表1　继电器的常用电气文字符号
类别代号名称英文名称
继KAN有或无继电器All-or-nothingrelay
电KA中间继电器Auxiliaryrelay
器KE电气继电器Electricalrelay
KEM机电继电器Electromechanicalrelay
KEM电磁继电器Electromagneticrelay
KS静态继电器Staticrelay
KS固体继电器Solid-staterelay

KM单稳态继电器Monostablerelay
KB双稳态继电器Bistablerelay
KP极化继电器Polarizedrelay
KNP非极化继电器Non-polarizedrelay
KR簧片继电器Reedrelay
KT时间继电器Timerelay
KOD动作延时继电器On-delayrelay
KFD释放延时继电器Off-delayrelay
KI间隔定时继电器Intervalrelay
KF闪光继电器Flasherrelay
KSG信号继电器Signalrelay
KST启动继电器Startingrelay
KPL脉冲继电器Pulserelay
KMI脉冲激励间隔定时继电器Making–pulseintervalrelay
KBI脉冲去激励间隔定时继电器Breaking-pulseintervalrelay
KT星-三角时间继电器Star-deltatimerelay
KT串联负载时间继电器Loadseriestimerelay
KSMT累加时间继电器Summationtimerelay
KMT保持式时间继电器Maintainedtimerelay
KB闭锁继电器Blockingrelay
KC合闸继电器Closingrelay
KCP合闸位置继电器Closing-positionrelay
KT跳闸继电器Trippingrelay
KTP跳闸位置继电器Tripping-positionrelay
BM量度继电器Measuringrelay
BC电流继电器Currentrelay
BV电压继电器Voltagerelay
BPW功率继电器Powerrelay
BF频率继电器Frequencyrelay
BPS压力继电器Pressurerelay
BR电抗继电器Reactancerelay
BI阻抗继电器Impedancerelay
BTE电热继电器Thermalelectricalrelay

BTM温度继电器Temperaturerelay
BSC突变继电器Sudden-changerelay
BG气体继电器Gasrelay
BPC比率继电器Percentagerelay
BP保护继电器Protectionrelay
BDF差动继电器Differentialrelay
BDR方向继电器Directionalrelay
BDS距离继电器Distancerelay

PE保护装置Protectionequipment
PS保护系统Protectionsystem
UP单元保护Unitprotection
NP非单元保护Non-unitprotection
PSP分相保护Phasesegregatedprotection
NSP不分相保护Non-phasesegregatedprotection
保MP主保护Mainprotection
护BUP后备保护Back-upprotection
及CLBP电路近后备保护Circuitlocalbackupprotection
保SLBP变电站近后备保护Substationlocalbackupprotection
护RBP远后备保护Remotebackupprotection
装BFP断路器失灵保护Breakerfailureprotection
置STP备用保护Standbyprotection
ISP瞬时保护Instantaneousprotection
DLP延时保护Delayedprotection
DRP方向保护Directionalprotection
DCP方向比较保护Directionalcomparisonprotection
DEP接地方向保护Directionalearth-faultprotection
PDP功率方向保护Powerdirectionalprotection
PP纵联保护Pilotprotection
PWP导引线保护Pilotwireprotection
PLCP电力线载波保护Power-line-carrierprotection
MLP微波纵联保护Microwavelinkprotection
OLP光纤纵联保护Opticallinkprotection