Product Description:

With the acceleration of urbanization and the continuous improvement of power supply reliability requirements, urban overhead routes are gradually transformed into underground cable routes, and centralized indoor switchboards are gradually replaced by distributed outdoor ring main units. SF6 gas insulated switchgear (ring main unit) is not affected by external environment (such as condensation, pollution, high altitude, small animals and chemicals), with its features of small size and maintenance free, which is widely used in some place with high reliability power distribution system such as CBD, industrial park, airport, electronic railway, subway and freeway. It not only can be exclusive used in outdoor or indoor, but also can be used in HV/LV compact substation.

SH-SRM-12 SF6 gas insulated switchgear (ring main unit) is the latest design with our advanced producing equipment and manufacturing technology. Comparing to other similar products, it has more outstanding appearance, more mature and reliable mechanical interlocking and more uniform electric field in gas box.

Item Meaning:

Application Condition:

• Altitude: ≤2000m
• Ambient Temperature: -40℃–40℃ （average temperature in 24 hours ≤35℃ ) / -40℉–104℉（average temperature in 24 hours ≤95℉）

• Relative Humidity: daily mean≤95%；monthly mean≤90%
• Installation Environment: the place without strenuous vibration and impact, fire, or explosion hazard.
• Earthquake Intensity: ≤8 degree; horizontal ground acceleration≤0.4g;
• Vertical ground acceleration≤0.2g
• Notice: please contact us if the application environment is beyond above range.

Product Advantages:

• Fully Insulated & Fully Sealed—–Safer Design

SH-SRM-12 gas insulated switchgear (GIS) with primary circuit and main component in sealed stainless steel cabinet, SF6 as insulating medium, the inlet and outlet terminals are connected through cable connectors to ensure its fully insulated and fully sealed of ring main unit, which is not affected by external environment. The protection grade of gas tank reaches to IP67. The outer parts of gas tank are specially designed and surface treated to resist condensation and resist flood in gas box.

• Standard Modular Design

Typical unit modules include load switch (Unit C），load switch-fuse combination (Unit F), circuit breaker (Unit V), busbar PT (Unit P), feeder (Unit B) and meter (Unit M), etc. Different unit modules can be arbitrarily combined into the same cabinet of gas insulated switchgear.

• Flexible And extensible Design

SH-SRM-12 gas insulated switchgear can be combined by various standard modules into a non-extensible ring main unit, and different modules also can be combined to design an extensible unit. Through the dedicated busbar connector,a diversified unit combination can be achieved to maximize satisfied the complex and diverse power supply and distribution design schemes in worldwide.

• Specialized Cable Distribution Cabinet Application Solution

SH-SRM-12 gas insulated switchgear’s busbar can be with equipped with right and left outlet bushings, which is very suitable for various cable distribution cabinets with one piece or several pieces of load switch, to achieve flexible and economic distribution schemes.

Technical Parameters: