Gas insulated metal enclosed switchgear SRM15-12

GB1984-2014 High voltage AC circuit breakers (IEC 62271-100:2008 MOD);
GB1985-2004 High voltage AC isolation switches and grounding switches (IEC 62271-102:2002 MOD);
GB3804-20043.6kV~40.5kV high-voltage AC load switch (IEC 62271-103:2013 MOD);
GB3906-20063.6kV~40.5kV AC metal enclosed switchgear and control equipment (IEC 62271-200:2003 MOD);
GB16926-2009 High voltage AC load switch fuse combination electrical appliances (IEC 62271-105:2002 MOD);
GB4208-2008 Housing Protection Level (IP Code);
GB8905-1996 Guidelines for gas management and detection in sulfur hexafluoride electrical equipment;
GB/T11022-2011 Common technical requirements for high-voltage switchgear and control equipment standards (IEC 62271-1:2007 MOD);
GB/T11023-1989 High voltage switchgear - Test method for sulfur hexafluoride gas sealing;
GB/T12022-2014 Industrial sulfur hexafluoride;
DLT404-2007 3.6kV~40.5kV AC metal enclosed switchgear and control equipment;
DLT593-2006 Common technical requirements for high-voltage switchgear and control equipment standards;
DUT791-2011 Guidelines for the Selection of Indoor AC Inflatable Cabinet Switch Cabinets;
JB8738-1998 Vacuum arc extinguishing chamber for 3.6kV~40.5kV AC high-voltage switches.

● Surrounding air temperature: -40 ℃~+40 ℃, daily temperature difference: not exceeding 35 ℃;
● The altitude shall not exceed 4000m (please specify when the equipment operates at an altitude exceeding 1000m!);
● The surrounding air is not contaminated by corrosive gases and/or flammable and explosive gases, and the installation site has no severe impact; The pollution level shall not exceed Level III specified in GB/T5582;
● Seismic intensity: 8 degrees;
The amplitude of electromagnetic interference induced in the secondary system shall not exceed 1.6kV;
● Special usage conditions: If it is different from the normal usage conditions mentioned above, the user needs to negotiate with the manufacturer to reach a consensus.

Technical characteristics of the product

● Fully sealed structure, super environmental adaptability
The once-charged part is completely sealed in the SF6 gas box filled with 0.04Mpa, and the current inlet and outlet parts are all connected by touch-type cable connectors. All charged parts are fully sealed and fully insulated. Therefore, this product is safe to operate under severe environmental conditions such as high altitude, strong wind and sand, high salt spray, severe pollution and severe humidity.
● The product is small in size and flexible in expansion
Modular design scheme, flexible combination of each unit, the left and right air boxes can be expanded arbitrarily, and can be disassembled separately to meet the complex and diverse power distribution design schemes in various regions to the greatest extent.
Adopt advanced design methods to ensure product performance parameters
Using computer three-dimensional simulation technology, electric field simulation analysis, magnetic field simulation analysis and mechanism motion simulation analysis to ensure the accuracy of technical parameters;
Advanced welding and sealing technology
The stainless steel plate of the air box is laser cut and welded by ABB welding robot to fully ensure the dimensional accuracy and welding quality of the plate. It adopts isobaric vacuuming and nitrogen leak detection technology to ensure sealing. The measured annual leakage rate of SF6 gas reaches 0.01%.
Advanced cleaning technology
The air box adopts ultrasonic cleaning technology, and the product is assembled in a clean room to ensure that the moisture content in SF6 gas reaches below 150ppc, which is higher than the requirements of national standards.
● Intelligent online monitoring and protection methods can be realized
The switchgear can be connected through communication networks and automation systems, and realize the functions of remote control, telemetry, and "three remote" of the switch frame, as well as the functions of fault isolation, recovery and network reconstruction of the distribution network;
● Friendly user interface, perfect "five defense" design
The switchgear can be operated manually and electrically, the operation process is simple and reliable, and the overall structure has a complete "five-proof" interlock design;
● Dedicated cable branch box application solution
Due to the increasing application of distributed ring network switching stations, the XGHS6 series switchgear is specially designed with a bus that can be outputted left and right through the bushing, which is suitable for cable branch boxes with one or more load switches, providing users with flexible and economical power distribution solutions.

Structural features of the product

● Cabinet
The cabinet is assembled by bending the 2mm aluminum-zinc plate, which supports the main gas box and protects the operating mechanism and external components of the switchgear. There are a solution simulation diagram, switch status indication, operation hole, etc. on the front panel of the cabinet.
● Air box
The air box is welded with 3mm 304 stainless steel plate, and it is equipped with the primary live parts of the switchgear. The air box is welded by welding robot, and the sealing of the product is guaranteed through isobaric vacuuming and nitrogen leak detection technology. The box is equipped with a density relay to observe the gas pressure in the box, and the box is also equipped with an explosion-proof film. When an internal arc fault occurs, the explosion-proof film breaks and releases the faulty gas to ensure minimal loss to users.
● Load switch/ground switch
The load switch is divided into two stations (closing-opening) and three stations (closing-opening and grounding).
Grounding switch: The ground switch and the load switch are operated in conjunction, and mechanical interlocking is provided to ensure safe operation.
Vacuum circuit breaker/disconnector: The circuit breaker scheme is divided into V scheme and CB scheme. The V scheme is an integrated structure of the disconnector and circuit breaker, and the circuit breaker is located on the bus side; the CB scheme is a vacuum circuit breaker and its
The operating mechanism is an independent unit, and the circuit breaker is located on the cable side.
● Operating mechanism
Three-position load switch operating mechanism:
OT type: "closing", "sub", "grounding" are all manual operations, used for cable entry and exit cabinets;
Type OTR: Similar to Type T, except that the spring has been stored for opening during manual closing operation, and the opening can be controlled by knobs, opening coils, fuses or relays for combined electrical appliances.
Type OTM: Similar to Type T, electric is added. "Combined", "divided" operation.
OTRM type: Similar to the TR type, electric "table" and "sub" operation are added.
Vacuum switch, vacuum circuit breaker cabinet three-position isolation switch operating mechanism:
OT1 type: equipped with V scheme circuit breaker cabinet.
OT2 type: equipped with CB scheme circuit breaker cabinet.
Vacuum switch, vacuum circuit breaker driving mechanism:
O vacuum switch, vacuum circuit breaker operating mechanism is suitable for circuit breaker cabinet V scheme and CB scheme;
● Fuse
In cabinet F, the fuse is first installed on the fuse support and then inserted into the fuse insulation cylinder.
The three fuse insulating cylinders are located in the air box and are well sealed with the air box. When the fuse support is inserted into the insulating cylinder, the insulating cylinder is isolated from the outside world, which can ensure that it is not affected by external pollution. Any phase of the fuse can cause the striker to trigger, which drives the fast linkage mechanism to realize the load switch opening.

Functional unit size diagram (mm)

Outdoor switch station (equipped with inflatable SF6 switch unit)

● Introduction
SRM15-12 series outdoor switching posts are outdoor high-voltage electrical equipment with a rated voltage of 12/24kV. They are complete high-voltage electrical equipment composed of cable accessories, switches, electrical elements, secondary elements and boxes. They fully and flexibly use the advantages of cable connectors in series and parallel connection. They can be reliably combined according to the needs of users, realizing the characteristics of full sealing, full protection, full insulation, anti condensation, dust prevention, corrosion resistance and maintenance free, It can operate outdoors 24/7 and is selected for cable connection, tapping, and energy transfer and distribution in the power supply network.
This product is widely used in urban industrial communities, residential communities, commercial centers, mining airports, railways, wind power plants, switch stations, railways, petroleum, chemical, cement and other large-scale enterprises, as well as distribution networks in other occasions. It is particularly suitable for urban road and power grid renovation projects, saving electrical equipment investment and improving power supply reliability.
● Operating environment
Temperature: -40 ℃ to+70 ℃, please contact us if it is below -40 ℃;
O Humidity: The daily average relative humidity shall not exceed 95%, and the monthly average humidity shall not exceed 90%;
The daily average value of O saturated vapor pressure shall not exceed 2.2Kpa, and the monthly average value shall not exceed 1.8Kpa;
The altitude does not exceed 4000 meters. If it exceeds the limit, please contact us;
The surrounding air is not significantly contaminated by dust, smoke, corrosive or flammable gases, vapors, or salt mist;
The external insulation has a pollution resistance level of II and no frequent violent vibration.

Example of a typical ring network scheme

Dimensions and installation base diagram

Note that the above data is for reference only, and our company reserves the right to modify the data.

Order Instructions
Determine the product model, name code, and technical parameters.
Determine the product quantity and delivery cycle.
Other specific operating requirements.
● Name and quantity of spare parts;

Product storage and maintenance
● During transportation and loading and unloading of packaged products, inversion, strong vibration and collision are prohibited.
● The product is stored in a dry, ventilated and moisture-proof room or warehouse. Long-term storage requires lubrication protection at the transmission part, and regular
Check the environmental conditions and ensure that the product has a shelf life of 15 years.
● The products in operation are subject to a small inspection every 3-5 years, mainly to check the wear of some moving parts of the mechanism and the condition of fasteners
In addition to dust on the surface of the insulation, add lubricant to the movable part.

技术参数