High Voltage Cable Multidisciplinary Testing

Advantages of cross-disciplinary analysis

Powertech’s electrical testing labs have facilities for high-voltage, high-power, and high-current testing, as well as in-house access to labs to assist with mechanical, chemical, and materials testing. These labs offer unique capabilities and expertise for cross-disciplinary analysis and provide advantages for customers.

One advantage arises in projects that require across-the-board testing. Insulation condition assessment, for example, may require expertise in electrical, mechanical, chemical, and materials engineering. Powertech can conduct investigations into all aspects of equipment.

Customers may also realize time and cost efficiencies by having equipment undergo several different electrical tests at Powertech labs.

The collocation of Powertech laboratories also means that different tests can be performed efficiently in sequence while mitigating the risks of transportation and setup between tests. This is a typical scenario when testing large, expensive equipment such as switchgear cabinets.

The electrical labs also specialize in integrated test programs in areas such as transmission and distribution cables, stator winding insulation, and metering and protection devices. For example, insulators may undergo dielectric testing in the High Voltage Laboratory and power arc tests in the High Power Laboratory. A combined voltage-current instrument transformer may undergo voltage accuracy, lightning impulse withstand, temperature rise, and short-circuit withstand testing in the High Voltage Laboratory, current accuracy testing in the High Current Laboratory, and fault current testing in the High Power Laboratory.