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Urumqi Nantianya Electrical Complete-sets Equipment Co.,Ltd.
Add : 366 Tongbaishan Street, Economic and Technological Development Zone, Urumqi
Phone : 86-:13809951165
Service Phone :0991-4653766
Phone:0991-4658766
Fax:0991-4611577

HXGN15-12 Indoor AC high voltage ring network switchgear





■|Overview
HXGN15-12L/630-20 and HXGN15-12RL/1250- -31.5 indoor AC high voltage ring network switchgear (hereinafter referred to as "ring network cabinet") is new - replace the sulphur hexafluoride load switch as the main switch The metal-enclosed switchgear, the whole cabinet is air-insulated, and adopts sensing technology and the latest protection relay components, and the design level has reached the international leading level. The ring network cabinet has the characteristics of simple and compact structure, flexible operation, reliable and effective interlocking. It is mainly used for three-phase AC rated frequency 50--60Hz, rated voltage 12kV ring network power supply or dual-radiation power supply system, as the control of the circuit. protective device. It is especially suitable for small secondary distribution stations, box-type substations, opening and closing stations, industrial and mining enterprises, urban residential quarters, airports, hospitals, railways, tunnels, high-rise buildings and other power systems, which can provide safe and reliable distribution automation for power users. Service. Different technical solutions are available for different applications and different users.
Product model and its meaning
 
Normal use environment
1. Altitude: no more than 1000m;
2. Ambient temperature: - -25 ° C ~ +40 ° C;
3. Relative humidity of air: the daily average is not more than 95%, and the monthly average is not more than 90%;
4. There is no serious pollution in the surrounding air, such as dust, smoke, corrosion, flammable gas, gasoline and salt;
5. Earthquake intensity: 8 degrees.


Main structure of ring network cabinet

The ring network cabinet is composed of a busbar room, a three-station load switch room (or circuit breaker room), a cable room, an operating mechanism, an interlocking mechanism, a low-voltage control room, and a measuring or measuring circuit. Each compartment is separated by a steel plate to prevent the faulty part from affecting the adjacent room. It complies with GB3906.3 ~ 35kV AC metal-enclosed switchgear, I EC60298 AC metal-enclosed power distribution device and control equipment (1 kV- -52kV) (1 990) and other standards.
1) Busbar room
The busbar compartment is arranged in the upper part of the cabinet, in which the main busbars are connected together and run through the entire row of switchgear cabinets. The busbars are horizontally arranged and can be easily expanded. .
2) Load switch room
The load switch room is equipped with a three-station load switch. The outer casing of the load switch is made of epoxy resin. The SF6 gas is filled with arc extinguishing and insulating medium. Two transparent thermoforming products are arranged at the leading end of the operating shaft. A plastic end cap through which the state of the contacts can be observed. SF6 gas density meter or gas density device with alarm contact can be installed in the switch room according to user requirements.
3) Cable room
The cable compartment is mainly used for cable connection, so that the single-core or three-core cable can be connected with the simplest unshielded cable head, and the sufficient space can also accommodate components such as lightning arresters, current transformers, voltage transformers, and lower grounding switches. Designed according to the standard, the door has a window and a safety interlock. The cable compartment bottom plate is provided with a sealing cover and a cable clamp of a suitable size with a support frame. The front frame of the cable compartment bottom plate can be removed to facilitate cable installation and removal.
4) Operating mechanism, interlocking mechanism and low pressure control room
The low pressure chamber with interlocking also functions as a control panel. The low pressure chamber is equipped with a spring operating mechanism with position indicator and mechanical interlocking device. It can also be equipped with auxiliary contacts, trip coils, emergency trip mechanism, capacitive live display device, key lock and electric operating device, and low pressure room space. It can also be equipped with secondary components such as control loops, measuring instruments and protective relays.
technical parameter 
The main technical parameters are shown in Table 1.
 
■Use and operation
1. Operating sequence of the operating mechanism
1) Manual operation of the load switch
a load switch closing
Place the load switch position indicator in the position shown in (1) of Figure 5. Place the selector in the operating position, as shown in (2) in the figure, and check that the notch of the shaft should be downward, as shown in (3) in the figure. When the fuse is blown or electrically operated to open the switch, when the rotary notch is in the left position, the operating handle must be inserted into the hole, and the rotary groove should be turned counterclockwise to the downward position (with "beep"). Insert the operating handle into the hole, align the guide key with the shaft notch, and turn it 80 clockwise. Left and right until it is closed. If the switchgear is equipped with a double-spring operating mechanism, the torque must be increased when the end point is rotated until the switch is finally closed. The operation should be completed continuously.
b. Opening of the load switch
Place the load switch position indicator in the position of (1) in Figure 6. The selector is placed in the position of (2). Check that the shaft should be at the position of (3). Insert the operating handle into the hole, align the guide key with the shaft notch, and turn 80 counterclockwise. Left and right until the switch is turned off.
c load switch operation to the ground position
Place the load switch position indicator in the position of (1) in Figure 7. The selector is placed in the inspection (test) position of the illustration (2). Check that the handle knob slot should be in the down position, as shown
(3) The location. Insert the operating handle into the hole, align the guide key with the shaft notch, and turn 80 counterclockwise. Left and right until the switch moves to the grounded position.
d The load switch is operated from the grounding position to the opening position to place the load switch position indicator in the grounding position, as shown in Figure 1
(1). The selector is placed in the inspection (test) position as shown in
(2) in the figure. Check that the operating handle shaft notch is in the vertical position. As shown in
(3) in the figure. Insert the operating handle into the hole, align the guide key with the shaft notch, and turn it 80 clockwise. Left and right until the switch moves to the open position.
2) Electric operation of the load switch
The operating mechanism can take the local or remote electric operation to complete the closing and closing actions of the load.
2. The cable compartment door is open
When the switch is in the grounded position and the selector is in the open position, the cable compartment door can be opened and removed. Tip: Open the door and lift the door to lift the door.
Close the door first by lifting the door on the sill - then close the door and try to push the door down. Opening and closing of the operating room door: Turn the handle clockwise, the door can be opened, and the door can be closed by turning counterclockwise.
3. Maintenance and maintenance
The switchgear is maintained and maintained under normal conditions - the general time limit is three years. The single-elastic and double-elastic operating mechanisms of the load switch require no maintenance and do not require any lubrication. The relay protection device shall be verified according to the requirements of the manufacturer before it is put into operation.
Specific maintenance measures are carried out as follows:
a. Tighten all electrical connectors (main busbars, switches, cables, meters, etc.) as required in the installation instructions.
b. Clean all parts (load switch, line switch, trip mechanism, motor, etc.) with a vacuum cleaner and perform visual inspection.
c. Perform one-time closing and opening operation on all switches, including grounding switch.
d Turn on the auxiliary control power supply (do not give the remote control signal) for an electrical sequence operation.
e. Clean the busbar compartment and cable compartment. Open the upper part of the cabinet and clean the insulation part of the load switch and the busbar.
Wipe clean with a clean soft cloth. Use a small amount of alkaline cleaner to clean dirt and dirt. Then use a cleaning cloth to wash with water. Finally, dry the surface with a dry cloth and clean the cable compartment (bottom of the load switch, transformer, busbar and line switch, etc.) in the same way.
Note: Do not use chloroform, carbon tetrachloride or various types of alcohol for cleaning. Acceptance requirements: All components should be in good condition, and there should be no obvious discharge marks, and there should be no obvious overheating at the joint contact surface. Any unqualified parts should be replaced.
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The following technical information must be provided when ordering by the user:
1. Main circuit wiring scheme number and main circuit diagram, arrangement diagram, floor plan
2. The schematic diagram of the secondary circuit of the switchgear;
3. Models, specifications and quantities of all electrical components in the switchgear;
4. The material, specification and quantity of the main busbar and busbar of the switchgear;
5. If you need to set the low voltage box, you should explain it;
6. Summary of electrical equipment;
7. The switchgear should be used when it is used under special environmental conditions;
8. Types and quantities should be proposed when other or excess accessories and spare parts are required.
Basic size of the ring network cabinet