English
The JLGYZ8-12 series high-voltage vacuum prepayment metering device is designed for use in three-phase power systems with AC frequency of 50Hz and voltage of 12kV. It serves the purpose of breaking and closing load currents, providing overload and shortcircuit protection, quick-break protection, timed delay protection, and automatic reclosing function. Additionally, it can be equipped with surge arresters or isolating switches (referred to as "combined intelligent circuit breakers") according to user requirements. The intelligent circuit breaker has its own power supply, allowing remote control, and comes with CT and PT interfaces to meet telemetry requirements.
Ambient condition
Altitude: ≤1000m (If increased altitude is required, the rated level should be adjusted accordingly).
Ambient Air Temperature: Upper limit +40°C, Lower limit -40°C.
Seismic Intensity: ≤8 degrees.
Average Relative Humidity: Daily average ≤95%, Monthly average ≤90%.
No exposure to fire, explosion hazards, severe pollution, chemical corrosion, or intense vibration.
