The generator is not used for a long time, resulting in the loss of residual magnetism contained in the iron core before leaving the factory, and the excitation coil cannot establish the necessary magnetic field. At this time, the engine runs normally but cannot generate electricity. There are many new or long-term unused units in this phenomenon. Solution:1. Press the excitation button once;2. If there is no excitation button, magnetize it with an electric battery;3. With a light bulb load, run at overspeed for a few seconds.

The load is carried in the sequence from high to low.

Unload in the sequence from low to high, and finally shut it down.

The generator set has 4 outgoing lines, of which 3 are live wires and 1 is neutral wire. The voltage between live wires is 380V, and the voltage between live wires is 220V.

A direct short circuit between live wires without any load is a three-phase short circuit. The consequences are very frightening, and in severe cases, it can lead to machine damage and human death.

1. UPS is generally expressed as apparent power KVA, which is first multiplied by 0.8 to convert it into a unit of KW that is consistent with the active power of the generator.2. If a general generator is used, the power of the allocated generator is determined by multiplying the active power of the UPS by 2, that is, the generator power is twice the power of the UPS.3. If a generator with PMG (permanent magnet excitation) is used, the power of the generator is determined by multiplying the power of the UPS by 1.2, which is 1.2 times the power of the UPS

The Alternator.

The alternator.