ANSI / IEEE symbol forms

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Lightning air terminationAT · GA / Schematic Lightning protection down-conductorDC · GA / Schematic Lightning protection test jointTJ · GA / Schematic Line-interactive UPSUPS VI · SLD Load-break switchLBS · SLD / Schematic Manual transfer switchMTS · SLD / Schematic Microgrid controllerMGC · SLD / Schematic Microgrid interconnection switchMIS · SLD Motor-generator setMG · SLD / Schematic Neutral earthing resistorNER · SLD / Schematic Normally closed contactNC · Schematic Normally closed pushbuttonPB NC · Schematic Normally open contactNO · Schematic Normally open pushbuttonPB NO · Schematic Offline standby UPSUPS VFD · SLD / Schematic OhmmeterΩ · Schematic Online double-conversion UPSUPS VFI · SLD Open-delta voltage transformer connectionVT · SLD / Schematic Optical fibre cableOF · Schematic / SLD Phasor measurement unitPMU · SLD / Schematic PLC input / outputPLC I/O · Schematic Plug-in buswayBD · SLD / GA Point of common couplingPCC · SLD Potential test switchTS · Schematic Power converter / inverterPCS · SLD / Schematic Power plant controllerPPC · SLD Power transformerTX · SLD / Schematic Protective earthPE · SLD / Schematic PV central inverterINV CTR · SLD PV microinverterMI · SLD / Schematic PV string inverterINV STR · SLD Relay coilCoil · Schematic Resistive load bankLB · SLD Resistive-reactive load bankLB RL · SLD ResistorR · Schematic Rotary UPSRUPS · SLD Selector switchSS · Schematic Separable cable connectorX · SLD / Schematic Single battery cellGB cell · Schematic Single-phase synchronous generatorG 1~ · SLD / Schematic Single-tuned harmonic filterHF · SLD / Schematic Split-phase inverterINV 2x120 · SLD / Schematic Static frequency converterSFC · SLD Static synchronous compensatorSTATCOM · SLD Static transfer switchSTS · SLD / Schematic Static var compensatorSVC · SLD Supercapacitor bankSC · SLD / Schematic Synchronous condenserSC · SLD Synchronous generator with brushless exciterG 3~ BX · SLD / Schematic Terminal connectionTerminal · Schematic Three-phase induction generatorG 3~ ASG · SLD / Schematic Three-phase motorM · SLD / Schematic Thyristor phase-controlled rectifierSCR REC · SLD / Schematic Thyristor-controlled reactorTCR · SLD / Schematic Thyristor-switched capacitorTSC · SLD / Schematic Twelve-pulse rectifier12P · SLD UPS maintenance bypassMBP · SLD Utility grid connectionGRID · SLD Variable-slip wind turbine generator (Type 2)WTG T2 · SLD / Schematic Voltage transformerVT / PT · SLD / Schematic