

Pick-up to Drop-out Differential ......

Output Contacts ...............................

Contact Ratings ................................

Operating Temperature Range ........

Power Consumption ........................

WOUVT

120 VAC to 575 VAC

Single or Three

50-400 Hz

Average of all three phases

70-100% of nominal voltage, screwdriver adjustable

100-125% of nominal voltage, screwdriver adjustable

0.5 to 20 seconds, screwdriver adjustable

2% maximum

One set N.O., One set N.C.

5 amp resistive at 120 VAC or 28 VDC

-40

°C to +70°C

4 VA maximum

400

416

440

460

480

525

575

11

4 MTG. HOLES

3.0

TERMINAL STRIP

#6 - 32 SCREWS

3

1

4

1

27/59

WILMAR™ Protective Relays – WOUVT Series, Over/Undervoltage