Commissioning is the cheapest time to find a problem. Acceptance testing confirms that what was installed matches the drawings and the specification, and that the equipment is safe to energize.

When something is already running and misbehaving, we trace it. Power quality analysis looks at voltage, current and harmonics to find what is stressing equipment or tripping it. Transformer turns ratio (TTR) testing checks a transformer's windings and taps, and can show an internal fault before it turns into a failure.

Typical reasons people call

New switchgear or a new transformer is about to be energized.
Equipment trips or runs hot and nobody knows why.
Voltage dips, harmonics or flicker are hurting sensitive loads.