Generator Load Bank Testing Procedure

Transfer all manual or automatic transfer switches to the emergency source.

Generator load bank testing procedure.

Perform a stepped load bank test. Check all fluids level in the generator. If a generator fails the monthly test it should be operated under a load supplied by a load bank i e. Make sure that the fuel tank is full the oil level is correct and the radiator or coolant tank is full if it is a water cooled generator.

Standard load bank testing procedure the following is the basic step by step procedure for performing load bank testing on a generator set by utilizing a portable resistive load bank unit. The recommended procedure to follow for the load bank test would be to. Step load the generator with the load bank until the desired load is reached. Transfer all manual or automatic transfer switches to the emergency source.

1 volts and amps on each phase voltage unbalance between phases shall. When combining both tests for diesel powered eps the first three hours of the test is required to be not less than 30 of the emergency generator nameplate kw rating or the minimum exhaust gas temperature. 1 apply load in steps used for generator sizing design consultant specify. Start the generator and allow it to reach the normal temperature.

As a minimum the following shall be observed and recorded at 25 50 80 and 100 stepped load during testing of diesel generators on site. O engine exhaust temperature during test if applicable p kw load under test q identification of unsatisfactory conditions and corrective action taken including parts replaced note. The last hour cannot be less than 75 of the emergency generator nameplate kw rating for a total of 4 continuous hours. Load bank testing for two continuous hours each year.

The generator is then step loaded with the load bank until the desired load level is reached. Run at 80 of rating with 100 verification or as described in service agreement. After the test the technician removes the load bank load first and transfers all switches back to the normal position before allowing the generator to cool down according to manufacturer guidelines. During this two hour period the unit should be operated as follows.

Duration of actual test varies based on type of test nfpa 110 and customer preference. 6 4 4 1 1 2 specifies that the 10 second criterion does not apply during the monthly testing of the generator. Start and run the generator until the water temperature stabilizes. At 50 of the nameplate kilowatt rating for 30 minutes.

The recommended procedure to follow for the load bank test would be to start and run the generator until the water temperature stabilizes. At 25 of the nameplate kilowatt rating for 30 minutes. Load bank testing is a standard part of our preventative maintenance service agreements and is accomplished without any interruption to facility operations.