继电保护代号(全).doc

DEVICECODES(继电保护代号)12AUnitOverspeed机组过速14转子堵转保护20FireinUnit21Impedance(Distance)Protection距离保护21T变压器阻抗保护21/2N光纤纵联距离保护21G机组最小阻抗保护24Over-excitation(VoltsPerHertz)过励磁保护(电压/频率继电器)25SynchCheck同步检查继电器(同期检测)25/79低/过电压保护26-W变压器绕组油温保护26-O变压器油温保护27BusUndervoltage母线低电压27/59Under/OvervoltageRelay低电压/过电压保护286ATransformerTripCircuit1变压器跳闸回路1286BTransformerTripCircuit2变压器跳闸回路230Alarm/Annunciator报警/报警器32逆功率保护32FForwardPower正向功率32RReversePower反向功率33ControlAC/DCPowerSuppliesFail控制回路电源消失37欠电流监视38发电机轴电流保护(通过外接装置实现温度监视)38T1UnitBearingTemperatureHighTrip轴承温度高跳闸38T2BearingOilOvertemperature轴承油温过高38T3BearingSumpOilOvertemperature轴承油箱温度高38V1NDEBearingHorizontalVibrationHigh上导轴承水平振动高38V2NDEBearingVerticalVibrationHigh上导轴承垂直振动高38V3DEBearingHorizontalVibrationHigh下导轴承水平振动高38V4DEBearingVerticalVibrationHigh下导轴承垂直振动高40UnderExcitation失磁保护46NegativeSequenceOvercurrent负序过流保护47相序48ExcessiveStartingTime启动超时(启动时间监视)486ABusZoneProtection1母线保护1486BBusZoneProtection2母线保护249ThermalOverload过负荷电流保护49E励磁变过负荷49T1StatorOvertemperature定子绕组过温49T2StatorHotAirTemperatureHigh定子热空气温度高49T3StatorColdAirTemperatureHigh定子冷空气温度高49T4CoolingWaterTemperatureHigh冷却水温度高49S转子过负荷50InstantaneousOvercurrent瞬时过流保护50/27InadvertentEnergisation低压过流保护50/51/67DefiniteTimeOvercurrentDirectional方向过流保护50/51过电流保护50G/51G零序过流保护50/51E励磁变高压侧过电流保护50/51GNSensitiveEarthFaultProtection灵敏接地故障保护50/51NInstantaneousAndInverseTimeEarthFault瞬态和反时限接地故障保护50BFBreakerF