Avr Troubleshooting

WIN-S

Troubleshooting of Automatic Voltage Regulation System

WIN-S Check symptoms of Failure & Sequence of Alarms

Voltage Built up Failure Overvoltage Voltage Hunting

WIN-S Voltage Builtup Failure

X X

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Check Input to AVR

Check Ex On Interlock

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Check AVR Power Supply

Check Power Supply PT

Start Prev Step

X

Voltage Built Up

X

√

Next 1 Page

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Check for Actual Value Measuring Fault

Reason Identified

WIN-S Prev 1 Page

√

Carry out Field Flashing

Check Residual Voltage *

Check Output From AVR

X

Start Prev Step

X

X

√

Check Other External Connections & Alternator

Carry out Lamp Test Replace / Readjust AVR

Voltage Built Up

√

Reason Identified

WIN-S Check symptoms of Failure & Sequence of Alarms

Voltage Built Up Failure Overvoltage Voltage Hunting

WIN-S Overvoltage

X

Check Feedback PT

Check C/O from field Flashing To AVR *

X X

√

Connections To Field

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Carry out Lamp Test √ Replace / Readjust AVR

X Start Prev Step

No O/V

√

Reason Identified

WIN-S Check symptoms of Failure & Sequence of Alarms

Voltage Built Up Failure Overvoltage Voltage Hunting

WIN-S Voltage Hunting

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Hunting (Specific Mode)

X Check respective wiring

√

In Droop Mode In VDC Mode

Hunting Intermittently

In pf / VAR Mode

X Start Prev Step

X

Adjust Programming Engine Running

√

Reason Identified