Product classification
EH8 SF6 Air Insulated Ring Main Unit
EH8 metal enclosed ring network switchgear is a 50Hz, three-phase AC indoor high-voltage distribution switchgear. The main switch unit consists of load switches and grounding switches sealed in an epoxy resin housing, which is filled with SF6 gas. This product is suitable for 12kV ring network power supply or double-radiation power supply systems. When a fault occurs in the line, it can promptly restore the transformer circuit feed, greatly improving the reliability and utilization of the power supply.
- Description
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Product Overview:
The EH8 metal enclosed ring network switchgear is a 50Hz, three-phase indoor high-voltage distribution switchgear. The main switch unit consists of a load switch and a grounding switch sealed in an epoxy resin housing, filled with SF6 gas. This product is suitable for 12kV ring network power supply or double-radiation power supply systems. When a fault occurs in the line, it can promptly restore the transformer circuit power supply, greatly improving the reliability and utilization of power supply.
It is particularly suitable for industrial and commercial areas with high power load density, or rural towns using cable-fed networks. At the same time, the ring network cabinet is safe to use, unaffected by climate, easy to install, requires little maintenance, and saves space, making it very suitable for installation in switching stations and box-type substations.
Main Technical Parameters:
Rated Voltage: 12kV
Rated Current: 630A
Rated Peak Withstand Current: 50kA
Rated Short-Time Withstand Current/Time: 20kA/4s
Rated Active Load Breaking Current: 630A
Rated Cable Charging Breaking Current: 10A
Transfer Current: 1750A
Product Features:
▪ The main switch is installed in a closed epoxy resin housing, filled with 1.4bar SF6 gas as insulation and arc-extinguishing medium, making it a fully enclosed, fully insulated switch;
▪ The switch features double break contacts, a rotating moving contact, and a magnetic coil arc-extinguishing device, with three positions: closing, breaking, and grounding;
▪ Visible isolation break ensures the safety of personnel and equipment during operation;
▪ The main switch is a solid insulation unit formed by encapsulating epoxy resin material, with high insulation performance;
▪ Complete mechanical and electrical interlocks effectively prevent misoperation;
▪ The main switch is sealed in a gas chamber, unaffected by dirt or condensation;
▪ The product is maintenance-free and cost-effective;
▪ Compact structure reduces footprint, achieving miniaturization of the product;
▪ Modular design allows for arbitrary expansion and combination according to customer needs;
▪ Large cable installation space, with cable plugs arranged front and back, making cable installation convenient.
Applications:
Widely used in industrial and civil distribution networks and power supply terminals, especially suitable for small secondary substations, switching stations, industrial and mining enterprises, urban residential communities, airports, railways, tunnels, high-rise buildings, and other power systems for receiving and distributing electrical energy.
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