![]() ![]() This creates extra stress and increase in temperature across the fault, which increases until the winding fails. They start as energy crossing an insulation fault like moisture, which sets apart at least one turn. Winding defects occurs due to contamination, ageing of insulation, thermal overload, power surges, damaged wire/materials, and other causes. Many diagnostic tools, such as clamp-on ammeters, temperature sensors, a Megger or oscilloscope, can help illuminate these issues. The other 52% of failures are mechanical faults. The 48% can be again divided into rotor problems (12%) and winding problems (36%). The Electric Power Research Institute (EPRI) conducted a survey which brought into the light that, 48% of motor failures are because of electrical failures. Why is Electric Motor Testing Done?Īfter bearing failure, electrical faults are the most common mode of motor failure, so in addition, a properly planned electrical testing scheme is important for making sure of the plant reliability. But smart companies, understands that without proper maintenance programs, there is billions of dollars of lost revenue through increased motor repair costs, downtime, and waste in industrial and commercial companies. Electric Motor Testing is usually the first thing to be sacrificed when cutting back on operational expenses. Electrical maintenance programs are designed to increase equipment promptness and uptime while decreasing capital operating cost. ![]()
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