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The main malfunctions of the generator

The main malfunctions of the generator

 

  •  There is no voltage and the generator works without a load, (for one of the following reasons)

- AVR circuit fuse is damaged

- The presence of shorts in the circle of unification mounted on the X

- Separation or shorts with auxiliary fixed body coils

- Separation of the auxiliary coils feeding the AVR circuit

- Loss of residual magnetism (for modern generators that do not need external DC power)

- Generator speed is low

- Separation in the secondary coil of the control transformer


  • The generator voltage is low and it works without load (for one of the following reasons)

- Damage to the unification circuit installed on the Ax

- Generator speed is low

The air gap of the control adapter is very small

- Decreased file isolation


  •  The generator voltage is high and it works without load, (for one of the following reasons)

- The presence of shorts in the secondary coil of the control transformer

- Generator speed is high

The air gap of the control transformer is large


  •  The generator voltage drops when loading, (this is for one of the following reasons)

The load is greater than the generator capacity

- Double diesel engine

Decreased isolation of auxiliary or main body coils


  •  The generator voltage is not fixed (wobbly), (due to one of the following reasons)

The generator speed is not fixed

- The terminals of the control circuit are not good (Bad contact)


  •  Overheating of the generator (for one of the following reasons)

- Overload

- Cooling air passages are not clean, covered with dust

Decreased file isolation.


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