KYN28(GZS1) type moveable metal-clad switchgear is three-phase A.C 50Hz indoor distributing 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 the earthing position and preventing entering into live compartment.
Main characteristics of KYN28(GZS1) metal-clad switchgear:
1.The enclosure is made of aluminum-zine coated sheet processed by bending several times.
2.All operations should be done under the door closed.
3.The high protection degree can avoid in gression of substance or insects enter.
4.Wrong operation can be avoided due to its simple and effective “FIVE PROVENTION”.
5.It can be equipped with ZN63A and VD4 type vacuum circuit breakers.
6.For the truck has good interchange ability, it is easy to change vacuum circuit breakers.
7.For saving space, the switchgear can be installed against the wall and maintained from the front side.
8.There are enough place for connection cables
9.Instant earthing switch can be used for earthing operating and short circuiting operation.
10.It can be separately equipped with heater inside the VCB compartment and cable compartment to prevent condensation and erosion
11.It conforms to GB3906, DL404 and references to the international standard IEC-298.
Applying ambient conditions of KYN28(GZS1) metal-clad switchgear:
Ambient temperature: The max temperature should be +40℃, the mix temperature should be -15℃.
Relative humidity: The average humidity of a day should be no more than 95%, the average humidity of a month should be no more than 90%.
Height above the sea level: ≤1000m.
The earthquake intensity should be no more than 8 degree.
Saturated vapour pressure: The average saturated vapour pressure of a day should be no more than 2.2×10-3Mpa, the average saturated vapour pressure of a month should be no more than 1.8×10-3Mpa.
It should be used in the places where is free from the fire, explosion, serious filth, chemical erosion and violent vibration.
The main technical specification of the cubical switchboard:
3.6 7.2 12
630 1250 1600 2000 2500 3150 4000
Rated short-time withstand current
16 20 25 31.5 40 50
Rated peak withstand current
40 50 63 80 100 125
Rated power frequency withstand voltage
Pole to pole
Pole to earth
Rated lightning impulse withstand voltage
Pole to pole
Pole to earth
Rated short-time duration
Degree of protection
Construction drawing for switchgear:
Rated current of small branch bus-bar is 1250A
and the below short-circuit breaking current is 31.5kA
Rated current of small branch bus-bar is 1600A and above