Cummins/Onan 2100 Series — Current Transformer (CT) Installation
Installation · Current transformers
For the Cummins/Onan 2100 Series, from the Cummins/Onan service manual.
Applies to: Cummins/Onan DFAB, Cummins/Onan DFAC, Cummins/Onan DFBF, Cummins/Onan DFCB, Cummins/Onan DFCC, Cummins/Onan DFCE, Cummins/Onan DFGB, Cummins/Onan DFGE, Cummins/Onan DFLB, Cummins/Onan DFLC, Cummins/Onan DFLE
Before you start
- Improper CT installation will cause a 1459 Reverse Power shutdown error.
Procedure
- Orient CT dot toward the generator (current into dot).
- CT1 to U leads (A phase), CT2 to V (B), CT3 to W (C).
- Route generator output leads through CTs for 6 lead sets.
- Route load wires through CTs for 12 lead sets.
- Connect CT secondary wire 1 to pin 1.
- Connect wire 2/3 to pin 2 (high voltage) or pin 3 (low voltage).
- Connect CT terminal 2/3 lead to ground.
Full service-parts list: Cummins/Onan DFBF →, Cummins/Onan DFCC →, Cummins/Onan DFCE →, Cummins/Onan DFGB →, Cummins/Onan DFGE →, Cummins/Onan DFLB →, Cummins/Onan DFLC →, Cummins/Onan DFLE →
Source: Cummins/Onan 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.