Description
The KYN28A(GZS1) indoor metal armored withdrawable switchgear is developed on the basis of integrating the advantages of similar domestic and foreign products. It is equipped with a vacuum circuit breaker. Temperature online monitoring is available, which can avoid faults caused by poor plug contact.
This product can be used for receiving and distributing power in the power distribution unit with the voltage of 7.2 to 24KV in the power plant, substation, industrial and mining enterprise, as well as high-rise buildings. It complies with the standards of GB3906 and IEC-298.
Main Technical Parameters| Item | Data | ||||||||
| Rated voltage (KV) | 12 | 24 | |||||||
| Rated current (A) | 630-1250 | 630-3150 | 1250-4000 | 1250-5000 | 630-1250 | 630-3150 | |||
| Rated short-circuit breaking current (KA) | 20 | 25 | 31.5 | 40 | 50 | 20 | 25 | 31.5 | |
| Rated short circuit making current (Peak) (KA) | 50 | 63 | 80 | 100 | 125 | 50 | 63 | 80 | |
| Rated peak withstand current (KA) | 50 | 63 | 80 | 100 | 125 | 50 | 63 | 80 | |
| 4S Rated short time withstand current (KA) | 20 | 25 | 31.5 | 40 | 50 | 20 | 25 | 31.5 | |
| Rated insulation level | Lightning impulse withstand voltage (KV) | 75 (phase to phase, phase to ground) 85 (fracture to fracture) | 125 (phase to phase, phase to ground) 145 (fracture to fracture) | ||||||
| Power frequency withstand voltage (1min) (KV) | 42 (phase to phase, phase to ground) 48 (fracture to fracture) | 65 (phase to phase, phase to ground) 79 (fracture to fracture) | |||||||
| Breaking times of rated short-circuit breaking current | 50 | 30 | 20 | 50 | |||||
| Breaking times of rated current | 20000 | 10000 | 20000 | ||||||
| Protection grade | IP4X | ||||||||
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