8DJH-12 gas fully insulated ring network switchgear
8DJH switchgear is a new type of SF6 gas fully insulated metal enclosed switchgear designed and produced by combining SIEMENS advanced technology and our many years of experience in manufacturing switchgear. The product adopts modular design. All live parts and switches are enclosed in a stainless steel shell, which is not affected by the external environment. It has the characteristics of safety, reliability, compact structure, maintenance-free, and long life.
The product has passed the type test certification of the national high-voltage electrical apparatus test center, and can be widely used in power distribution rooms and switching stations of substations, power systems and public facilities. It can also be used in high-rise buildings, airports, ports, rail transit, petrochemicals, and coal mines. In the secondary power distribution system with harsh environment.
- Product Description
- Technical features
- Main technical parameters
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- Commodity name: 8DJH-12 gas fully insulated ring network switchgear
8DJH switchgear is a new type of SF6 gas fully insulated metal enclosed switchgear designed and produced by combining SIEMENS advanced technology and our many years of experience in manufacturing switchgear. The product adopts modular design. All live parts and switches are enclosed in a stainless steel shell, which is not affected by the external environment. It has the characteristics of safety, reliability, compact structure, maintenance-free, and long life.
The product has passed the type test certification of the national high-voltage electrical apparatus test center, and can be widely used in power distribution rooms and switching stations of substations, power systems and public facilities. It can also be used in high-rise buildings, airports, ports, rail transit, petrochemicals, and coal mines. In the secondary power distribution system with harsh environment. -
Modular design
- Unit cabinets and combination cabinets can be flexibly combined and expanded (no need to fill gas on site)
- Provide 4 different heights of low-voltage chamber can be connected to the switch cabinet by multi-core plug
Technical advantages
- The three-position switch is equipped with load breaking function, and the grounding switch has short-circuit closing capability;
- Transformer protection can choose load switch fuse combination electrical appliances and vacuum circuit breaker with relay protection scheme;
- The ring network cabinet and circuit breaker cabinet with various cable connection modes can adopt bolt type T head, and the transformer can adopt plug-in elbow type head and bolt type T head;
- Downward release of gas pressure (upward release of pressure by absorption system)
- Reliable wall installation
Safe and reliable
Personal Safety
- The cabinet body is air-tight and can be safely touched;
- Logical mechanical interlocking can prevent misoperation, and the closing operation can only be carried out when the cabinet door of the switch cabinet is closed; and the high-voltage fuse and cable connector can only be touched when the feeder is grounded;
- Live indicator to detect safe isolation from power supply
- SF6 gas operation is not involved in installation operation expansion and replacement; safe operation
- Lifetime sealing, gas box and casing are all laser welding, the whole cabinet can be safely touched and the operating mechanism can be conveniently operated outside the gas box;
- The mechanical position indication is integrated with the panel simulation diagram, which is more convenient and intuitive; reliability
- After strict type test and factory test verification
- Standardized strict CNC production process;
- More than 600000 8DJH switchgear cabinets have been successfully operated, fully verifying the gas-tight welding
Reliability
- The feeder side grounding is realized through the fast grounding switch;
Maintenance-free
- The gas box is made of stainless steel plate by laser welding, and the casing used for electrical and mechanical connection is also laser welded to avoid the use of sealing ring;
- The switchgear adopts SF6 gas insulation, and the high-voltage part is completely hermetically welded, and is not affected by external environment such as pollution, humidity and small animals;.
- The design of life-long seal ensures higher power supply reliability, higher cost performance, lower operating costs and maintenance-free.
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Electrical parameters of switchgear, switching capacity and grade of switchgear Serial Number
1
Project Unit Unit R T Unit Unit L Rated voltage kV 12 12 12 2 Rated rated absolute frequency and edge level rated strike' : Short-time work Interphase, relatively 42 42 42 defecate voltage Isolation fracture 48 48 48 : Lightning Interphase, relatively 95 95 95 I by voltage Isolation fracture 110 110 110 3 Rated frequency Hz 50 4 Rated current A 630 200 630 5 Rated short-time withstand current Max. kA/s 25/4 / 25/4 6 Rated peak withstand current Maximum kA 63 / 63 7 Rated short-circuit closing current Maximum kA 63 80 63 8 Rated short-circuit breaking current Maximum kA / 31.5 25 9 Rated transfer current A / 1750*） / 10 Rated active load breaking current A 630 / / 11 Rated closed-loop breaking current A 630 / 630 12 Mechanical life Load Switch/Circuit Breaker Times 2000 2000 10000 Isolating/earthing switch 2000 2000 2000 13 Inflation pressure (20 ℃) Rated inflation pressure kPa 150 150 150 Minimum operating pressure 130 130 130 14 Protection level Gas box shell/low pressure chamber IP67 IP67 IP67 IP3X/IP4X) IP3X/IP4X) IP3X/IP4X what ■ choice) 15 Internal Arcing Class IACAFLR I/O 21/1
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