Load Bank Testing

Load Bank Testing

Load Bank Testing Services

Where there are critical standby or life-safety back up Generator systems, a load bank is critical to ensure the reliability of these systems. Although the concept of a load bank as an artificial electrical load is relatively straightforward, consideration must be given to the detailed needs of the site when load banks are specified and installed.

Why Load Banks?

The only way to verify that a backup power system will perform during an outage is to periodically test it under load. Both generators and UPSs may appear to run fine when lightly loaded, but may fail to deliver full load power if they are not regularly tested to ensure they are up to the task.

Diesel generators are susceptible to a condition known as wet stacking when operated at light loads for extended periods. Wet stacking occurs when carbon or unburned fuel oil accumulates on the injectors, on the exhaust valves, or in the exhaust system. Readily observable as bellowing black smoke or spits of oil spitting from the exhaust (engine slobber), the generator output will be reduced as combustion gasses leak past the valves. Permanent damage due to cylinder scarring is also possible. Fortunately, the condition is usually corrected rather easily by running the engine for an hour or so under sufficient load—typically 80% to 100% of the rated load—to bring the engine to nominal operating temperature and burn off the deposits. Load banks are usually required to achieve this load if normal building load is not sufficient.

Contact us now to book in your Load Bank Test.

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