Electrical reference directory

Page 10 of 32 · 3155 references, with definitions, drawing context and available downloads and previews.

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Breaker-failure current-check gateBCG · Schematic Breaker-failure initiate interfaceBII · Schematic Breaker-failure retrip outputBRO · Schematic Breaker-failure upstream trip matrixBUTM · Schematic Breaker-open disconnector interlockBDI · Schematic Breaker-open earthing interlockBEI · Schematic Broken-delta residual input interfaceBRII · Schematic Brush-operating or slip-ring short-circuiting device35 · SLD / Schematic Buchholz relayBR · Schematic / SLD Buck converter topologyBUCK · Schematic / SLD Built-on earthing-switch connectionBEC · Schematic Bulkhead connectorGA · GA / Schematic Bus differential check-zone interfaceBDCI · Schematic Bus differential zone-selection blockBDZB · Schematic Bus protection isolator-replica interfaceBPII · Schematic Bus-coupler bay primary arrangementBBPA · Schematic Bus-coupler compartmentGA · GA / SLD Bus-section bay primary arrangementBBPA · Schematic Bus-section disconnector arrangementBDA · SLD / Schematic Bus-section load-transfer requestBLR · Schematic Bus-section protection-boundary interfaceBPI · Schematic Bus-selector disconnector pairBDP · SLD / Schematic Bus-selector earthing-switch associationBEA · Schematic Bus-side earthing-switch bay interfaceBEBI · Schematic Bus-transfer bypass arrangementBBA · SLD / Schematic Bus-voltage selection relay interfaceBSRI · Schematic BusbarBus · SLD / Schematic Busbar compartmentGA · GA / SLD Busbar differential protection87B · SLD / Schematic Busbar earthing-point arrangementBEA · SLD / Schematic Busbar extension isolation arrangementBEIA · SLD / Schematic Busbar protection-zone overlap arrangementBPOA · SLD / Schematic Busbar support insulatorGA · GA / SLD Busbar surge-protection connection arrangementBSCA · SLD / Schematic Busbar trunkingBusway · GA Busbar voltage-measurement bay arrangementBVBA · SLD / Schematic Bushing current transformerBCT · SLD / Schematic Busway end feed unitEF · SLD / GA Busway tap-off connectionTO · SLD Busway tap-off unitGA · GA / SLD Bypass-isolation transfer switchBP/ATS · SLD Cabinet control-supply healthy relayCCHR · Schematic Cable branch jointJ · SLD / GA Cable cleatGA · GA / SLD Cable duct bankGA · GA / SLD Cable glandGA · GA / Schematic Cable identification markerHW01 · Schematic Cable ladder / trayCable support · GA Cable pitGA · GA / SLD Cable screen cross-bondingCB · SLD / Schematic Cable sheath both-end bonding arrangementCSBBA · Schematic Cable sheath cross-bonding section interfaceCSCSI · Schematic Cable sheath single-point bonding arrangementCSSBA · Schematic Cable sheath voltage-limiter interfaceCSVI · Schematic Cable straight-through jointJ · SLD / GA Cable support bracketGA · GA / SLD Cable termination compartmentGA · GA / SLD Cable transition jointJ · SLD / GA Cable trenchGA · GA / SLD Cable-basement flood-level alarmCFA · Schematic Cable-compartment door interlockCDI · Schematic Cable-entry frameGA · GA / Schematic Cable-transition bay interfaceCBI · Schematic Cable-tray horizontal bendGA · GA / SLD Cable-tray vertical riserGA · GA / SLD Cable-trench sump high-level interfaceCSHI · Schematic Cable-trench sump pump run interfaceCSPRI · Schematic Calculated residual directional overcurrent67R · SLD / Schematic Calculated residual instantaneous overcurrent50R · SLD / Schematic Calculated residual time-overcurrent51R · SLD / Schematic Cam-operated limit switchLS CAM · Schematic Cam-operation qualifierQ021316 · Schematic Cam-profile indicationQ021317 · Schematic CAN bus transceiverCAN · Schematic CAN FD transceiverCAN FD · Schematic Capacitive digital isolatorDIG-ISO · Schematic Capacitive level sensorCAP LVL · Schematic Capacitive proximity switchPROX CAP · Schematic Capacitive VT carrier-coupling boundaryCVCB · Schematic CapacitorC · SLD / Schematic Capacitor buffer moduleBUFFER CAP · SLD / Schematic Capacitor voltage transformerCVT / CCVT · SLD / Schematic Capacitor-bank switching bay arrangementCSBA · Schematic Capacitor-trip operating interfaceCOI · Schematic Carbon-disc variable resistorHVR1R8 · Schematic Carrier channel supervision alarmCCSA · Schematic Carrier coaxial feeder interfaceCCFI · Schematic Carrier coupling drain-coil referenceCCDR · Schematic Carrier line-matching-unit interfaceCLI · Schematic Carrier receive-detection outputCRO · Schematic Carrier transmit-enable inputCTI · Schematic Carrier-coupling protective earth interfaceCPEI · Schematic CCTV camera plan symbolCAM · GA Ceiling fan plan markCF · GA Ceiling pull-cord switch plan markSPC · GA Central-battery lighting outgoing branchCLOB · Schematic Centre-break disconnector application referenceCDAR · Schematic Centre-tapped battery bankGB ± · SLD / Schematic Changeover contactCO · Schematic Charging-motor overload indicationCOI · Schematic