Emax Low voltage air circuit-breakers - ABB Download Center

Measurement, signalling and available data functionsDetails about functions available on PR122/P, PR123/P trip units with PR120/D-M and EP010 – FBP are listed in the table below:PR122/P PR123/P PR122/P-PR123/P+ PR120/D-M + PR120/D-M + PR120/D-Mand EP 010Communication functionsProtocol Modbus RTU Modbus RTU FBPPhysical layer RS-485 RS-485 Profibus-DP orDeviceNet cableMaximum baudrate 19200 bps 19200 bps 115 kbpsMeasuring functionsPhase currents ■ ■ ■Neutral current ■ ■ ■Ground current ■ ■ ■Voltage (phase-phase, phase-neutral, residual) opt. (1) ■ ■Power (active, reactive, apparent) opt. (1) ■ ■Power factor opt. (1) ■ ■Frequency and peak factor opt. (1) ■ ■Energy (active, reactive, apparent) opt. (1) ■ ■Harmonic analisys up to the 40th harmonic ■ ■ (2)Signalling functionsLED: auxiliary power supply, warning, alarm ■ ■ ■Temperature ■ ■ ■Indication for L, S, I, G and other protection opt. (1) ■ ■Available dataCircuit-breaker status (open, closed) ■ ■ ■Circuit-breaker position (racked-in, racked-out) ■ ■ ■Mode (local, remote) ■ ■ ■Protection parameters set ■ ■ ■Load control parameters ■ ■ ■4AlarmsProtection L ■ ■ ■Protection S ■ ■ ■Protection I ■ ■ ■Protection G ■ ■ ■Fault release mechanism failure ■ ■ ■Undervoltage, overvoltage and residual voltage(timing and trip) protection opt. (1) ■ ■Reverse power protection (timing and trip) opt. (1) ■ ■Directional protection (timing and trip) ■ PR123 onlyUnderfrequency/overfrequency protection (timing and trip) opt. (1) ■ ■Phases rotation ■ ■MaintenanceTotal number of operations ■ ■ ■Total number of trips ■ ■ ■Number of trip tests ■ ■ ■Number of manual operations ■ ■ ■Number of separate trips for each protection function ■ ■ ■Contact wear (%) ■ ■ ■Record data of last trip ■ ■ ■Operating mechanismsCircuit-breaker open/closed ■ ■ ■Reset alarms ■ ■ ■Setting of curves and protection thresholds ■ ■ ■Synchronize system time ■ ■ ■EventsStatus changes in circuit-breaker, protections and all alarms ■ ■ ■(1) with PR120/V(2) up to 21 st harmonic and only with PR123/PABB SACE 4/43