FZN25-12D/T630-20 Type indoor AC high voltage load

FZN25-12D/T630-20 Type Indoor AC switch is three-phase AC 50Hz, rated voltage of 12kV and indoor installations, for industrial and mining enterprises for distribution in clinics and substations and other occasions, as electrical protection and control facilities for the division and load current, loop current, no load transformer and cable charging current. FZRN25-12D / T () -31.5 type indoor AC high voltage vacuum load switch- fuse combination units is three-phase AC 50Hz, rated voltage of 12kV for indoor installations for industrial and mining enterprises and other occasions to change the station distribution Institution for load control and short circuit protection purposes. Equipped with grounding switch can withstand short-circuit current. Actuator can be manual and electric, easy remote control three power system requirements. FZN25-12D, FZRN25-12D-type load switch and the combination of electric three-phase are for city distribution and industrial power equipment of three phase ring network or terminal power supply ,for load control and short circuit protection. As the combination of electrical transformers and other electrical equipment on the protective effect than the circuit more reliable, more economical, especially for rings, double radiation power supply units and box-type substation. Mainly technical parameters NoItemUnitValue1Rated voltagekV122Rated frequencyHz503Rated currentA4Rated insulation level1min power frequency withstand voltagekVArc-quenching chamber fracture 30(effective value)Earth ,phase 42, insulating fracture 48Lightning impulse withstand voltage (peak)Earth ,phase 75, insulating fracture 855 Rated dynamic current (peak)kA5064S thermal currentkA207Rated power load breaking currentA6308Rated closed-loop breaking currentA6309Rated cable charge breaking currentA1010Rated breaking no-load transformer capacitykV125011Rated transfer currentA200012Fuse modelSDLAJ-1213Striker output energyJ2 514Rated short-circuit closed currentkA5080(predictive value)15Earth switch rated dynamic currentkA5016Earth switch 2s thermal currentkA2017Auxiliary circuit rated voltageV 220 11018Mechanical lifetimes1000019Opening time of fuse trigger ms—30 4020Opening time of tripper triggerms40 50