XGN-40.5 Indoor gas-insulated metal-enclosed switchgear
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High voltage switchgear set
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Product Detail
XGN-40.5 inflatable cabinet is suitable for power plants, substations, box-type substations and other three-phase AC indoor single-busbar and single-busbar segmented power systems with a rated frequency of 50Hz and a rated voltage of 35kv, as a control , Receiving and distributing electrical energy.
It can be used in the construction and renovation of urban and rural power grids and construction projects with tight land use and high reliability requirements such as urban subways, light rail railways, and large high-rise buildings; it can be used in areas with particularly harsh environmental conditions and industrial fields with serious pollution The prospect is also very bright.
Use environmental conditions
1. Altitude: no more than 3000 meters;
2. Ambient temperature: upper limit +40°C, lower limit -25°C (24h average value does not exceed 35°C);
3. Relative humidity: the daily average value is not more than 95%, and the monthly average value is not more than 90%;
4. Environmental conditions: the surrounding air is not significantly polluted by corrosive or flammable gases, water vapor, etc.;
5. Earthquake intensity: no frequent severe vibration
Note: If the above conditions of use are exceeded, it will be resolved by the manufacturer through negotiation
Model and its meaning
Main technical parameters
1. Switch cabinet skill parameters
2. Maximum mechanical parameters of vacuum circuit breaker
3. Main technical parameters and mechanical characteristic parameters of three-position isolating switch XGN□-40.5
4. Technical parameters of voltage transformer JDZX8-35C1
5. Technical parameters of touchable overvoltage protector CM-35
6. Technical parameters of current transformer LMZ1-35A, LMZ1-35B
Main structural features
1. Overview
XGN□-40.5 indoor gas-insulated metal-enclosed switchgear (hereinafter referred to as "inflatable cabinet") is a high-tech product developed and produced by our company. Its technical performance meets GB/T11022 "High-voltage switchgear and Common technical requirements for control equipment" and GB3906 "3-35kV AC metal-enclosed switchgear" standards, with the characteristics of high reliability, maintenance-free, and less land occupation; the main technical parameters have reached the international advanced level.
The inflatable cabinet (also known as C-GIS) is an organic combination of SF6 or other gas-insulated GIS and air-insulated metal-enclosed switchgear manufacturing technology, and the two-phase high-voltage components are housed in a sealed metal welding shell. , and filled with SF6 gas slightly higher than the human pressure or the mixed gas of SF6 and N2 as the insulating medium, and a new type of high-voltage switchgear with cable terminals as the incoming and outgoing lines. The entire high-voltage system is in a completely closed state, completely free from external environmental conditions such as condensation, pollution, high altitude and other factors.
2. Cabinet structure
The whole inflatable cabinet is a modular assembly structure. The whole cabinet of the typical scheme (01) is composed of five modules (compartments) with independent functions, namely the circuit breaker room, the busbar room, the cable room, the mechanism (circuit breaker) Device) room, instrument room, the assembly is very convenient. The high-pressure part inflatable compartment is made of 4mm thick stainless steel plate processed by CNC machine tool and welded by welding mechanism, with less welding deformation and good air tightness; The nuts are bolted together, and each inflatable compartment is equipped with an independent pressure relief channel to maximize the protection of personnel and equipment operation. The schematic diagram of the typical scheme of the inflatable tank is shown in Figure 1.
1. Circuit breaker room
This compartment is a sealed compartment filled with sF6 gas as the insulating medium; the main switch adopts a vacuum circuit breaker (with an integrated spring operating mechanism), the vacuum interrupter is sealed in the inflatable compartment, and the operating mechanism is installed in the compartment Externally, the transmission connection between the inside and outside of the compartment is realized through the sealed bellows; the inner cone cable connector is installed at the bottom of the cabinet, which can be used as a busbar support inside the cabinet, and can also be connected to the cable outside the cabinet.
2. Main busbar room
This compartment is a sealed compartment, filled with sF6 gas as the insulating medium; the busbar room and the circuit breaker room are independent of each other, and the main busbar is connected to the circuit breaker room through a three-position isolating switch; the three-position isolating switch can realize the work , isolation, grounding and functional interlocking; built-in gas barrier insulators, the main busbar is electrically connected to the external solid insulated cable through connectors; the main busbars between cabinets are electrically connected through solid insulated cables placed outside the top of the main busbar room .
3. Cable room
This compartment is an air-insulated compartment, which is connected with the cone type cable connector at the bottom of the circuit breaker room by fully insulated and fully enclosed cables. Pass.
4. Instrument room
This compartment is a low-voltage compartment. Various control switches, status indicating devices, measuring and measuring instruments, etc. can be installed on the instrument door. Various protective relays, secondary lines, terminal blocks and air switches can be installed inside the instrument compartment. , low-voltage fuses, etc. - secondary components. The operating mechanism of the three-position isolating switch, the gas pressure sensor and the air pressure gauge in the circuit breaker room and the busbar room are also installed in the instrument room.
5. Operating mechanism room
This compartment is a low-voltage compartment with built-in circuit breaker operating mechanism, interlocking mechanism, etc.
3. Interlocking
1. Reliable mechanical and electrical interlocks are installed between the vacuum circuit breaker inside the inflatable cabinet and the three-position isolating switch, which can be operated according to certain procedures to realize the "five-proof" locking function, which is specifically reflected as follows:
A. When the circuit breaker is in operation or in the closing position, the three-position isolating switch should be locked and cannot be closed, opened or grounded;
B. During the operation of the three-position isolating switch, the circuit breaker should not be closed;
C. When the three-position isolating switch is in the grounding position, theThe high-voltage live display device on the cable side detects the status of the live side circuit, and the circuit breaker can only be closed when it is confirmed that the circuit is de-energized.
2. Operating procedures
A. Power transmission operation:
The circuit breaker was originally in the closing position, and the three-position isolating switch was originally in the grounding position
a. Operate the circuit breaker to the opening position;
b. Operate the three-position isolation switch to the isolation position;
c. Continue to operate the three-position isolating switch to the working position;
B. Power failure operation:
a. Operate the circuit breaker to the opening position;
b. Operate the three-position isolation switch to the isolation position;
c. Continue to operate the three-position isolating switch to the grounding position;
d. Detect the cable on the line side, and operate the circuit breaker to the closing position after confirming that it is de-energized.
Note: When the circuit breaker and the three-position isolating switch are in normal operation, they are remotely operated electrically, and they can also be operated locally, but the two must be interlocked: the manual operation and electric operation of the three-position isolating switch must also be Interlocked, that is, the two cannot operate at the same time.
4. One-time plan
Product structure and installation dimensions
1. Structural diagram of switchgear
2. Reference drawing of switchgear installation foundation
Order Notes
The user must provide the following information when ordering:
1. Main circuit scheme number and single-line system diagram, arrangement diagram;
2. Secondary circuit wiring schematic diagram and terminal arrangement diagram;
3. The type, specification and quantity of electrical components in the switch cabinet;
4. The material and specifications of the busbar in the cabinet shall be supplied according to the manufacturer's regulations if the user has no requirements:
5. When the switchgear is used under special environmental conditions, it should be specified when ordering;
6. If there is no requirement for the color of the cabinet, it will be provided by the manufacturer;
7. Energy storage and control of the auxiliary circuit, signal power supply voltage;
8, the purpose of each cabinet;
9. The types and quantities of spare parts and accessories required:
Main skill parameters
Dimensions
Order Notes
The user should provide the following information to the company when ordering:
1 Model, capacity, quantity, color.
2 Is it a standard product or a non-standard product (any product that does not conform to the high and low voltage electrical scheme diagram provided by the company is regarded as a non-standard product).
3 Transformer performance model, connection group, decomposition range.
4 ring network or terminal, the type of cable head, the cross-section of the incoming cable, whether it has a lightning arrester, whether it has a fault indicator and a computer indicator.
5 Low-voltage scheme number, low-voltage circuit breaker model, specification. Requirements If it is low-voltage metering, whether it is individually sealed, low-voltage transformer model and accuracy requirements, active meter, reactive meter or comprehensive tester, electronic meter model specification requirements.
Keywords: high voltage | low ark | box complete sets of equipment
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Online message
E-mail：sales@hfliyuan.com
Tel：86-0551-62578999
Add: Liyuan High-tech Industrial Park, intersection of Tangkou Road and Bagongshan Road, Taohua Industrial Park, Jingkai District, Hefei City
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