Controller displays “Reverse Power” or similar; generator trips offline when abnormal power flow is detected.

Safety first: This condition is hazardous and can damage equipment or injure utility workers. Immediately shut down the generator and open all breakers connecting it to the electrical system.

Steps:

• Inspect transfer switch: Verify that the Eaton automatic transfer switch mechanically isolates utility and generator sources. Check for welded or stuck contacts.
• Review wiring diagram: Compare actual wiring to the Eaton installation schematic to ensure no unauthorized parallel paths exist.
• Check CT wiring: Inspect current transformer (CT) wiring to the controller for correct polarity and secure connections.
• Professional evaluation: Due to the risk, have a qualified electrician or Eaton service technician correct any wiring or switchgear faults before returning the system to service.