Westinghouse 30-471 (E) warranty Adjustments, Undervoltage Module, Overvoltage Module

Instruction Leaflet

30-471 (E)

Page 9

Adjustments

Timer and frequency modules can be adjusted as per module front plate. Voltage sensing modules can be adjusted as follows:

Undervoltage Module

Set Description

1Set Dropout knob maximum Counter-clockwise

2Set pick-up knob maximum Counter-clockwise

3Increase line volts to desired Dropout value (normally 70%) LED should be “ON”

4Rotate Dropout Clockwise until LED goes “OFF”

5Rotate Pick-up to maximum Clockwise LED is “OFF”

6Increase line volts to desired Pick-up value (normally 90%) LED is “OFF”

7Rotate Pick-up knob Counter-clockwise until LED comes “ON”

8Re-check Pick-up and Drop-out by running voltage up and down check by LED indication.

Overvoltage Module

Step Description

1Set Dropout to maximum Counterclockwise

2Set Pick-up to maximum Counterclockwise

3Set line voltage to pull in value desired (normally 105%) LED is “OFF”

4Rotate Pick-up Clockwise until LED comes “ON”

5Rotate Dropout maximum Clockwise

6Set line voltage to Dropout value desired (normally 15%)

7Rotate Dropout Counterclockwise until LED is “OFF”

8Drop line voltage to pull-in desired value. LED should come “ON”

9Increase line voltage to desired Dropout value. LED should go “OFF”

DT and DTM Time Delay Relays Option #32A, 32B

Ratings - 6 Watts Power Consumption Input coil Voltage - 120 volts

Contact Rating - 3 amperes at 220 volts Ac 50/60 Hertz Operating Temperature Rating - -10oC to +50oC

Time Ratings - Various available

The relay is incorporated in the control scheme to stop the transfer switch with both breakers open. This is to allow residual load voltage to decay prior to closing on another supply which could be out of phase. When the timing cycle is complete, the relay re-initiates transfer to the available source.

Time Delay Engine Starting Relay

Solid State Type Option #2A

Ratings - 1.2 Watts Power Consumption

Input coil voltage - 120 volts at 50/60 Hertz.

Contact Rating - 10 amperes resistive at 120 volts

Time Range - 2 to 3 seconds - nonadjustable.

Operating Temperature Range - -10oC to +55oC.

Pneumatic Type Option #2B

Rating - 8 Watts Power Consumption

Input Coil Voltage - 120 volts 50/60 Hertz.

Contact Rating - 10 amperes resistive at 120 volts Ac. Time Ranges - Various available.

Operating Temperature Range - -30oC to +75oC.