Overview

GSRM6-12 11kv Gas Insulated Switchgear fully insulated fully enclosed compact switchgear, which can realize functions of control, protection, measurement, monitoring, communication, etc. is especially suitable for places with small distribution facility site and high reliability requirements, and places with a relatively harsh natural environment and conditions, such as underground, highland and coastal areas. It is mainly used in areas where land is tight and space is limited, high reliability is required, like industrial and mining enterprises and substations, subways, light rail railways, etc.
It combines microprocessor technology, modern network communication technology and new switch manufacturing technology to effectively separate and combine load current and short circuit current. The measurement protection control and communication functions configured inside the device can fully meet the requirements of the distribution automation system.
The conductive parts of the high voltage components such as circuit breakers, three working position switches and load break switches in the main circuit are installed in a sealed cabinet-type stainless steel casing. The biggest feature is that it is not affected by the external environment, and has high reliability and can make the equipment run safely for a long time in places with poor environment; secondly, the size of the high voltage component is reduced, the device is miniaturized, and the parts inside the sealed casing are free from corrosion and rust, thereby eliminating the influence. In addition, with high voltage components with stable performance and long electrical life, maintenance-free or less maintenance requirements can be achieved.

Model meaning

Use Conditions

Ambient air temperature: -40℃~+40℃;
Relative air humidity: daily average ≤95%, monthly average ≤90%;
Altitude ≤1500m (under standard inflation pressure);
Seismic intensity ≤9 class;
Places free from fire, explosion, serious contamination, chemical corrosion and severe vibration.

Special Conditions

Manufacturers and end users must agree on special operating conditions that are different from normal operating conditions;
If a particularly harsh operating environment is involved, the manufacturer and supplier must be consulted;
When electrical equipment is installed at an altitude of 1500 meters or more, special instructions are required to adjust the pressure during manufacturing. When the pressure is adjusted, the life of the switchgear itself has no significant effect.

Product Technical Characteristics

Modular design
The switch is divided into fixed module and expandable module group. In the same SF6 insulated air chamber, up to 6 modules can be configured. Switching cabinets with more than 6 modules must be connected with the expansion busbar to realize the semi-module. Structure; full module configuration can also be achieved by using an extended bus between all modules. Through the combination of different functional modules, a simple to complex power distribution scheme can be formed to meet various configuration requirements in the secondary substation and the opening and closing.

Compact structure
Except for the air-insulated metering cabinet, all modules are only 325mm wide and the metering cabinet width is 695mm; the cable joints of all units are the same height to the ground, which is convenient for on-site construction.

Unaffected by the environment
All high-voltage live parts are installed in a sealed stainless steel case. The case is welded with a stainless steel plate and filled with SF6 gas at a working pressure of 1.4 bar. The degree of protection is IP67. It can be used in places where it is installed in damp, dusty, salt spray, mine, box-type substation and air pollution. Even the fuse compartment has an IP67 rating. The extension busbars are completely insulated and shielded to ensure that they are not affected by changes in the external environment.

Highly reliable personal safety
All live parts are enclosed in the SF6 air chamber; the switch has a reliable pressure relief channel, the load and grounding switches are three-position switches, simplifying the interlocking between each other; reliable mechanical interlock between the cable compartment cover and the load switch .

Performance Index

● SF6 gas pressure: 1.4bar under 20℃ (absolute pressure)
● Annual leakage rate: 0.25%/year
● Protection grade
SF6 gas room: IP67
Fuse tube: IP67
Switchgear enclosure: IP3X
● Busbar
Switchgear internal busbar: 400mm2Cu
Switchgear earthing busbar: 150mm2Cu
Thickness of gas room stainless steel enclosure: 3.0mm
● The front panel and the side panel of the switchgear, and the front cover of the cable room, the company’s standard color is: jade color 7783; if users have special requirements, please put forward when ordering.

Meet Main Standards

• GB 1984 High-voltage alternating-current circuit-breakers (IEC 62271-100: 2001, MOD)
• GB 1985 High-voltage alternating-current disconnectors and earthing switches (IEC 62271-102: 2002, MOD)
• GB/T 11022 Common specifications for high-voltage switchgear and controlgear standards
• GB 3804 High-voltage alternating-current switches for rated voltage above 3.6kV and less than 40.5kV (IEC 60265-1-1998, MOD)
• GB 3906 Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6kV and up to and including 40.5kV (IEC 62271-200-2003, MOD)
• GB 4208 Degrees of protection provided by enclosure (IP code) (IEC 60529-2001, IDT)
• GB 16926 High-voltage alternating current switch-fuse combinations (IEC 6227-105-2002, MOD)
• DL/T 402 Specification of high-voltage alternating-current circuit-breakers (IEC 62271-100-2001, MOD)
•DL/T 403 HV vacuum circuit-breaker for rated voltage 12kv to 40.5kv
• DL/T 404 Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6kV and up to and including 40.5kV
• DL/T 486 HV AC disconnectors and earthing switches (IEC 62271-102-2002, MOD)
• DL/T 593 Common specifications for high-voltage switchgear and controlgear standards IEC 60694-2002, MOD)
• DL/T 728 Technical guide for the order of gas-insulated metal-enclosed switchgear (IEC 815-1986, IEC 859-1986)
• DL/T 791 Specification of indoor AC HV gas-filled switchgear panel

Technical Parameters

Note 1: depends on the rated current of fuse.

Ordering Instructions

When ordering, the following technical information must be provided
• Main circuit diagram, arrangement diagram, and layout diagram;
• Switchgear secondary circuit schematic diagram;
• If the switchgear is used under special environmental conditions, it should be proposed.

Standard Modules

Each module of the GSRM6(XGN□)-12 type switchgear has the following configurations
• See standard configuration and features in “cable connection module without grounding knife”
• C cabinet – load switch module
See standard configuration and features in “load switch module”
•See standard configuration and characteristics in “load switch and fuse combination module”
• V cabinet – vacuum switch module
See standard configuration and features in “vacuum switch module”
• Capacitive voltage indicator for the incoming bushing
• Install a pressure gauge that monitors SF6 density in each chamber
•  Lifting lug
• Operating handle

Optional Configurations

Electric operating mechanism/cable short circuit and ground fault indicator/current transformer and meter

Professional Gas Insulated Switchgear supplier and manufacturer 

1. Zhejiang GONGSHUN Electrical Co.,Ltd (electricgs.com), Our company was founded in the late 1990s, specializing in the production of inflatable cabinets, SF6 inflatable cabinets, and various high and low voltage complete sets of electrical equipment. It has multiple subsidiaries under its jurisdiction, including high-voltage load switch branch, high-voltage circuit breaker branch, high-voltage fuse branch, and technology development branch.Our technical expertise, comprehensive product portfolio and long-term rich experience are helping many customers in need to solve their power problems. We’re happy to help at any time.  Whether you need application product advice or technical assistance, our global service team is committed to providing you with the right support. For more technical information about medium voltage earthing switch, feel free to contact us, send an email to gongshun@electric-cn.com 
2. Our company specializes in producing 12KV-40.5KV series high-voltage electrical products: FZN58, FLN48, FLN36, FZRN25, FZN21, FN18, ZFN16, FN12, FN8, FN7, FN5, XRNT, XRNP, VS1, ZN28, ZW8, ZW32, JN15, GN19, GN22, GN24, GN30, CLXGN15-12, HXGN □ -12, DXG-12 (L), DFW □ -12 high-voltage cable branch box, CLXGN □ -12 (SF6) series inflatable cabinet 12KV and 35KV cable accessories, etc; CLVXP-12 indoor AC high voltage fixed switchgear, CL-SIS-12 compact solid insulated ring main unit, professional assembly Schneider SC6 (SF6) series load switchgear, ABB produced SFG (SF6) series load switchgear and other series products; Distribution and agency of high-voltage load switches and inflatable cabinets produced by Schneider Electric and ABB; Siemens produces the 3AJ1 series of indoor medium voltage vacuum circuit breakers and other related products. The company has a complete range of products and has been operating safely on domestic and international power grids for a long time, receiving unanimous praise from both new and old users. Among them, multiple products such as FZRN25, FN12, FLN36-12, XRNT-12 have been exported to various countries and regions in East Asia, South Asia, Southeast Asia, Africa, and the United States.