Aurora Generators — Operational Checks
Testing & diagnosis · ATS contactor, generator voltage regulator
From a Aurora Generators service manual covering: EGSC100ASE, EGSC200ASE, EGSC400ASE, EGSCA100ASE, EGSCA200ASE, EGSCA400ASE. Check it applies to your exact model before use.
Browse Aurora Generators generators & specs →
Before you start
- This will simulate an interruption of the utility power source.
Procedure
- Open the service entrance disconnect circuit breaker originally closed to simulate an interruption of the utility power source.
- After a time delay (based on the generator settings), the standby generator engine will start.
- Use a voltmeter to measure line-to-line and line-to-neutral voltages across the generator line terminals; adjust the voltage regulator if necessary.
- ATS Time Delay Normal (Utility) to Emergency (Generator) (TDNE) begins timing; after time out the contactor switches from UTILITY to GENERATOR.
- Close the service entrance disconnect circuit breaker.
- ATS Time Delay Emergency (Generator) to Normal (Utility) (TDEN) timer begins; the contactor switches from GENERATOR to UTILITY and the generator will shut down after a cool down period.
Tools required
- Voltmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Aurora Generators service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.