Load Bank Testing

Generator Load Bank Testing
Generator load bank testing ensures that your backup power system is ready to perform for an emergency.

Power Systems Plus Inc. can perform a load test on various sizes of generators up to 1500 kW. A load test is recommended to be performed annually and is a test that verifies the functionality of the generator under load. This test also clears out carbon deposits that build up in the exhaust and can result in the engine malfunctioning. A written report will be provided upon completion of each test.

We recommend a one and a half hour load test per year, per unit to properly maintain your generators. The NFPA 110 requires a load bank test be performed annually. The NFPA Code requires specific load bank testing for emergency units that service critical areas such as hospitals, care facilities and centers that provide life safety. Every three years a four hour load test is required to be in compliance for those Level 1 units. To find out what your requirements are check out our Guide to Understanding NFPA 110 (to be added soon, in the meantime, please contact us).

Load Tests are typically performed at the time of the annual or semi-annual service. These tests require set up of the load bank with cable connections to the generator or transfer switch depending on your configuration. The load test provides a resistive load to the generator. The technician starts the test with a low load and increases the load every 15 minutes until the nameplate capacity is reached. Readings are taken at each step and recorded on our load test form. The unit should be capable of reaching and holding the load. Reaching the max load on the unit also cleans the fuel and exhaust system. Just running the unit actually creates carbon deposits in the exhaust from not completely burned fuel that can cause low performance and valve failure.

Generator Load Test Rates

1 Hour load test plus set up and tear down of load bank.

1 kW – 100 kW..………………………………………………$325
101 kW – 300 kW…………………………………………….$400
301 kW – 500 kW*…………………………………………..$475
501 kW – 1000 kW*…………………………………………$550

1.5 Hour load test plus set up and tear down of load bank.

1 kW – 100 kW..……………………………………………….$425
101 kW – 300 kW……………………………………………..$500
301 kW – 500 kW*……………………………………………$575
501 kW – 1000 kW*…………………………………………..$650

4 Hour load test plus set up and tear down of load bank.

1 kW – 100 kW….………………………………………………$925
101 kW – 300 kW………………………………………………$1000
301 kW – 500 kW*…………………………………………….$1075
501 kW – 1000 kW*…………………………………………..$1150

*For every additional hour of load testing add $200.00

*For generators over 300kW that are 208 volts a special quote is required.

*For generators larger than 1000kW, please contact us for an estimate.

*Prices updated 11/1/19