Testing Procedures

Feyen Zylstra provides customized preventive maintenance programs to keep your electrical systems running smoothly. We have a variety of testing procedures at our disposal to collect data and perform diagnostics as necessary.

Power Quality Metering

Power quality metering is a technique that, when applied by a trained Feyen Zylstra electrician, collects information about:
• electrical consumption
• power quality data
• total energy use
• trending
• harmonics
• transients

This data is collected over a set period of time. The comparison relative to time is where the true diagnostic value comes into play. It gives more information than a single instantaneous measurement from a hand meter.

Hi-Pot Testing Procedures

High-potential testing (hi-pot testing) is a technique of loading high D/C voltage onto a cable to determine any faults in the cable insulation.

Hi-pot testing is usually compared with previous readings taken on the same equipment for indication of deterioration in the insulation system. The test can also be applied to new cable, prior to initial energizing, to avoid any surprises at start-up and to establish baseline conditions.

There are several factors that will contribute to insulation resistance, including temperature, moisture content, and surface contaminants.

Infrared Thermography Testing

Infrared thermography is the science of using a special camera to “see” the invisible infrared radiation that is emitted from all objects. In infrared testing, the radiation is converted to specific temperature information and a color digital image. The camera is used to find problem areas in electrical systems, such as weak or dirty connections, an overloaded circuit, or improperly installed equipment.

Feyen Zylstra has an upgraded FLIR ThermaCAM P65 infrared camera that employs the latest technology for the highest quality infrared thermal imagery and more accurate diagnosis.

Megger Testing

• equipment used to locate shorts and faults
• insulation testing for motors and electrical systems

Transformer Oil Testing

• includes dissolved gas-in-oil analysis (DGA)
• analyzes the type and quantity of gases dissolved in the oil
• tests for certain quantities and combinations of gases found in the oil, which can indicate insulation overheating or overloading, liquid overheating, partial discharge (corona), or arcing in the transformer

Switchgear Cleaning & Inspection

• removal of dirt, which increases the resistance and lowers performance
• physical inspection for improper condition or function
• identifies of potential problems before they affect productivity
• exercises electrical switches to ensure optimum performance

For More Information, Contact:

Kevin Wildfong