HXGN66-12 High Voltage Switchgear Cabinet
The HXGN66-12 high-voltage switchgear cabinet is manufactured by LYE Technology for 3–10 kV three-phase 50 Hz single-busbar systems. A metal-enclosed box-type fixed design divides the cabinet into busbar, instrument, circuit-breaker and cable compartments, with a GN30-12 rotary isolator above and a GN19-12G isolator below.
- Application: 3–10 kV three-phase AC 50 Hz single-busbar system
- Structure: Metal-enclosed box-type fixed, assembled without welding
- Isolators: GN30-12 rotary isolator, GN19-12G isolator below
- Breaker options: Integrated vacuum breaker, VS1-12 (ZN63A), VD4-12
- Interlocking: Programmed mechanical interlock, five-prevention compliant
High-Voltage Switchgear: Key Features & Typical Use
Miniaturised for Urban Network Upgrades
The HXGN66-12 belongs to the generation of switchgear designed for urban and rural network reinforcement, where a compact cabinet has to be installed in a room that was never sized for switchgear. It is small, self-contained and intended to serve box substations as well as conventional substations, so retrofits stay inside the available floorspace.Four Compartments, Air Insulated
The cabinet is divided into a busbar room, an instrument room, a circuit-breaker room and a cable room, so instrument wiring and cable termination are physically separated from the live busbar. The design is air insulated and can accept an integrated vacuum circuit breaker, including fixed types such as VS1-12 (ZN63A) and VD4-12.Programmed Isolation Sequence
A GN30-12 rotary isolator is mounted in the upper part of the cabinet and a GN19-12G isolator below it. Because the two are mechanically interlocked and sequenced, the operator cannot open the wrong element first, and the interlocking between main switch, isolators and door provides reliable safety protection for both people and equipment.Assembled Steelwork, Accurate Geometry
The cabinet is an assembled structure rather than a welded one, which gives high mechanical strength and a neat appearance while avoiding weld distortion. Frame parts can be made from C-section steel, 8MF section steel or aluminium-zinc coated plate, all cut, punched and bent on CNC equipment, so the dimensional accuracy stays consistent across a batch.High-Voltage Switchgear Specifications & Technical Data
| Parameter | Details |
|---|---|
| Product | HXGN66-12 high voltage switchgear cabinet |
| Application | 3–10 kV three-phase AC 50 Hz single-busbar system |
| Structure type | Metal-enclosed box-type fixed, assembled without welding |
| Cabinet function | Receiving and distributing electrical energy |
| Compartments | Busbar room, instrument room, circuit-breaker room, cable room |
| Upper isolator | GN30-12 rotary disconnect switch |
| Lower isolator | GN19-12G disconnect switch |
| Interlocking | Programmed mechanical interlock; five-prevention functions satisfied |
| Insulation medium | Air |
| Compatible breakers | Integrated vacuum breaker, fixed VS1-12 (ZN63A), VD4-12 |
| Enclosure protection degree | IP2X |
| Frame materials | C-section steel, 8MF section steel, aluminium-zinc coated plate |
| Surface treatment | Pickling, phosphating and electrostatic spraying |
| Cabinet colour | Customisable by the user |
| Typical applications | Urban and rural network upgrading, box substations, substations |
HXGN66-12 — a Compact Fixed High-Voltage Cabinet for Network Reinforcement
Distribution networks are upgraded in places that were built before switchgear became a design consideration. The HXGN66-12 is sized for exactly that situation: a compact box-type fixed cabinet for 3–10 kV single-busbar systems, small enough to fit an existing room and simple enough to be maintained by a local team.In specifications this equipment appears as a box-type fixed high-voltage switchgear cabinet, an HXGN ring main switchgear or simply a 10 kV switch cabinet, and it is usually compared with withdrawable designs and with gas-insulated units. The choice is normally settled by the room you already have: assembled fixed construction avoids welding distortion and fits existing substations that were never sized for modern switchgear.Inside, the cabinet is divided into four compartments with the busbar and cable terminations kept apart, and the isolation sequence is enforced mechanically: a GN30-12 rotary isolator above and a GN19-12G isolator below, interlocked with each other, the main breaker and the door. Air insulation keeps the design straightforward to inspect.The assembled steelwork can be built from C-section steel, 8MF section steel or aluminium-zinc coated plate, so the frame can be matched to the duty and the budget, and the doors are pickled, phosphated and electrostatically sprayed for impact and corrosion resistance. Cabinet colour is specified by the user.Factory-Direct High-Voltage Switchgear Manufacturer & OEM / ODM
We Manufacture, You Brand
LYE Technology (Zhejiang) Co., Ltd. is a national high-tech enterprise and manufacturer in Wenzhou, China: sheet-metal fabrication, welding, powder coating, busbar machining and final assembly run on our own factory lines, and every unit is function-tested before it leaves the works. A HXGN66-12 High Voltage Switchgear Cabinet that reaches your site carries the routine test behind it, not just the rating on the nameplate.We are one of the Top 10 Brands of China's small power distribution boxes and a drafter of national standards in this category, and we hold ISO9001, ISO14001, ISO45001, CCC, CE and TUV certification. Because we are the manufacturer rather than a trading company, our sales engineers quote from your drawing in factory-direct terms, and OEM or ODM work is produced on the same lines as our standard products.For the HXGN66-12 we cut, punch and bend the frame on CNC equipment in-house, so a specific room dimension or cable entry position is a drawing adjustment rather than a new product.- OEM branding — custom colours, laser marking and your own project or retail packaging, applied at the factory.
- ODM options — ratings, configurations and internal layouts built around your drawings or single-line diagram.
- Certification — ISO9001, ISO14001, ISO45001, CCC, CE and TUV, with test documents supplied per project.
- MOQ — flexible quantities for a project or a trial order, with mixed types welcome in one shipment.
HXGN66-12 fixed cabinet with four separated compartments
GN30-12 rotary isolator mounted above the breaker compartment
High-Voltage Switchgear Buying Guide from the Manufacturer
A fixed cabinet is usually specified against an existing room and an existing protection scheme. These are the points we confirm before releasing a drawing.
- Confirm the system voltage, 3–10 kV, frequency and single-busbar configuration.
- Confirm the short-circuit rating and the breaker type you intend to fit.
- Check the room dimensions, cable entry direction and trench position.
- Confirm the frame material preference and the cabinet colour required.
- Send the single-line diagram, room dimensions and the protection and metering scheme.
- Approve drawings, then production with routine testing and dispatch with documentation.
Manufacturer & Sales Support for Wholesale Buyers
OEM / ODM
Learn more →Factory colours · Logo marking · Custom layout
Wholesale
Learn more →Factory pricing · Flexible MOQ · Global shipping
Distributor Support
Learn more →Account manager · Drawing support · Priority lead times
Need a Compact Fixed Cabinet for 3–10 kV Distribution?
OEM/ODM, wholesale pricing and distributor support straight from the manufacturer — one enquiry gets you a factory-direct quotation for the HXGN66-12 High Voltage Switchgear Cabinet, sized to your single-line diagram, existing room dimensions and the protection scheme you intend to use, with type-test documentation under the applicable standards for 3.6 kV to 40.5 kV AC metal-enclosed switchgear. Our sales team replies with a specification and an indicative price, so send your drawings and quantity.Contact Our Sales TeamHigh-Voltage Switchgear — Frequently Asked Questions
What is a high-voltage switchgear cabinet?
It is the enclosure that receives and distributes electrical energy at medium or high voltage and provides control, protection and detection functions for the circuits connected to it. The HXGN66-12 is a metal-enclosed box-type fixed cabinet for 3–10 kV three-phase 50 Hz single-busbar systems, divided into busbar, instrument, circuit-breaker and cable compartments.What is a 10 kV switchgear cabinet used for?
It is used to receive and distribute electrical energy in urban and rural distribution networks, conventional substations and box substations. It is typically installed where a compact, self-contained cabinet has to go into a room that was not designed for switchgear, and where the local team needs a simple, air-insulated design with straightforward isolation and inspection.What is the difference between a fixed and a withdrawable switchgear cabinet?
A fixed cabinet bolts the circuit breaker and devices in place, so fault repair requires isolating the cubicle first; it is simpler, smaller and cheaper to own. A withdrawable cabinet mounts the breaker on a truck that can be racked out and replaced while the busbar stays energised, which shortens outages but adds mechanism, interlocking and cost. Fixed designs like the HXGN66-12 suit compact substations and settled load lists.Who are the main high-voltage switchgear manufacturers?
The category includes international brands and a larger group of Chinese manufacturers who build to the same national standards, so identical ratings can come with very different build quality. Useful questions are whether the frame is processed on the supplier's own CNC equipment, whether the interlock sequence is mechanically enforced, and which routine test records accompany the shipment. LYE manufactures the HXGN66-12 in Wenzhou and holds ISO9001, ISO14001, ISO45001, CCC, CE and TUV certification.How much does a 10 kV switchgear cabinet cost?
Indicative factory-direct pricing is roughly US$3,000 to US$20,000 per cubicle or unit, depending on the current and short-circuit rating, the breaker fitted, the number of compartments and the quantity ordered. Because the cabinet is usually specified against an existing room and protection scheme, sending the single-line diagram and the room dimensions is the quickest way to convert an indicative band into a firm quotation.
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Use a distribution box for final circuits and compact branch protection; use a cabinet when the project needs larger incoming capacity, more feeder groups, metering, busbars or greater internal separation. The final choice should be checked against the single-line diagram, device list, available installation space and local project rules.
Provide the device schedule, circuit quantity, component dimensions, cable-entry direction, mounting method and required spare capacity. LYE also reviews door clearance, bending radius, heat-producing devices and the usable depth behind the mounting plate before confirming an enclosure size.
Start with the actual exposure to dust, rain, cleaning water and accidental contact rather than choosing the highest number by default. Cable entries, ventilation, door seals and installation workmanship affect the finished assembly, so the target rating and verification basis must be confirmed for the specific product and project.
Coated or galvanized steel is commonly considered for general indoor service, stainless steel for humid or corrosive locations, and engineering plastic for lightweight non-metallic applications. Material grade, thickness, UV exposure, chemical contact and earthing requirements must be confirmed against the installation environment.
Share the component heat load, ambient temperature, solar exposure, duty cycle and allowable internal temperature. LYE can then review enclosure volume, spacing, ventilation or fan provisions, sun shields, heaters or drainage details; the final thermal design remains tied to the installed equipment and site conditions.
Yes. A dimensioned drawing is preferred, but a physical sample and clear reference photographs can also start the review. Material, thickness, openings, hardware, finish, labels, inspection points and packing are recorded before sampling or repeat production.
PDF and common 2D CAD drawings are suitable for most enclosure enquiries, while 3D files can help with complex assemblies. Include a revision number, units, tolerances and component references; file compatibility and any missing production information will be confirmed during review.
A sample or first article can be arranged for a new or customized product. The approval plan should identify dimensions, openings, fit, appearance, hardware, labels and packaging, together with the sample cost and timing agreed for the actual order.
Available documents may include approved drawings, packing lists, dimensional or appearance inspection records, product data and certificates applicable to the confirmed model. Destination-specific declarations or third-party testing must be requested before order placement so availability and scope can be verified.
Lead time is confirmed after the product scope, quantity, sample requirement and finish are known. Packing is reviewed against product weight, surface protection, destination and shipping method; if an issue is found after delivery, send the order reference, label, photographs and quantity affected so it can be traced and reviewed.
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