A standby generator is only useful if it starts and takes the load when the grid fails. ATS panels, governors and AVRs need regular checks just like the engine.
Many long outages are caused not by the engine but by an automatic transfer switch (ATS) or control system that fails to act. Regular checks make sure the whole system is ready.
ATS panel
- Inspect contacts, switching mechanism, coils and interlocks.
- Verify start delay, transfer, retransfer and cool-down timer settings.
- Clean, re-torque terminals and check busbar temperatures.
Controller, governor and AVR
Check the genset controller (alarms, shutdowns, fault history), electronic governor and automatic voltage regulator. Frequency or voltage swings under changing load mean adjustment is needed.
Batteries and charger
Weak batteries are the top reason generators fail to start. Measure voltage, check the charger and terminals.
Load testing
Regularly simulate a mains failure to test the full sequence: start – transfer – retransfer. Long no-load running does not show the real condition.
TTT offers complete generator maintenance and parts such as the EFC electronic governor.
Need advice or a quote? Send the part number or a photo of the nameplate through our quote form or call 0909 580 181 – TTT engineers reply within the working day.
