MODEL AT-8100 STATIC EXCITER GROUND FAULT DETECTION
■Accumetrics’ Ground Fault Detection (GFD) system provides statically excited field ground fault detection technology. Building on the success of the Accumetrics’ Earth Fault Resistance Monitoring (EFREM) products for brushless generator designs, the GFD system provides continuous on-line monitoring for brushed style excitation generators and motors.
■Conventional field ground detectors may detect the occurrence of faults but provide no advance warning or indication of the fault’s severity. In fact, the severity at the detection threshold may vary by several orders of magnitude, depending on fault location. Now, by combining 16-bit digital measurement technology with the most sophisticated technique available for generator ground fault measurements, Accumetrics overcomes these limitations with the GFD - Static Exciter.
■Measurement of actual resistance allows users to monitor trends over time and track the progression of ground faults from their onset. This provides an early warning of impending failure and allows for predictive maintenance of a machine. Ground fault severity data can be used to make operational and maintenance decisions. In addition, the technique yields a location factor, which indicates where the fault occurs along the length of the field winding.
■Continuous on-line monitoring of faults –while rotating or at standstill
■Trending of fault severity resistance
■Indication of fault location for ease of diagnosis and repair
■Ongoing monitoring of field excitation voltage
■Alarm relay contact outputs for multiple resistance limits
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[ large generators ][ motors ] |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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DS-0170 |
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775 KB |
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