Generator Load Bank Test Requirements

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.

Generator load bank test requirements. The only compliance reason you would be performing the load bank exercise is if the engine was less than 30 loaded during the monthly tests. Load bank testing for two continuous hours each year. Start and run the generator until the water temperature stabilizes. 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 testing for an annual load bank test and the triennial exercise may be combined according to nfpa 110 2010. 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. Any examples are for illustrative purposes only.

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. Step load the generator with the load bank until the desired load is reached. It verifies that all primary components of the generator set are in proper working condition.

At 25 of the nameplate kilowatt rating for 30 minutes. A generator load bank test involves an examination and assessment of a genset. 8 4 2 3 has special requirements for diesel generators that can t meet the minimum exhaust temps or 30 load requirements. During this two hour period the unit should be operated as follows.

Transfer all manual or automatic transfer switches to the emergency source. During an annual load bank test you might not want to hit the engine with a block load to which the engine may not be accustomed which could damage the engine. Remove the load bank load first after the test. A load bank can be connected to the generator to get above the 30 requirement.

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. Each step to last fifteen 15 minutes record engine and generator data as detailed later in this section. 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.