Function:

23

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The relay will energize at normal voltage condi-

tions. The normally open contacts will close, and

the normally closed contacts will open. The relay

will de-energize during over or undervoltage

conditions. Reset is automatic when the voltage

returns to normal.

Voltage Sensitive Relays

PRODUCT SPECIFICATIONS

Sample Part No.

WOUV-12DC-A

Type:

WOUV - Over/Undervoltage

Line Voltage VDC

12DC

18DC

24DC

28DC

32DC

48DC

60DC

120DC

Options:

Blank - Standard

A = 2 Form A Contacts

B = 2 Form B Contacts

H = 125 VDC Contacts

P = Transient Protection

momentary voltage surges of twice the nominal rated

input voltage (standard).

which complies with the requirements of ANSI/IEEE

C37.90-1978

Consult factory for additional models.

Notes:

1.

Remove black screws for access to the O/V and U/V trip adjustment.

2.

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

3.

The adjustments are by means of a single turn potentiometer. Use a small screwdriver and

do not force beyond the limit stops.

PART NUMBER SELECTION

Part Number

Nominal Voltage (

±10%) .................

Drop-out Point (u/v models) ...........

Pick-Up Point (o/v models) .............

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

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

Operating Temperature Range ........

Temperature Effects .........................

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

Time Delay ........................................

WOUV

12 VDC to 560 VDC

70-100% of nominal voltage, screwdriver adjustable

100-125% of nominal voltage, screwdriver adjustable

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

5 amp resistive at 120 VAC or 28 VDC

-40

°C to +75°C

Less than 1% voltage drift over the temperature range.

12 to 60 VDC models: 1 W max.

120 to 305 VDC models: 2 W max.

405 to 470 VDC models: 3 W max.

560 VDC Model: 4 W max.

A short duration delay is provided to prevent nuisance

tripping due to momentary dips or surges in voltage.

The drop-out delay, following a voltage fault is 75 to

100 milliseconds

125DC

240DC

250DC

305DC

405DC

430DC

470DC

560DC

Drop-Out Time Delay WOUV...DC Series

0

20

40

60

80

100

120

140

160

180

0

20

40

60

80

100

120

140

Time Delay (msec)

(+)

(-)

13/64" DIA.

4 MTG. HOLES

3 1/2

2 13/16

2.0

2

3/4

3

1/2

TERMINAL

STRIPS

#6 -

32

SCREWS

WILMAR™ Protective Relays – WOUV DC Series, Over/Undervoltage

Drop-Out Time Delay,

WOUV DC Series

Trip Setting:

O/V - 110%

U/V - 90%