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MiCOM Transformer Applications

MiCOM Protection Relays

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MiCOM Transformer Applications

Easergy™ MiCOM P63x and P64x Transformer Differential Protection and Control Devices are designed for fast, selective, short-circuit protection of transformers, motors, generators and other installations. Models available: • Easergy MiCOM P631 • Easergy MiCOM P632 • Easergy MiCOM P633 • Easergy MiCOM P634 • Easergy MiCOM P642 • Easergy MiCOM P643 • Easergy MiCOM P645 These devices also incorporate many supplementary protective backup functions.

P631 / P632 / P633 / P634 / P642 / P643 / P645

Table 5.41: Functions available for the different models of the Transformer protection MiCOM range of relays ANSI Protection Function P631 P632 P633 P634 P642 P643 P645 24 Overexcitation ● ● ● ● ● ● 46 Negative sequence overcurrent ● ● ● ● ● ● ● 47 Negative sequence over voltage ● ● ● 49 Thermal overload ● ● ● ● ● ● ● 50/51N Ground fault ● ● ● ● ● ● ● 50/51P Phase overcurrent ● ● ● ● ● ● ● 50BF Circuit breaker failure ● ● ● ● ● ● ● 59/27 Under / Over voltage ● ● ● ● ● ● 67N Ground fault directional ● ● ● 67P Phase directional ● ● ● 81 Under / over frequency ● ● ● ● ● ● 87G/64 Restricted ground fault 2 3 3 2 3 3 87T Transformer differential (windings) 2 2 3 4 2 3 3 CTS Current transformer (CT) supervision ● ● ● ● ● ● ● TCS Trip current supervision ● ● ● ● ● ● ● VTS Voltage Transformer (VT) supervision ● ● ● 2nd harmonic restraint ● ● ● ● ● ● ● Overfluxing / 5th harmonic ● ● ● ● ● ● ● Table 5.42: Typical Catalog Numbers Catalog Number Description Basic P64221RABM0B48L Series 40 - Transformer differential (2 sets of CT's) Protection, P642 (48-110Vdc), 1/5A CT inputs, 8In/8Out (user configurable voltage thresholds), 3xRJ-45, IEC61850, DNP3 Standard P64321RABM0B48M Series 40 - Transformer differential (3 sets of CT's) Protection, P643 (48-110Vdc), 1/5A CT inputs, 16In/16Out (user configurable voltage thresholds), 3xRJ-45, IEC61850, DNP3 Advanced P64521RABM0B48M Series 40 - Transformer differential (5 sets of CT's) Protection, P645 (48-110Vdc), 1/5A CT inputs, 16In/16Out (user configurable voltage thresholds), 3xRJ-45, IEC61850, DNP3

5 PROTECTION, CONTROL, AND ENERGYAUTOMATION

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