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Reverse Power/Motoring
The generator is absorbing power from the grid instead of supplying it. This dangerous condition occurs when engine power drops below the power required to overcome system losses, causing the generator to act as a motor.
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Reverse power (motoring) occurs when the generator absorbs power from the grid instead of producing it. This can damage the prime mover and must trigger immediate disconnection.
Typical reverse power trip is set at 5-15% of rated power with a time delay of 2-5 seconds. Settings depend on application and generator characteristics.
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A fault code names a symptom, not a cause. Our engineers have written the diagnostic sequence they use on site for this class of fault — ranked causes, ordered steps with the reading expected at each one, and the point at which to stop and call someone.
10 diagnostic steps · advanced · qualified electrician
10 diagnostic steps · advanced · qualified electrician
8 diagnostic steps · advanced · qualified electrician