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Electrical Testing for Wind Power Generation

We have extensive experience performing failure analysis of electrical insulation systems for the power generation industry.  We routinely identify the composition of contaminants, check for leak paths, assess bonding conditions, and determine the root causes for premature insulation failures, all of which are critical in the often challenging atmospheric and temperature conditions experienced by wind turbine generators.

Quality Control Testing of Insulation Systems

The integrity of insulation systems must be verified to prevent loss of power generation and catastrophic equipment failure.  Properties including insulation dissipation factor and breakdown voltage, as well as physical and chemical property verification provide the confidence required to install items ranging from end-winding tapes and slot wedging materials, to nacelle insulation systems, especially in the field.

Electrical Testing & Analysis of Insulating Materials

We conduct a range of electrical tests to evaluate the characteristics of plastics, composites (i.e. NEMA LI), tapes, coatings, ceramics and various insulating materials.  Test programs range from standard ASTM test methods to custom designed research programs.  Most tests can be conducted in a temperature-controlled environment ranging from ambient to 300°C.  We offer high-voltage capacity up to 150 kV.

Testing includes:

  • Capacitance
  • Dielectric Breakdown
  • Dielectric Constant
  • Dissipation Factor
  • Dielectric Strength (air or oil)
  • Inductance
  • Surface and Volume Resistivity
  • Megger Testing (up to 100 Tera Ohm range).

Test Methods

We perform ASTM 149, ASTM 150, ASTM D229, ASTM D257, NEMA LI-1 and customer-specific quality control and qualification testing.