KYN28A-12 Indoor AC Metal-Clad Withdrawable Switchgear

Product Introduction:
This switchgear is equipped with a VS1 or VD4 vacuum circuit breaker featuring high breaking capacity and low chopping current. It has reliable “five-prevention” interlocking functions: preventing misoperation, preventing the truck from being pushed in or pulled out under load, preventing the circuit breaker from being closed when the earthing switch is closed, preventing the earthing switch from being closed while energized, and preventing accidental entry into energized compartments. It is a power distribution unit with excellent performance.
Product Features:
The design, manufacture, and components of this switchgear comply with International Electrotechnical Commission (IEC) standards and Chinese national (GB) standards, fully considering customer requirements for simplicity, reliability, and safety.
Clear prompts and simple, easy operation.
All operations are performed from the front.
On-site setting of intelligent controller parameters.
Only simple routine operation checks and cleaning maintenance are required; lubrication is needed once every five years.
Efficient and reliable three-dimensional parametric design provides a strong guarantee of reliability.
The quality assurance system complies with ISO 9001 requirements.
Fully air-insulated, with no risk of leakage.
Independent functional compartments and pressure relief channels.
Protection rating up to IP4X.
Product Parameters
Item | Parameter | Unit |
Rated voltage | 3.6 7.2 12 | KV |
Rated frequency | 50 | HZ |
Rated current | 630 1250 2500 3150 4000 | A |
Rated power-frequency withstand voltage | 42/min | KV |
Rated lightning impulse withstand voltage | 75 | KV |
Rated short-time withstand current | 20 25 31.5 40 50 | KA |
Rated short-circuit breaking current | 20 25 31.5 40 50 | KA |
Rated peak withstand current | 50 63 80 100 125 | KA |
Rated short-circuit duration | 4 | mS |
Auxiliary power-supply voltage | AC/DC220 AC/DC110 | V |
Overall dimensions (W x D x H) | Cable incoming/outgoing: 800(1000) x 1500 x 2300 | mm |
Overhead incoming/outgoing: 800(1000) x 1660 x 2300 | ||
Equipment weight | 700~1200 | kg |
Degree of protection | Enclosure IP4X; between compartments or with circuit-breaker compartment door open: IP2X | kg |








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