The ZW32-12F outdoor high-voltage vacuum circuit breaker is an outdoor distribution device rated for 12 kV and 50 Hz AC power supply. It is primarily used to interrupt and close load currents, overload currents, and short-circuit currents in power systems. Suitable for use in substations and distribution systems of industrial and mining enterprises for protection and control, it is especially well-suited for rural power grids and locations requiring frequent operation. This product, when paired with a controller, meets the requirements of distribution automation systems and can reliably and effectively perform traditional recloser functions. The switch employs vacuum arc quenching as the arc-extinguishing medium.
Main Parameters:
• Rated voltage: 12 kV (10 kV system); frequency: 50 Hz
• Rated current: 630 A / 1000 A / 1250 A
• Rated short-circuit breaking current: 20 kA / 25 kA; short-time withstand (4 s): 20 kA
• Insulation level: power frequency 42 kV / 1 min; lightning impulse 75 kV
• Sensors (electronic type):
◦ Voltage EVT: 10 kV/√3 → 3.25 V/√3; zero-sequence 6.5 V/3
◦ Current ECT: 600 A/1 V, zero-sequence 20 A/0.2 V
◦ Accuracy class: metering 0.5S/0.5; protection 5P10/3P
• Operating mechanism: spring-operated (manual/electric), optional disconnector and mechanical interlock
Features:
• Vacuum arc extinguishing, oil-free and SF6-free, outdoor silicone rubber insulation, pollution-resistant, maintenance-free
• Measurement: three-phase current/zero-sequence current, three-phase voltage/zero-sequence voltage, active/reactive power, energy consumption, line loss
• Protection: short-circuit, overload, single-phase grounding fault detection, reclosing, fault isolation, feeder automation (FTU three-remote functions: remote measurement, remote signaling, remote control)
• Protection rating: IP65
