12/24kV Gas-Insulated Ring Main Unit Specifications and Parameters
- Product Series: YBCMC
- Product Brand: Yue Biao
- Rated Voltage: 12kV, 24kV
- Rated Frequency: 50Hz
- Ring Main Circuit Rated Current: 630A
- Fuse Circuit Rated Current (Maximum): 125A
- Rated Active Breaking Current/Breaking Cycles: 630A/20 cycles Rated Cable Charging
- Breaking Current/Breaking Cycles: 40A/20 cycles Rated Short-Time Withstand Current (Main and Grounding Circuits): 20kA
- Rated Peak Withstand Current: 20kA
- Rated Short-Circuit Duration: 3s
- Rated Short-Circuit Closing Current (Peak): 50kA Rated Transfer Current: 1750, 1400A Rated Insulation Level (1min Power Frequency Withstand Voltage: Earth, Phase-to-Phase/Isolation Break): 42, 48, (65, 79)kV
- Rated Insulation Level (Lightning Impulse Withstand Voltage: Earth, Phase-to-Phase/Isolation Break): 75, 85 (125, 145) kV
- Rated SF6 Gas Pressure (Gauge Pressure at 20°C)/(Minimum Pressure): 0.04, 0.02 MPa Mechanical Life (Load Switch/Earthing Switch): 5000, 2000 operations SF6 Gas Annual Leakage Rate: <0.1%
- Protection Rating: IP67 (Gas Chamber), IP3X (Enclosure)
Product Application
YueBiao Electrical Equipment Co., Ltd.'s gas-insulated ring main unit switchgear is designed for use with three-phase AC 50 Hz distribution systems with rated voltages of 12 kV/24 kV. It features a fully sealed design, with live components and switches enclosed within a stainless steel housing. The entire switchgear remains unaffected by external environments. Expandable busbars allow for arbitrary combinations and full modularity.
The expansion busbars are fully insulated and shielded to ensure high reliability and safety, enabling maintenance-free operation. It is applied in industrial and civil cable ring networks and power supply terminals and is particularly suitable for small secondary substations, switching stations, industrial and mining enterprises, urban residential communities, airports, railways, tunnels and high-rise buildings. It is used to receive and distribute electrical energy.
