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AC Motors
Magnetic Starters
Phase Converters


When electrical power fails, itís no small matter. Repairs must be made as quickly as possible. Thatís where Clark Fowler Electric Motors & Supplies excels. Fast turn arounds are our business. Motors such as the one pictured here have been rewound quickly and efficiently for our customers.

Digital Surge Testing

Surge testing of A/C electric motors and generator windings displays a accurate picture of the winding and insulation conditions. Tests made can determine good, marginal or defective windings and the winding insulation before a major failure occurs. In many cases actions can be taken to head off these failures, preventing costly delays and repairs. This digital surge tester applies a predetermined voltage and captures a sinusoidal wave form for each phase of the unit under going the test. It also displays megohms and Hi-Pot measurements. All the information is used to make the correct decision on what repairs are needed.

This is a Surge Test:

The wave form showing a good winding. You will notice how each of the three phases overlap each other. Representing what appears to be only one wave line. Pictured is the windings that are being tested, no faults are present.

Turn to Turn / Phase to Phase Weakness:

If there is a Turn to Turn / Phase to Phase weakness The wave patterns will separate and appear unstable This is an indication of imminent failure. The motor should be serviced immediately. Pictured is a turn to Turn / phase to phase fault.

Ground Faults:

If there is weak insulation the wave pattern will indicate the weakness. If a motor with a turn to turn fault short stays in service circulating currents may produce hot spots and the ground wall insulation will eventually burn up causing a shut down. Pictured is a ground fault.


Stripping ovens are an integral part in the repair process. Water injection temperature controlled burning of electric motor & generator stators alleviate the damage caused if the oven has a thermal runaway, simply put the water injection system keeps the temperature at the preset levels overcoming the potential of lamination core iron damage due to extreme temperatures, in some cases up to 1500 deg. F in the stator core can be reached.