China High Voltage Switchgear Cabinet Factory

Yes. We manufacture high voltage switchgear cabinets and medium voltage metal-enclosed switchgear in China for substations, utilities, industrial plants, renewable energy and EPC projects. Our work covers panel configuration, cabinet assembly, busbar processing, component installation, secondary wiring, interlock inspection, factory testing and documentation. Send your SLD or specification for technical review before quotation.

In many projects, the cabinets called high voltage switchgear are also referred to as medium voltage switchgear, MV switchgear, metal-enclosed switchgear, metal-clad switchgear or VCB panels. These terms cover common distribution levels like 11kV, 24kV, 33kV and 35kV. The exact wording depends on your project standard, country and specification.

Cabinets can be configured to your project voltage, such as 11kV, 24kV, 33kV, 35kV or other MV distribution ratings within our scope. Before confirming the design, we review rated voltage, current, short-circuit rating, insulation level, busbar rating, control voltage, environment and standards. The final configuration always matches your SLD and specification.

A proper proposal needs more than voltage level. Provide the SLD, panel schedule, rated voltage, rated current, short-circuit current, feeder quantity, bus coupler requirement, CT/PT requirements, relay requirement, metering requirement, control voltage, cable entry direction, installation environment and applicable standard. If it is incomplete, send the available SLD or specification first for preliminary review.

Yes. The lineup is configured to your single-line diagram and specification. We review incoming panels, outgoing feeders, bus coupler panels, PT / metering panels, transformer feeder panels, spare feeders, busbar arrangement, CT/PT selection, relay functions and cable entry before preparing the proposal. Drawing confirmation before production reduces arrangement errors and site installation problems.

Yes. VCB, CT, PT, protection relay, multifunction meter, energy meter, surge arrester, control switch, signal lamp, live voltage indicator and communication module are configured to your requirements. CT ratio, CT class, PT requirement, relay functions, metering accuracy and communication interface are confirmed during engineering. If you need a specific brand or approved vendor list, include it in the specification.

Yes. We provide drawings and technical documents for review before production: panel arrangement, GA and foundation drawings, primary and secondary schematics, control wiring diagrams, terminal plans, cable entry drawings, CT/PT lists, relay and meter lists, BOM, compliance sheets and technical deviation sheets. The exact scope depends on your project requirements and approved configuration.

Safety design can include mechanical and electrical interlocks, earthing switch interlocks, breaker racking interlocks, shutter mechanisms, door access control, live voltage indicators, grounding continuity, operation labels and mimic diagrams. These support safer operation, isolation, grounding and maintenance. If you need internal arc classification, state the IAC requirement, fault current, duration and accessibility type in your specification.

Testing can include visual and dimensional inspection, mechanical operation test, interlock function test, main circuit resistance, power frequency withstand voltage test, insulation resistance test, secondary wiring check, control circuit function test, relay function check, CT/PT ratio and polarity check, earthing continuity check, auxiliary circuit test, meter and signal check, panel sequence check and labeling inspection. FAT, third-party or remote FAT can be arranged when required.

Risks drop with early engineering review, drawing confirmation, correct panel configuration, clear secondary wiring, proper CT/PT and relay selection, cable entry confirmation, interlock inspection, functional checks and complete FAT documents. Before shipment, breaker operation, racking, earthing switch operation, control circuits, indication signals, trip / close circuits and interlock logic are checked against the approved drawings and test plan.