Indoor AC Metal-Clad Withdrawable Switchgear

• Full metal-armored enclosure, LSC2B internal arc classification - contains arc fault energy within the compartment, protecting personnel and adjacent equipment.
• Complete "five-prevention" mechanical + electrical interlock - eliminates all five common misoperation modes without additional auxiliary devices.
• Segregated compartments (breaker / busbar / cable / relay) - single-fault isolation prevents cascading failure.

• Withdrawable VCB truck with three distinct positions (service / test / disconnected) - enables safe on-site commissioning and breaker replacement with the main busbar live.
• Aluminum-zinc coated steel, CNC-formed and bolted assembly - corrosion resistant, high rigidity, no welding deformation.
• Cable compartment designed for bottom-entry / bottom-exit - accommodates 1–3 single-core or three-core cables per phase, ample bending space.

• Truck racking mechanism with lead screw drive - smooth, self-locking, one-person operation; clear position indication.
• Plug-in secondary connectors with automatic disconnection - secondary circuit separates automatically during truck withdrawal, no manual unplugging.
• Front-accessible, modular components - all maintenance from the front; VCB, earthing switch, and relays are field-replaceable.
• Large installed base, high component interchangeability - spare parts readily available, short delivery and commissioning cycle.

• Type-tested per GB/T 3906-2020 and IEC 62271-200 - full type-test reports available for project review.
• Compatible with domestic and imported VCBs - ZN85-40.5 / VS1-40.5 as standard; ABB VD4, VB2, Siemens 3AH interchangeable.
• 50 Hz / 60 Hz, 27–40.5 kV multi-voltage variants - suitable for domestic and Southeast Asia, Middle East, Africa, and South America export projects.

• 49+ primary circuit schemes - covers incoming, feeder, transformer, PT/metering, bus-tie, and capacitor bank applications.
• Wide current and short-circuit rating range - 630–4000 A, 20–31.5 kA breaking capacity, matching most 35 kV substation requirements.
• Suitable for frequent operation scenarios - vacuum interrupter technology, mechanical endurance ≥ 10,000 operations, electrical endurance ≥ 30 times rated short-circuit current.

35kV switchgear for secondary and regional distribution substations, applied to incoming, bus-tie and feeder panels for power reception, distribution and fault protection.

Serves generator outgoing feeders and station-service power distribution in small and medium-sized hydropower, thermal and biomass power plants, including 35kV generator circuit breakers and auxiliary transformer feeders.

Primary power distribution for metallurgy, petrochemical, mining, cement, papermaking, steel and other large industrial plants, stepping down 35kV to 10kV / 6kV for on-site power supply.

Direct control and protection for 35kV / 10kV high-voltage motors (rolling mills, mine mills, large fans, water pumps, etc.), adaptable to frequent operation conditions.

Used in collector and booster stations of wind and PV power plants for 35kV collector line feeders and main transformer low-voltage side panels.

35kV power supply and distribution for urban rail transit, airports, ports, large data centers and high-rise commercial complexes, supporting high-reliability dual-incoming and bus-tie power configuration.