ABB | SACE Emax 2Electrical accessories | 1 - Electrical control accessories249 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. AElectrical accessories1 - Electrical control accessoriesYO-YC-YO2-YC2 (1): Openingand closing coilThe opening coils, YO and YO2, and the closing coil, YC and YC2 (1) , allow the circuit-breaker to be controlledremotely.The opening of the circuit-breaker is always possible with the circuit-breaker closed, while closing is possiblewith the circuit-breaker open and the closing springs charged.The opening and closing coils can operate in two different modes:• instantaneous service (the minimum duration of the command impulse must be 100 ms).• service with permanent power supply.YOYCYUYO2C12C13C11C2C3C1D2D1YO-YC-YO2 for E1.2YO YC 2YCYUYO 2C22C21C12C13C11C2C3C1D2D1YO-YC-YO2-YC2 for E2.2 - E4.2 - E6.2NOTE: the second opening coil YO2 is alternative to the undervoltage coil YU.IMPORTANT:• If the closing coil is permanently energized and the opening coil trips, after opening,the closing coil must be momentarily de-energized so that it can be reused for the nextclosing operation.• If instead the opening coil trips, it is necessary, after having de-energized it, to wait atleast 100 ms before operating the closing coil.Available voltages and characteristicsThe tables listing the available voltages and the electrical characteristics are provided below:Available voltages (Un)24 V AC/DC30 V AC/DC48 V AC/DC60 V AC/DC110…120 V AC/DC220…240 V AC/DC240...250 V AC/DC277 V AC/DC380…400 V AC415…440 V AC480…500 V AC500…550 V ACGeneral characteristics YO-YO2 YC-YC2 (1)Operating limits 70...110 %Un 85...110 %UnInrush power (Ps) 300 VA/WContinuous power (Pc) 3.5 VA/WMaximum opening time 35 ms -Maximum closing time - 50 ms(1) YC2 not available for E1.2Continued on the next page
