Diesel Generator Troubleshooting Methods

Diesel Generator troubleshooting methods

The main fault phenomenon of the generator is no voltage, low voltage or too high, no load or load voltage drop, and three-phase unbalance. The main procedures for troubleshooting are: check residual magnetism; separate magnetic check windings, AVR, field windings, rectifiers; check AVR performance. For example, the no-load does not build pressure, mainly no remanence, and the three-phase voltage imbalance is mainly caused by the failure of the main winding or the main output cable connection. The voltage is too low, except for the engine speed and other problems, the rectifier is faulty. The specific methods and troubleshooting procedures are described as follows:

Check that all connections are disconnected or loose before performing any troubleshooting steps. First of all, it is necessary to confirm the fault phenomenon, make a specific analysis of the specific type, determine the possible causes, gradually narrow down the fault range, determine the fault point, and implement the exclusion. This section uses Stanford generator as an example and is for reference only. Excitation system failure is relatively easy to malfunction and difficult to handle. The Stanford generator excitation system is indicated by the last digit of the AVR model and generator frame code, and is indicated on the generator nameplate.

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