Basler — Initial Operation - Single Unit (No Load)
Operation · Voltage regulator
From a Basler service manual — check it applies to your exact model before use.
Before you start
- To avoid high voltage arcing, the field circuit must never be opened during operation.
- A shutdown circuit using field discharge resistors in the exciter field circuit should not be used.
Procedure
- Start prime mover and bring up to rated speed.
- If voltage shutdown switch is used, close switch to apply excitation.
- Verify generator voltage.
- If overvoltage (+20% or more), open shutdown switch immediately and/or stop prime mover.
- If no voltage build up, field flashing may be required.
- If undervoltage (-15% or more), stop prime mover and determine cause.
- If voltage builds up and collapses, stop prime mover and determine cause.
- If oscillating voltage (hunting), refer to troubleshooting.
- If voltage unstable, loosen locking nut on R4 and rotate clockwise approximately 30° beyond stable point.
- Tighten lock nut on R4.
- To adjust voltage range for ±10%, verify R1 at center of travel.
- Loosen locking nut on R3 and adjust to rated generator voltage.
- Tighten lock nut on R3.
- Apply load to generator.
- Verify voltage regulation within ±1/2%.
Specs & values
- Voltage regulation within ±1/2%
- R3 provides R1 adjustment range of ±10% of rated
Source: Basler 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.