Backup generators are highly reliable appliances that provide a substitute source of power in the event of an outage. Although you expect the device to function normally, you should conduct occasional load bank tests to ensure that it’s up to the task. Here’s what you should know about this important process.

Your Load Bank Testing Questions Answered

What is load bank testing?

A load bank is a specialty device that is designed to produce an artificial electrical load. In the case of testing a generator, it mimics that appliance’s own operating elements, like its pressure and temperature, to simulate the same conditions that it might experience when the power goes out. The results of the test can reveal whether the generator is safe to use and equipped to meet your power needs or whether it requires repairs.

How does the process work?

First, the technician turns on the generator and waits until its temperature is stable, then checks for any obvious signs of problems, like unusual noises. If there’s an issue at this stage, the test is halted and the problem should be repaired.

The electrical loads are then transferred to the load bank, at which point the technician will check the current in each hot conductor, or leg, using a tool called an ammeter. The voltage must meet a certain number to pass the test; if one leg fails to do so, then the generator fails the load bank test. The technician removes the electrical loads one by one and runs the generator on its own power for approximately an hour.

Why is the process so important?

Homeowners and businesses keep generators on standby to step in when there’s a power outage. In many professional environments, they play a significant role in powering vital appliances and devices, such as in hospitals, data centers, and factories.

Regardless of the purpose, you should confirm that the device works properly. Dealing with a broken-down generator in the midst of an emergency can have dramatic consequences, so take care of any issues before the need for the generator arises.

What type of information does it reveal?

The test results reveal whether or not the generator can supply the amount of power needed. It also checks the pressure levels of the fuel and oil, monitors the control system, and assesses the alternator’s ability to provide the necessary voltage.
 

Clients throughout Fairbanks, AK, trust in the team at Aero Services to perform reliable load bank tests on their generators and other power devices. Serving the community since 1957, this family-owned and -operated motor repair company also services welding machines, pumps, and power tools. Visit the website to find out more, or call (907) 479-6666 to schedule an appointment.