Project-configured SF6 gas-insulated switchgear for 20/22/24kV utility distribution, EPC substations, industrial networks, solar plants, BESS and infrastructure.
Product Overview
QCL-24 is designed for switching, protection, measurement and distribution in 24kV-class systems. The sealed primary system and modular functional units support compact substations and project-specific feeder arrangements. Final configuration is based on the approved SLD and specification.
Core Advantages
Compact Footprint
Suitable for space-limited substations and distribution rooms.
Flexible Feeder Design
Incoming, outgoing, protection, metering and PT functions are coordinated to the SLD.
Reliable Operation
Sealed primary circuit, mechanical interlocking and clear position indication.
Engineering Support
Selection, GA drawing, SLD review and project submittals.
OEM Support
Project branding, secondary control and documentation options.
Reduced Site Work
Factory configuration and testing support smoother installation and commissioning.
Technical Parameters
| Item | QCL-24 Series |
|---|---|
| Rated voltage | 24 kV |
| Rated frequency | 50 Hz |
| Rated current | 630 A |
| Switch-fuse combination rated current | Up to 125 A, fuse selection required |
| Rated short-time withstand current | 20 / 25 kA, 3 s |
| Rated peak withstand current | 50 / 63 kA |
| Power-frequency withstand voltage, 1 min | 65 kV |
| Lightning impulse withstand voltage | 125 kV |
| Gas tank protection degree | IP67 |
| Final configuration | According to approved SLD and technical specification |
Functional Units & Configuration
| Unit | Function | Typical Use |
|---|---|---|
| C | Load-break switch cable unit | Ring incoming/outgoing feeder |
| F | Switch-fuse combination unit | Transformer protection |
| V | Vacuum circuit-breaker unit | Relay-protected feeder |
| PT | Voltage transformer unit | Measurement and auxiliary supply |
| M | Metering unit | Project metering |
Applications
Product Details
Front Interface
Mimic diagram, mechanism, indication and secondary controls arranged for clear operation.
Primary System
Switching components and busbar are integrated within the gas-insulated enclosure.
Cable Compartment
Cable termination and accessory interfaces are selected for the confirmed project configuration.
GA Drawing & Dimensions
Complete GA drawings and cabinet arrangements are issued after SLD and configuration review. Dimensions remain subject to the approved project drawing.
Send Your SLD for GA Drawing →Typical SLD
Typical C, F, V, PT and metering arrangements support ring-network, radial-feeder and transformer-protection schemes. Final SLD is confirmed during engineering review.
Manufacturing & Quality
Project, FAT & Shipment Evidence
Project evidence is organized by voltage, application, equipment scope, inspection, packing and shipment. Confidential customer names are not disclosed.
View Project Delivery Support →Downloads
Project Documents
GA drawings, SLD and test-document scope are supplied against the confirmed configuration.
FAQ
Can QCL-24 be used for 20kV and 22kV systems?
Project application is evaluated against system voltage, insulation level, frequency, short-circuit duty and local requirements.
What is required for selection?
SLD, rated voltage, current, short-circuit level, frequency, quantity, protection and communication requirements.
Is FAT available?
Inspection and FAT scope can be included in the agreed project document schedule.
Have a 20/22/24kV Project?
Send your voltage, quantity, SLD or technical specification for engineering review.
Request QuotationSend SpecificationWhatsApp EngineerAdditional Selection FAQ
Can QCL-24 be used for 20kV and 22kV systems?
Yes. A 24kV equipment class can serve 20kV and 22kV networks when the insulation level and project specification are satisfied.
How is the feeder combination selected?
Incoming, outgoing, transformer protection, bus section, metering and PT functions are arranged according to the approved SLD.
Are dimensions fixed?
Dimensions depend on the functional unit, cable interface and auxiliary requirements; final values are issued in the approved GA drawing.
Can FAT be witnessed?
Yes. Witness points and the FAT document scope can be agreed before production.
Model Meaning
QCL identifies the Qiangchi gas-insulated product family; 24 identifies the 24kV equipment class. The final feeder sequence and functional units are defined by the approved SLD.
QCL-24 can be evaluated for 20kV, 22kV and 24kV projects subject to the complete system specification. Short-time withstand duration is confirmed as 3 seconds for the applicable design.
Service Conditions & Project Confirmation
| Ambient temperature | Subject to project specification and technical confirmation |
|---|---|
| Altitude | State the installation altitude in the RFQ; derating or design review may be required |
| Relative humidity | Confirm maximum and average project conditions |
| Pollution and corrosion | State pollution level, salt mist, dust and corrosive atmosphere where applicable |
| Seismic condition | Project-specific requirement to be confirmed |
| Installation | Indoor or outdoor enclosure, cable entry, room dimensions and service aisle must be specified |
Standards and Technical Compliance
The applicable IEC standards, utility requirements, project specifications, inspection plan and document list are confirmed during technical clarification. Compliance statements apply only to the final approved configuration; no unverified certificate or test claim is implied.
Engineering, Packing & Shipment
After drawing approval, Qiangchi coordinates production, inspection, routine testing and the agreed FAT scope. Finished equipment is protected for handling and export shipment according to cabinet size, destination, transport method and contractual packing requirements.
Related Technical Guides
Review the Product Finder, Product Comparison and Selection Guides.
Request Project Configuration
Send the SLD, BOQ, specification, voltage, current, fault level, quantity and destination.
Reviewed by Qiangchi Engineering Team · Updated September 12, 2026
Engineering Answers for QCL-24 Gas-Insulated Switchgear
What is this product?
QCL-24 Gas-Insulated Switchgear is a Qiangchi medium-voltage product configured for project-specific distribution requirements.
Which voltage levels are available?
24 kV class; applied to 13.8/20/22/24 kV systems subject to insulation coordination and the approved specification.
Where is it used?
It is used in medium-voltage distribution where compact construction and project-specific functional units are required.
How to select the configuration?
Selection follows the system voltage, rated current, short-circuit level, functional units, protection concept, cable interface, installation conditions and approved SLD.
Which standards and tests apply?
Applicable standards, routine tests and document scope are confirmed in the approved technical specification.
What information is required for quotation?
Send the SLD, system voltage, frequency, rated current, short-circuit level, quantity, project stage, required documents and delivery requirements.