High Voltage Switchgear
01
SRM6 Fully-Insulated Gas-Insulated Ring Main Unit (RMU)
Features
● The fully insulated gas-insulated ring main switchgear is mounted on a galvanized steel frame. Switch units are housed in an SF6 gas chamber made of 3mm thick corrosion-resistant non-magnetic stainless steel. The SF6 chamber is a "hermetically sealed pressure system" designed for 30-year operation under normal conditions. The normal working pressure of SF6 gas is 0.15-0.4bar. The chamber is equipped with a pressure relief device to release gas from the bottom or rear in case of over pressure.
● Load switches adopt a coaxial rotating double-break mechanism, operated via a single access hole in conjunction with a sliding plate. This ensures the switch can only be in one of three states ("closed, open, earthed") at any time, eliminating misoperations.
● The switch operating mechanism is installed on the front exterior of the gas chamber, treated with anti-corrosion processes for easy manual operation/maintenance. It also supports straightforward electrification upgrades.
Operating conditions
● Ambient temperature:
● Lower than or equal to 40°C
● Higher than or equal to -25°C
● Altitude: ≤ 1000m (Above1000m, Please consult us)
● Humidity: Lower or equal to 95% (24 hours)
Technical specifications
|
Unit code |
Items |
Unit code |
Meaning of the codes |
|
C |
Standard single tube load switch unit |
- |
Busbar top sleeve |
|
F |
Load switch fuse combination electrical unit |
SL |
Busbar connection unit |
|
V |
Circuit breaker unit |
M |
Measurement unit |
|
D |
Cable entry unit (without switch) |
PT |
PT unit |
|
+ |
Busbar side sleeve |
1K2(4) |
Load switch unit with double tube outgoing line |