General instruction
We are KYN28- 12 medium voltage switchgear manufacturers , we produce KYN28- 12 medium voltage switchgear. It is applicable to three phade AC 50HZ ,3 .6~ 12kV power system ,it is used for receiving and diteibuting electric energy and contrlling , protecting ang supervising the circuit.
Standards conformity of the product
GB3906 (AC metal-enclosed switchgear for rated voltage of 3-35kV)
GB/T11022 (Common specifications for high-voltage switchgear and controlgear standards)
IEC60298 (AC metal-enclosed switchgear and controlgear for rated voltage above 1kV and up to and including 50kV)
DL/T404(Indoor AC high voltage switchgear panel)
Normal working condition
Ambient air temperature:maximum temperature +40℃,
minimum temperature -15℃.
Humidity condition: daily average relative humidity: ≤ 95%,daily average vapor pressure shall not exceed 2.2kPa; Monthly average relative humidity:≤ 90%, Monthly average vapor pressure shall not exceed 1.8kPa.
Altitude: Below 1000m .
Earthquake intensity: Lower than 8 degrees .
The ambient air shall not be polluted by distinctive corrosive or combustible gas , vapor etc .
Places free of frequent excessive vibrations .
The user shall negotiate with manufacturer if the equipment is used beyond the normal working conditions described in GB3906 .
Main Technical Parameters
|
Items |
Unit |
Data |
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|
Rated voltage |
kV |
3 .6 ,7 .2 , 12 |
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|
Rated frequency |
Hz |
50 |
||
|
Rated current of circuit breaker |
A |
630 , 1250 , 1600 ,2000 ,2500 ,3150 |
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|
Switch gear rated current |
A |
630 , 1250 , 1600 ,2000 ,2500 ,3150 |
||
|
Rated short time withstand current |
kA |
16 ,20 ,25 ,31 .5 ,40 |
||
|
Rated peak value withstand current (peak value) |
kA |
40 ,50 ,63 ,80 , 100 |
||
|
Rated short circuit dropout current |
kA |
16 ,20 ,25 ,31 .5 ,40 |
||
|
Rated short circuit switch-on current (peak value) |
1min frequency withstand voltage |
kA |
40 ,50 ,63 ,80 , 100 |
|
|
Rated insulation level |
Lightning impulse withstand voltage(peak value ) |
Inter-electrode , inter- electrode and earth |
kV |
24 ,32 ,42 |
|
Inter-fracture |
kV |
24 ,32 ,48 |
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|
Inter-electrode , inter- electrode and earth |
kV |
40 ,60 ,75 |
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|
Inter-fracture |
kV |
46 ,70 ,85 |
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|
Degree of protection |
Enlosure is IP4X, when the circuit breaker room door is closed, and it is IP2X when the door is open. |
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Product Details
Structure Features
- Switch gear structure please see to figure1.
- Entirely metal armored , assembly structure , wide range of assembly schemes.
- The cabinet body adopts imported aluminized and galvanized sheet steel , which is processed with CNC machine tool and advanced multiple flanging technique and connected with excellent nuts and bolts of high intensity, providing high precision , anticorrosion , small weight , high intensity, and good parts versatility.
- It can assembly home produced VS1 series or the imported VD4 series vacuum circuit breakers , with wide applicability , high reliability , free of maintenance for long years.
- Operation and testing positions will be established for the handcart , and both positions are equipped with safe and reliable positioning device and display device.
- All kinds of handcarts shall change in a modulus cordwood manner, so as ensure that handcarts of same kind can be freely exchanged , while carts of different kinds are strictly stopped from entering.
- Fandcarts are transported with special use carrier loader,it is easy and flexible to operate.
- The cable room can be installed as many as 9 single-core cables .
- Highly reliable interlocking device fully meets the requirements of "five prevention ".
- There is pressure relief channel in each high voltage room , so as to ensure personal safety.
- The front door is installed with a observation window to check the operating state of the components inside the room.