ERFA Industries Group
ERFA Industries Group Xian ERFA Switchgear under ERFA Industries Group
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Kyn28-12 (Z) (GZS1) AC Metal-Clad Withdrawable Switchgear
KYN28-12(Z)(GZS1) AC metal-clad withdrawable switchgear
General description
KYN28(GZS1) type moveable metal-clad switchgear is three-phase A.C 50Hz indoor distribution equipment with voltage of 3.6~12kV. It is used for power plant to transmit power and used for electricity system, industrial and mineral enterprise to receive and distribute power as well as to control high voltage generator which is frequently started. It can meet the standard requirements of GB3906, DL404, IEC-298 etc.And it has the function of the preventing wrong operation for circuit breakers, preventing move truck with load,preventing opening(closing)earthing switch with charged, preventing earthing switch transmitting power in earthing position and preventing entering into live compartment.
Applying ambient conditions
Ambient temperature:The max temperature should be +40ºC, the min temperature should be -15ºC.
The height above sealevel should be no higher than 1000m.
Relative humidity:daily average relative humidity≤95%,monthly average relative humidity≤90%
Earthquake intensity:not exceed 8 degrees
Saturated vapour pressure:daily average value≤2.2kPa,monthly average value≤1.8kPa
It should be used in the place where it is free from fire,explosion,serious filth,chemical erosion and violent vibration.
Main characteristics
The enclosure is made of aluminum-zinc coated sheet processed by bending several times.
All operations should be done under the door closed.
The high protection degree can avoid in gression of substance or insectsenter.
Wrong operation can be avoided due to its simple and effective"FIVE PROVENTION".
Shaanxi Longxiang can be matched with the production of the VIB series or VS1 series vacuum circuit breaker.
For the truck has good interchangeability, it is easy to change vacuum circuit breakers.
For saving space, the switchgear can be installed against the wall and maintained from the front side.
There are enough space for cables.
Instant earthing switch can be used for earthing operation and short circuiting operation.
It can be separately equipped with heater inside the VCB compartment and cable compartment to prevent condensation and erosion.
It conforms to GB3906, DL404 and references to the international stand and IEC-298.
The main technical specification of the cubical switchboard
| No. | Name | Unit | Data | |
| 1 | Rated voltage | kV | 3.6 7.2 12 | |
| 2 | Rated current | A | 630 1250 1600 2000 2500 3150 4000 | |
| 3 | rated frequency | Hz | 50 | |
| 4 | rated short-time withstand current | kA | 16 20 25 31.5 40 50 | |
| 5 | rated peak withstand current | 40 50 63 80 100 125 | ||
| 6 | rated power frequency withstand voltage | pole to pole pole to earth | kV | 42/1min |
| across interrupter | 48/1 min | |||
| 7 | rated lighting impluse withstand voltage | pole to pole pole to earth | 75 | |
| across interrupter | 85 | |||
| 8 | rated short-timeduration | s | 4 | |
| 9 | degree of protection | IP4X | ||
Main technical specification of vacuum breaker
| No. | Name | Unit | Data | ||
| 1 | Rated voltage | kV | 3.6 7.2 12 | ||
| 2 | Rated current | A | 630 1250 1600 2000 3150 4000 | ||
| 3 | rated short circuit breaking current | kA | 16 20 25 31.5 40 50 | ||
| 4 | rated short-time withstand current | kA | 16 20 25 31.5 40 50 | ||
| 5 | rated peak withstand current | 40 50 63 80 100 125 | |||
| 6 | rated power frequency withstand voltage | pole to pole pole to earth | kV | 42/1 min | |
| across interrupter | 48/1 min | ||||
| 7 | rated lighting impluse withstand voltage | pole to pole pole to earth | 75 | ||
| across interrupter | 85 | ||||
| 8 | rated short-timeduration | s | s | ||
| 9 | opening time | ms | 20<=t<=65 | ||
| 10 | closing time | ms | 20<=t<=75 | ||
| 11 | breaking operations of rated short circuit breaking current | cycles | 30(<=31.5kA) | 20(>=40kA) | |
| 12 | mechanical endurance | cycles | 20000(<=31.5kA) | 10000(>=40kA) | |
Main technical specification operation mechanism
| Name | Unit | Data | |
| rated operation voltage | closing coil | V | DC220,110 |
| opening coil | AC220,110 | ||
| power of coil | closing coil | WorVA | 245 |
| opening coil | |||
| power of energy-stored motor | W | 50 | |
| rated voltage of energy-stored motor | V | DC220,110 AC220,110 | |
| charging time | s | <=10 | |
Fig,1: Construction drawing for switchgear
