IEC symbol forms

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AC relay coilK AC · Schematic Active harmonic filterAHF · SLD / Schematic Active-power indicatorkW · SLD / Schematic Active-power transducerP/I · Schematic / SLD Additional cable-core markerHW02 · Schematic Additional circuit-breaker poleCB POLE · SLD / Schematic Additional connector pinX · Schematic Additional fused-switch poleFUSE POLE · SLD / Schematic Adjustable capacitorC ADJ · SLD / Schematic Adjustable-core inductorL ADJ · SLD / Schematic Adjustable-ratio transformerTX ADJ · SLD / Schematic Air circuit breakerACB · SLD / Schematic Alternating bidirectional propagation qualifierQ020503 · Schematic Alternating-current supply qualifierQ020204 · SLD / Schematic AmmeterA · SLD / Schematic Ampere-hour meterAh · SLD / Schematic Antenna symbolANT · GA / Schematic Apparent-energy meterkVAh · SLD / Schematic Arc suppression coilASC · SLD Audible bellHAN1B · Schematic Audible buzzerHAN1Z · Schematic Audible sirenHAN1S · Schematic Automatic mechanical-return indicationQ021207 · Schematic Automatic transfer switchATS · SLD / Schematic Automatic-trip qualifierQ070105 · Schematic BatteryBAT · SLD / Schematic Battery energy storage systemBESS · SLD Battery power conversion systemPCS · SLD Battery rackBR · SLD Battery stringBS · SLD / Schematic Bidirectional active-energy meterkWh · SLD / Schematic Bidirectional breakdown diodeTVS BI · Schematic Bidirectional DC-to-DC converterDC/DC BI · SLD / Schematic Bidirectional inverter-chargerINV/CHG · SLD / Schematic Bidirectional-energy-flow qualifierQ020508 · SLD / Schematic Bolted connecting link, closedX · SLD / Schematic Bolted connecting link, openX · SLD / Schematic Buchholz relayBR · Schematic / SLD BusbarBus · SLD / Schematic Bushing current transformerBCT · SLD / Schematic Busway end feed unitEF · SLD / GA Busway tap-off connectionTO · SLD Bypass-isolation transfer switchBP/ATS · SLD Cable branch jointJ · SLD / GA Cable identification markerHW01 · Schematic Cable screen cross-bondingCB · SLD / Schematic Cable straight-through jointJ · SLD / GA Cable transition jointJ · SLD / GA Cam-operated limit switchLS CAM · Schematic Cam-operation qualifierQ021316 · Schematic Cam-profile indicationQ021317 · Schematic Capacitive proximity switchPROX CAP · Schematic CapacitorC · SLD / Schematic Carbon-disc variable resistorHVR1R8 · Schematic CCTV camera plan symbolCAM · GA Ceiling fan plan markCF · GA Ceiling pull-cord switch plan markSPC · GA Centre-tapped battery bankGB ± · SLD / Schematic Changeover contactCO · Schematic Circuit breakerCB · SLD / Schematic Circuit breaker with electronic trip unitCB ETU · SLD / Schematic Circuit breaker with undervoltage releaseCB UV · SLD / Schematic Circuit-breaker function qualifierQ070102 · SLD / Schematic Clock indicationHIN1P29 · Schematic Closed-transition transfer switchCTTS · SLD Coaxial cableW · Schematic Coaxial cable with earthed outer conductorW · Schematic Coaxial plug and socketX · Schematic Combined instrument transformerCT/VT · SLD / Schematic Combined line and phase voltmeter selectorHSW1S92 · Schematic Combined loudspeaker and microphoneHAN1B8 · Schematic Combined recording wattmeter and varmeterW/var · SLD / Schematic Combined sounder and visual alarm device plan symbolSVAD · GA Compound-excited DC generatorG DC COMP · SLD / Schematic Conductor branching from a groupW · Schematic Conductor count by numeraln · SLD / Schematic Conductor in conduitW · SLD / GA Conductors within one cableW · Schematic Connector changing wire identityHCN1PJ · Schematic Connector plug halfPLUG · Schematic Connector retaining wire identityHC01PJ · Schematic Connector socket halfSOCKET · Schematic Connector with protective earth contactX · Schematic ContactorKM · SLD / Schematic Converter substationCONV STN · SLD / Schematic Cooker control unitCCU · GA Core-balance current transformerCBCT · SLD / Schematic Counter relay with electrical resetCOUNT ELEC · Schematic Counter relay with manual resetCOUNT MAN · Schematic Crank-operation qualifierQ021214 · Schematic CT test terminalCT test · Schematic Current transformerCT · SLD / Schematic Current transformer with primary conductor indicationCT PRI · SLD / Schematic Current transformer with two secondariesCT 2SEC · SLD / Schematic Current-limiting circuit breakerCB LIM · SLD / Schematic Current-measuring shuntSHUNT · SLD / Schematic Damped high-pass harmonic filterHPF · SLD / Schematic Data outlet plan symbolDO · GA DC generatorG DC · SLD / Schematic DC motorM DC · SLD / Schematic