What should be documented after completing a ground test with a load bank?

What should be documented after completing a ground test with a load bank?

• A. Only the maximum voltage observed.
• B. Only the maximum current observed.
• C. Voltage and current stability during load, balance across phases, and a written test report.
• D. The color of connectors used in the test.

Answer: (C)

The essential thing you’re documenting after a ground test with a load bank is how the system behaves under load and the formal record of that test. You need to record voltage and current stability during the load, show that voltage remains within specified limits as the load is applied and increased, and ensure the current remains within the generator’s and system’s capability without unacceptable spikes or drops. Equally important is confirming balance across phases. A well-balanced load keeps roughly equal current on each phase, which prevents overheating, uneven wear, and extra stress on conductors and equipment. If one phase is significantly heavier, it can lead to premature failures and protection trips. All of this is captured in a written test report. The report should detail the test setup, the load steps and duration, the exact measurements observed (voltages per phase, currents per phase, any phase angle or frequency data), any deviations from specified limits, conditions of the equipment, tolerances used, and the acceptance or rejection decision with conclusions and signatures. This documentation provides traceability, supports maintenance planning, and proves the system performed as required under test conditions.

The essential thing you’re documenting after a ground test with a load bank is how the system behaves under load and the formal record of that test. You need to record voltage and current stability during the load, show that voltage remains within specified limits as the load is applied and increased, and ensure the current remains within the generator’s and system’s capability without unacceptable spikes or drops.

Equally important is confirming balance across phases. A well-balanced load keeps roughly equal current on each phase, which prevents overheating, uneven wear, and extra stress on conductors and equipment. If one phase is significantly heavier, it can lead to premature failures and protection trips.

All of this is captured in a written test report. The report should detail the test setup, the load steps and duration, the exact measurements observed (voltages per phase, currents per phase, any phase angle or frequency data), any deviations from specified limits, conditions of the equipment, tolerances used, and the acceptance or rejection decision with conclusions and signatures. This documentation provides traceability, supports maintenance planning, and proves the system performed as required under test conditions.