Generator Load Bank Test Requirements

The equipment used to conduct a load bank test produces artificial loads on the generator by bringing the engine to an appropriate operating temperature and pressure level.

Generator load bank test requirements.

It verifies that all primary components of the generator set are in proper working condition. The frequency schedule for load bank testing on a generator often depends on how the generator is classified and what it is a standby for. This standard contains requirements covering the performance of emergency and standby power systems providing an alternate source of electrical power to loads in buildings and facilities in the event that the primary power source fails. 1 1 1 power systems covered in this standard include power sources transfer equipment controls supervisory equipment and all related electrical.

Step load the generator with the load bank until the desired load is reached. Start and run the generator until the water temperature stabilizes. Remove the load bank load first after the test. 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.

Can the generator load bank test be combined to meet the 36 month test as well as the 4 hour load test. The purpose of these tests are to periodically verify the function of the system against the standard. Any examples are for illustrative purposes only. At 25 of the nameplate kilowatt rating for 30 minutes.

In addition to routine maintenance you ll also need to conduct ongoing operational tests of your epss. Ongoing requirements according to nfpa 110 chapter 8. 6 4 4 1 1 2 specifies that the 10 second criterion does not apply during the monthly testing of the generator. 2 in lieu of nfpa 110 5 13 2 3 h i hook up the dry type load bank to generator and perform a stepped load test on the generator at 25 50 80 and 100 of the nameplate kw rating of the generator.

Load bank testing for two continuous hours each year. During this two hour period the unit should be operated as follows. The testing for an annual load bank test and the triennial exercise may be combined according to nfpa 110 2010. A generator load bank test involves an examination and assessment of a genset.

Transfer all manual or automatic transfer switches to the emergency source. 8 2 4 3 if a generator fails the monthly test it should be operated under a load supplied by a load bank i e. For example if a generator is used as a backup for services associated with loss of life or serious injury such as in a hospital setting the testing requirements are much more frequent.