Powertech’s High Voltage Laboratory is the largest test lab on the west coast of North America. The lab is capable of providing high-voltage tests at voltages up to 1600 kV AC, 3 MV impulse, and 1 MV DC.

Facilities comprise an indoor lab, clean fog  pollution test chamber, salt fog pollution test chamber, two-acre outdoor test area, and a 500-kV 180 m Inverted Delta transmission line.

The indoor labs include a high-voltage lab and a medium-voltage lab, which are furnished with state-of-the-art equipment for measurements such as partial discharge, RIV, tan delta, and electrical properties of materials.

Main test equipment:

Testing Capabilities

Test Type

Nominal Rating (kV)

High Voltage AC


High Voltage DC


Impulse Testing


3 Phase AC feeder