KYN28-12 Metal-clad Withdrawable Enclosed switchgear power cubicles
distribution switchboard air insulated type switchge
Product overview
KYN28 indoor metal-clad withdrawable switchgear(hereinafter short as switchgear) which is
for distributing and accepting 3-phase AC electricity (3-12 kV, 50 Hz) distribution system,
single-bus and single-bus sectionalized system. It is universally applied within power
transmission of middle/small generators in power plants; power receiving, transmission for
substations in power distribution and power system of factories, mines and enterprises, and
starting of large high-voltage motor, etc. The switchgear compliant with IEC298,GB3906-9.
Besides, it also can control, protect and monitor the circuit.
Simple and effective lock system to prevent misuse. Reliable FIVE-PREVENTION interlock
can effectively prevent from mal-operation and entrance into energized compartments.
1, Prevent pushing and pulling circuit breaker handcart with loads;
2, Prevent circuit breakers from mal-operation;
3, Prevent the circuit breaker from closing and connecting when earth switch in live condition;
4, Prevent straying into electrified compartment;
5, prevent connecting error of grounding switch while live.
| Item | Unit | Parameters |
| Ratedvoltage | KV | 3,7.2,12 |
| Ratedcurrent | | 630,1250,16002500,3150,4000* |
| Ratedshortcircuitbreakingcurrent | KA | 25,31.5,40 |
| Ratedshortcircuitswitchingcurrent | 63,80,100 |
| Ratedshort-yimewithstandcurrent(4s) | 25,31.5,40 |
| Ratedpeakwithstandcurrent | 63,80,100 |
| Ratedfrequency | Hz | 50 |
| Ratedinsulationlevel | 1minpowerfrequencywithstandvoltage | KV | 42 |
| Lightingimpulsewithstandvoltage | 75 |
| controlcircuitvoltages | AC | V | 110,220,380 |
| DC | V | 110,220 |
1. The structure of the cabinet is assembled, and the circuit breaker adopts a handcart floor type structure;
2. Optional: the joint design of vacuum circuit breaker (ZN85-40.5/3AV3), Xiamen Huadian pole sealed vacuum
circuit breaker (VEP-40.5), AREVA SF6 circuit breaker (FP4025D), Schneider SF6 (SF2), circuit breaker with
circuit breaker with interchangeability, easy replacement, convenient.
3. The handcart frame is provided with a screw rod, a nut propelling mechanism, an overrunning clutch, and the
handcart can be easily moved, and the propulsion mechanism can be prevented from being damaged by misoperation.
4. The interlock of the main switch, the handcart and the door of the switch adopts the forced mechanical locking
mode to meet the "five safety" interlocking function;
5. Fast earthing switch is used for circuit short connection and earthing;
The switchgear cabinet is designed according to the standard of metal clad enclosed switchgear in GB3906 and IEC298.
Overall the cabinet and take part (CART) is composed of two parts, the body structure adopts aluminum zinc coated sheet
or galvanized plate bolted composite molding, metal plate isolation switch internal separation for the circuit breaker room,
main bus chamber, a cable chamber and the relay control room, and all the metal parts are reliable grounding cabinet
main loop system of each isolation are independent of pressure release channel in the indoor cable can set 10*60mm2
grounding bus.
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50Hz Frequency Metal Clad Switchgear Electrical Switch Cabinet 630A / 1250A Images
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