Generator Load Bank Test Requirements

Load bank testing for two continuous hours each year.

Generator load bank test requirements.

Remove the load bank load first after the test. 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. 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. Any examples are for illustrative purposes only.

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. 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. 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. A generator load bank test involves an examination and assessment of a genset.

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. 6 4 4 1 1 2 specifies that the 10 second criterion does not apply during the monthly testing of the generator. 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. Start and run the generator until the water temperature stabilizes.

It verifies that all primary components of the generator set are in proper working condition. The recommended procedure to follow for the load bank test would be to. Each step to last fifteen 15 minutes record engine and generator data as detailed later in this section. Can the generator load bank test be combined to meet the 36 month test as well as the 4 hour load test.

8 4 2 3 has special requirements for diesel generators that can t meet the minimum exhaust temps or 30 load requirements. 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. 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. Transfer all manual or automatic transfer switches to the emergency source.

Step load the generator with the load bank until the desired load is reached. A load bank can be connected to the generator to get above the 30 requirement. The testing for an annual load bank test and the triennial exercise may be combined according to nfpa 110 2010.