Scope of Application:The FZN25-12 is an indoor 12kV, 50Hz/60HZ three-phase AC high-voltage load switchgear. It fits power distribution systems in industrial plants, substations, commercial buildings and mines, mainly for load current switching, closed-loop operations, and controlling no-load transformer/cable charging currents. Ideal for RMUs, terminal power units and compact substations, it enables electrical distribution, control and protection.
Rated Voltage:15KV,12kV,11KV,10KV (compliant with IEC 60298)
Rated Current: Standard models: 630A (base type), 125A/200A (fuse-combination type)
Power Frequency Withstand Voltage: 42kV (r.m.s.) phase-to-earth/phase-to-phase; 48kV (r.m.s.) across isolation gap
Lightning Impulse Withstand Voltage: 75kV (peak) phase-to-earth/phase-to-phase; 85kV (peak) across isolation gap
Breaking Capacity:Active Load Current: 630A; Cable Charging Current: 10A; No-Load Transformer Capacity: 1600kVA; Fuse-Assisted Short-Circuit Breaking: 31.5kA