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KYN28A-12 Withdrawable Switchgear

The KYN28A-12 withdrawable switchgear uses ABB's GZS1 technology for reference and it has small size. It is used for receiving and distributing electric power in the AC three-phase single-bus power systems with the rated voltage of 3.6 to 12 KV and the rated frequency of 50Hz. This power distribution equipment is used indoors.

Service Environment
1. The ambient air temperature is from -10℃ to 40℃.
2. The ambient air should be free from the pollution of corrosive gas, water vapor, etc.
3. The daily average relative humidity is less than 95% and the monthly average value should not exceed 90%. When the temperature drops dramatically in the highly humid period, condensation is allowed to produce.
4. The altitude should not exceed 1,000 meters. Otherwise, special instruction is required when ordering.
5. This withdrawable switchgear can be used in the environment with the level-one condition specified in the Appendix E of the GB3906-91.
6. Our indoor metal clad switchgear can be used in areas with the seismic intensity of VIII.
7. There is no recurrent severe vibration.

Technical Parameters of KYN28A-12 Withdrawable Switchgear

Item Unit Value
Rated Voltage kV 3.6 7.2 12
Rated Insulation Level 1min Power Frequency Withstand Voltage kV 42
Lightning Impulse Withstand Voltage kV 75
Rated Frequency Hz 50
Rated Current of Main Bus A 1250 1600 2000 2500 3150
Rated Current of Branch Bus A 630 1250 1600 2000 2500 3150
Rated Thermal Stable Current (4s) kA 31.5 40
Rated Dynamic Stable Current (peak value) kA 80 100
Protection Class IP40 for the shell
IP20 for the compartment

As a specialized withdrawable switchgear manufacturer and supplier in China, BBE also provides withdrawable switchgear, gas insulated switchgear, vacuum circuit breaker, and distribution board, among others.

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