Woodward — UG Dial Speed Droop Adjustment
Adjustments · Governor droop
From a Woodward service manual — check it applies to your exact model before use.
Procedure
- For units running alone, set droop at zero (isochronous operation).
- For ac generating units tied in with other units, set droop from reference number 30 to 50 on the governor reference dial.
- Increase droop to resist picking up or dropping off load; decrease droop to facilitate picking up or dropping off load.
- To adjust system frequency, operate the SPEED SETTING knob on the front panel of the governor with zero droop.
- To distribute load between units, operate the SPEED SETTINGS of the governors that have speed droop.
- For generator sets operating in parallel, set zero droop on the lead unit and droop on the slave unit.
- When units are going against an infinite bus, make sure that governors are in droop.
Specs & values
- If the governor output shaft does not use the full 30 degrees of available travel from NO LOAD to FULL LOAD, the effective droop will be reduced proportionately.
Source: Woodward 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.