The Iris Power DCR 60 is a simple off-line DC tester to identify problems in the stator ground wall insulation system generators and motors before an unexpected in-service failure occurs. Unlike the pass or fail of a DC or AC hi-pot test, the DC ramp test gives diagnostic information and can be stopped before a failure occurs.Download Brochure
An automatically ramped or manually stepped direct voltage (up to 60 kV) is applied to the stator winding and the resulting current is measured and plotted against voltage. Examination of the current versus voltage curve allows assessment of stator insulation condition, as well as diagnosis of damage, defects, and deterioration mechanisms. The DCR-50 allows tests to be performed in accordance with IEEE Std 95-2002.
The test results are repeatable and accurate. This test can frequently identify stator insulation windings that are approaching failure, without accelerating the deterioration process. It can take less than an hour to perform. The DC Ramp Test method has been proven for motor and generator insulation testing for many years by the US Bureau of Reclamation and others. It is applicable to asphalt, polyester and epoxy-mica insulation systems.
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