Chapter 6—Motor Protection148 Power Xpert C445 Global Motor Management Relay MN042003EN—October 2016 www.eaton.comHigh PowerThe High Power protection monitors the kW consumed(supply side) by the load and will trip the motor if themeasured value exceeds the set threshold. The High Powerprotection is active when the motor is in the Running state.The rated power is calculated from the rated HP input bythe user.Table 53. High PowerPeak Demand AlarmingA utility company’s bill is based on consumption (kWHr) andmore typically on peak demand in the last month. In the USdemand is typically calculated as the average kW in a 15minute window. The peak demand is simply the maximumvalue of the calculated demand. Industrial users may haverather sophisticated load shedding and demand responseprocesses running at the feeder level or higher.The C445 will provide a simplified demand warning systemthat will provide the current demand estimate, a resettablepeak demand (with date and time stamp) stored innonvolatile memory, and a demand warning threshold. Thetime window for demand calculation will be adjustable toprovide for more flexibility.Table 54. Peak DemandFaultCode ModbusFault Action Delay (Seconds)Protection Action Units Min. Max. Default Min. Max. Default Modbus15 High Power Fault Trip 1046 % –200 200 110 1 60 20 1048Fault Warning 1047 % –200 200 110 1 60 2 1079FaultCode ModbusFault ActionProtection Parameter Units Min. Max. DefaultPeak Demand Demand Window Duration 1054 Minutes 1 240 15Peak Demand Warning Threshold 1052 Watts 0Peak Demand WattsPresent Demand WattsDemand Timestamp Unix
