Year1
- 额定电压：
- 12KV
- 额定电流：
- 630A
- 额定频率：
- 50HZ
Type armored removable AC metal-enclosed switchgear. It is suitable for three-phase AC/rated voltage power systems. It is mainly used in power plants, substations, industrial and mining enterprises and high-rise buildings. , to receive and distribute electrical energy and to control, protect and monitor circuits.
Product Features:
Type switchgear has various functions to prevent misoperation, including preventing the handcart from being moved with load, preventing the grounding switch from closing the circuit breaker in the closed position, preventing the grounding switch from being powered on, and preventing the accidental entry of live electricity. Compartments and other functions. The switch equipment is equipped with a series of mid-mounted high-voltage AC vacuum circuit breakers and sealed vacuum switches with excellent performance. The secondary circuit of the switchgear is equipped with advanced and reliable control and protection element busbars using heat shrinkable insulating materials or epoxy coating insulation methods, optimizing the shape of the electrodes, and the cabinet structure is compact. The switchgear is technologically advanced, has stable performance, reasonable structure, and is easy to use. Convenient, safe and reliable power distribution equipment.
Main technical parameters:
< Serial number
c=> Project
Unit
c=> Parameter
c=> Rated voltage
c=>
c=> Rated frequency
c=> /
=>
=> Rated insulation level< br/> Lightning impulse withstand voltage
=>
=> Phase to ground
=> Isolation fracture
Power frequency withstand voltage
/>
Auxiliary control loop power frequency withstand voltage
c=>
c=> Rated current
c=> ,
c=> Rated short-circuit breaking current
c=>
c=> .
c=> Rated short-circuit making current (peak value)
c=>
c=>
c=> Rated short-time withstand current
c=>
c=> .
c=> Rated peak withstand current
c=>
c=>
c=> Rated voltage of auxiliary control circuit
c=> DC or AC/
c=> Protection level
c= > (The circuit breaker room door is open or the compartment is)
c=> Overall dimensions (width*depth*height)
c=> **
c=> **
c=> Weight
c=>
Transportation, installation and commissioning
. Transportation and storage precautions Matters:
) The product is not allowed to tip over, invert or suffer severe vibrations during loading, unloading and transportation. The sling should be placed in the designated part of the packaging box or switchgear
) Protect it from rain and prevent the product from getting damp
br/>) When the switchgear arrives at the site, the consignee should check whether the outer packaging of the goods is complete and whether the goods are damaged or missing. If necessary, the supplier should be notified to come to the site for joint inspection
) The products should be placed smoothly , Do not disassemble electrical components and parts at will.
. Installation of switchgear:
) The surface of the basic frame should be flat and higher than the floor. The allowable tolerance for the flatness and straightness of the frame is/
Adjust the switchgear one by one on the basic frame. Positions are connected one after the other without exceeding the verticality. When there are more switch cabinets than units, it is best to assemble them from the middle. The switch cabinet and the basic frame are connected by bolts or welding
) In order to facilitate the installation of the main busbar, the cabinet installation of switchgear should be carried out alternately with the main busbar installation
Use pre-installed grounding busbars to connect the switches cabinet by cabinet. The main grounding bus of the equipment is connected to the main grounding bus of the switchgear and the grounding pole of the power distribution room
) After the installation of the primary cable and the secondary cable is completed, the gaps around the cable penetrations must be sealed, and the sealing plates and Partitions.
. Debugging of switchgear:
Check the isolating contacts and insertion depth and whether the contact is good:
) After the switchgear is installed, an operating experiment must be carried out, and the circuit breaker, handcart and grounding switch must be manually operated. and other components, and check the operation of all procedures of the mechanical interlock. The movement must be accurate and flexible without jamming
) Check whether the mechanical characteristics of the circuit breaker meet the requirements, and conduct an operation test according to the specified maximum and minimum operating voltage. If it is satisfactory, The points should be normal
) Conduct a power-on test on the secondary circuit to check the correctness of the protection, control and signal circuit operations
) Measure the main circuit resistance. The circuit breaker's circuit resistance should not exceed the standard value
/> ) Main circuit phase-to-phase and phase-to-ground power frequency withstand voltage test shall be carried out in accordance with handover acceptance regulations
) Secondary circuit insulation strength test/. There should be no breakdown and flashover phenomenon. For the electronic device part in the secondary circuit, the test voltage must be negotiated between the user and the manufacturer.
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