summary
XGN2-12 box type fixed metal enclosure switch The equipment (hereinafter referred to as switchgear) is only used for receiving and distributing electric energy in 3.6KV, 7.2KV, 12KV three-phase AC 50HZ indoor system, especially suitable for occasions with frequent operation. The switch cabinet complies with the national standard GB3906 and all standards IEC298, and has strict "five prevention" locking function.
Main switch adopts ZN28 series sub packaged vacuum circuit breakers, vacuum contactors, and disconnectors are GN30-10 rotary and GN22-10 high current disconnectors.
Meaning of model
X G N 2-12 Z
|| | | | | _____ Vacuum circuit breaker
|Rated voltage
|| | | _________________ Design No
|| | _______________________ Indoor
|| ______________________________ Fixed
|___________________________________Box type
Normal enabling condition
1. Ambient air temperature: - 15 ℃~40 ℃;
2. Altitude: 1000m and below;
3. Humidity: the daily average value is not more than 95%, and the daily average value of water vapor pressure is not more than 2.2KPA; The monthly average value is not more than 90%, and the monthly average value of water vapor pressure is not more than 1.8KPA;
4. Earthquake intensity: not more than 8;
5. Places without obvious pollution such as corrosive or combustible gas.
Note: Special requirements can be negotiated with the company
technical parameter
Rated voltage KV 3.6、7.2、12
Rated current A 360~3150
Rated short-circuit breaking current KA 20、25、31.5、40
Rated short-circuit making current (peak value) KA 50、63、80、100
Rated withstand current (peak value) KA 50、63、80、100
Rated short-time withstand current KA 20、25、31.5、40
Rated insulation level: 1. 1min power frequency withstand voltage
a、 Comparison between rooms and ground KA 24, 32, 42
b、 Between fractures KA 24, 32, 48
2. Lightning impulse withstand voltage
a、 Comparison between rooms and ground KA 40, 60, 75
b、 Between fractures KA 46, 70, 85
Protection grade: IP2X
Main wiring type: Single bus section and single bus with bypass
Operating mechanism mode: electromagnetic, Spring Energy storage
Outer line size (width × depth × height) mm: 1100 × 1200 × 2650
weight kg： ≈700
install
The dynamic load generated by the vacuum circuit breaker during opening and closing is about 7840N upward and downward. The design basis is to estimate the foundation stress.
The construction of switchgear installation foundation shall comply with Relevant regulations in "Technical Code for Construction and Acceptance of Electric Power Construction".
Installation procedures and precautions:
a. Use specific transportation tools such as cranes Forklift Etc., forbidden to use roller Or crowbar.
b. Place the switchgear on the foundation in order of arrangement, adjust the straightness, perpendicularity and levelness of the switchgear group, and fix the switchgear on the foundation Channel On. Fix the cabinets with suitable bolts.
c. Install the main bus: open the top cover plate of the bus room for installation. After installation, fasten the top cover plate. When connecting the bus, the contact surface should be flat and free of dirt. The dirt should be cleaned up and coated with power compound grease to enhance the conductivity.
d. Install the primary cable: after the cable head is made, fix the cable head on the support. The contact surface between the cable and the bus should be flat. The contact surface can be connected after being coated with power compound grease. After the cable construction is completed, the cable chamber and cable trench should be sealed with a partition.
e. Install the secondary cable: the cable enters from the bottom of the left side of the cabinet, enters the relay room from the side wall, and is connected to the corresponding terminals. During construction, attention should be paid to the cable number and terminal number to avoid missing or wrong penetration. After the construction of the secondary cable, attention should be paid to not forget to cover the cable hole.
f. Connect the indirect grounding bus of the cabinet to make the grounding bus in the arrangement direction of the switch cabinet connected as a whole, check whether the working grounding and protective grounding are missing, whether the grounding circuit is continuous, and the resistance of the working grounding should not be greater than 10 ohms, and the resistance of protective connection shall not be greater than 4 ohms.
instructions
1. Power failure operation
First disconnect the circuit breaker, then pull the mechanical locking to At the "breaking locking" position, the lower disconnector and the upper disconnector are respectively disconnected. If there is a grounding switch, it is also necessary to make the grounding switch in the closing position, pull the mechanical locking to the "maintenance" position, first open the front door, take out the key to open the rear door, and after the power cut operation is completed, the switch cabinet can be maintained and overhauled.
2. Power transmission operation
When power transmission is required after maintenance, the rear door shall be closed and locked, the key shall be taken out and turned to the remote position, and the mechanical locking shall be turned to After the "breaking locking" position, make the grounding switch in the breaking state, and successively close the upper disconnector and the lower disconnector. After the mechanical locking is pulled to the "working" position, the circuit breaker can be closed.
maintenance and overhaul
1. After the switch cabinet is put into operation, maintenance work:
A、 Observe the main bus and the bus at the electrical connection. If the bus is overheated and discolored, repair it;
B、 Observe whether the lighting, control and signal power supplies are normal;
2. Overhaul
Troubleshooting: in order to prevent operation with faults and the expansion of accidents, when a fault is found or determined to be imminent, the fault part shall be overhauled immediately and the fault shall be eliminated in time;
Regular maintenance shall be carried out according to the operation regulations, and the maintenance contents are as follows:
A、 Remove the dust from all parts, especially the dust and dirt on the insulation surface;
B、 The maintenance procedure lock and mechanical interlock shall be flexible and reliable, and the procedure shall be correct;
C、 Carry out maintenance and commissioning according to the provisions of circuit breakers, disconnectors, operating mechanisms and other electrical appliances;
D、 Check whether the electrical contact parts and contact conditions are good, and check whether the grounding circuit is continuous;
E、 Fasten the screws and pins at all parts;
Ordering Instructions
The following information shall be provided when ordering:
1. Primary system diagram and layout plan;
2. Electrical schematic diagram and terminal arrangement diagram of auxiliary circuit;
3. Model, specification and quantity of electrical components of switchgear;
4. Specification and material of main bus and branch bus;
5. Name and quantity of spare parts;
6. Special requirements shall be negotiated with our company.
The company also supplies similar products of the above products: electrical equipment, power equipment, high and low voltage electrical appliances, etc.
※ If you have any questions about the information of XGN2-12 high-voltage switchgear (drawing? Size?), please contact the company further to obtain more information about XGN2-12 high-voltage switchgear (drawing? Size?). The company's products are shipped to the mainland, the Middle East, Africa and other regions. Customers are welcome to inquire and order.
