Armoured withdrawable AC metal-enclosed switchgear for 3.6–12 kV networks — up to 3150 A and 50 kA, IP4X bolted enclosure, accepting VD4/VS1/VH1/VK/ZN28 breakers, with full anti-misoperation interlocking.
KYN28-12 armoured withdrawable metal-enclosed switchgear serves 3.6–12 kV, 50 Hz three-phase networks for receiving and distributing power with control, monitoring and protection. It suits single-busbar, sectionalised single-busbar and double-busbar systems, with complete, reliable anti-misoperation functions.
GB/T 3906-2020 — 3.6–40.5 kV AC metal-enclosed switchgear and controlgear
IEC 60298-1990 — AC metal-enclosed switchgear and controlgear above 1 kV up to 52 kV
GB/T 11022-2020 — Common technical requirements for HV switchgear and controlgear
Fully bolt-assembled enclosure of high mechanical strength; plastic-sprayed doors resist impact and corrosion; IP4X protection
Accepts ABB VD4 vacuum breakers, C3 fixed load switches and domestic VS1 / VH1 / VK / ZN28 breakers in place of imports
Air clearance of bare conductors > 125 mm, composite insulation distance > 60 mm regardless of breaker type
Replaces legacy KYN1-12, JYN2-12 and similar switchgear; long life, low maintenance, compact build
Designed to GB 3906 armoured rules, the switchgear comprises a fixed cabinet and a withdrawable handcart; enclosure and functional partitions are bolt-connected. IP4X overall, IP2X with the breaker-chamber door open. It accepts vacuum-breaker handcarts or fixed load switches, supports overhead or cable incoming/outgoing schemes, and may be arranged back-to-back or face-to-face in double rows.
Move cabinets with crane or forklift only — never rollers and crowbars; long rows (10+) assemble from the middle outwards
Withdraw and store the breaker handcart before assembly; remove vertical/horizontal partitions, bottom plate and wiring-duct covers as instructed
Levelness after alignment ≤ 2 mm both ways; anchor to foundation channel by bolts or welding
Specifications are representative and may vary by configuration and region. Final figures are confirmed on the project datasheet.
Tell us about your load profile and site conditions — our engineers will help you size the right HiStore configuration.
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