Switchgear / Switch Cabinet
Standards
GB / IEC 60076
Testing
Routine report
Origin
China
Switchgear & Switch Cabinets
Type GCS Low-Voltage Drawout Switchgear
The Type GCS Low-Voltage Drawout Switchgear was developed by the former Ministry of Electric Power Industry and Ministry of Machinery Industry of China in accordance with the needs of industry authorities, power users, and design institutions. It is in line with China's national conditions, features high technical performance indicators, can adapt to the development of the power market, and is competitive with imported products. As a result, it has gained attention and recognition from manufacturing enterprises and power-using departments.
- Product type
- Switchgear / Switch Cabinet
- Rated voltage
- 0.4 kV / 12 kV / 40.5 kV (model dependent)
- Busbar
- Copper or aluminium, project-specific current rating
- Protection
- IP30-IP54, form 3b/4a options
- Standards
- IEC 61439 / GB 7251 series
- Configuration
- Fixed, draw-out or ring-main unit
Final ratings, losses, impedance and dimensions are confirmed on the approved datasheet. Website values are for family selection.
- Routine test report with the unit
- English GA drawing and O&M manual
- Copper or aluminium winding options
- 50 Hz / 60 Hz and harsh-site options
Product overview
Background and Positioning of Product R&D
The Type GCS Low-Voltage Drawout Switchgear was developed by the former Ministry of Electric Power Industry and Ministry of Machinery Industry of China in accordance with the needs of industry authorities, power users, and design institutions. It is in line with China's national conditions, features high technical performance indicators, can adapt to the development of the power market, and is competitive with imported products. As a result, it has gained attention and recognition from manufacturing enterprises and power-using departments.
Application Scenarios and Standard Compliance
This switchgear is suitable for places with high automation levels that require computer interfaces, such as power plants, substations, petrochemical facilities, and industrial and mining enterprises. It can be used as a low-voltage assembled supporting device for power distribution, centralized motor control, and reactive power compensation in power generation and supply systems with three-phase AC frequency of 50Hz, rated operating voltage of 400V, and rated operating current up to 4000A. It has a protection level of IP40 and complies with the national standards GB7251.1, JB/T9661, and the international standard IEC439-1.
Cabinet Structure and Safety Protection Design
The cabinet structure is assembled from KS profiles (or KB profiles) with a standard module of 20mm. The profiles undergo pickling, phosphating, and electrostatic spraying processes; the internal partitions and drawers are treated with galvanizing and passivation. Various functional compartments (functional unit compartment, busbar compartment, and cable compartment) are isolated from each other and perform relatively independent functions. This design not only prevents contact with live parts of adjacent functional units but also limits the spread of faults, ensuring safe operation.
Design features
What the design is built around
Modular architecture
Fixed, draw-out and ring-main configurations match the protection and operating philosophy.
Safety interlock
Mechanical interlocks and clear compartment separation support safe operation.
Busbar system
Copper or aluminium busbars are sized for the specified current and short-circuit level.
Type-tested design
Designs follow IEC 61439 / GB 7251 and are supplied with test documentation.
Typical specification
Specifications to confirm on the datasheet
| Product type | Switchgear / Switch Cabinet |
|---|---|
| Rated voltage | 0.4 kV / 12 kV / 40.5 kV (model dependent) |
| Busbar | Copper or aluminium, project-specific current rating |
| Protection | IP30-IP54, form 3b/4a options |
| Standards | IEC 61439 / GB 7251 series |
| Configuration | Fixed, draw-out or ring-main unit |
| Finish | Powder-coated steel, project colour |
| Documentation | Type test reports, routine test certificate, GA drawings |
The table is a family-level starting point. The approved datasheet fixes the guaranteed values, drawing dimensions and test plan for the specific order.
Typical applications
- Low-voltage distribution
- MV ring-main networks
- Industrial control rooms
- Commercial buildings
- Renewable-energy auxiliary systems
Confirm before ordering
- Rated capacity, voltage ratio and tap range
- Impedance, fault level and parallel operation
- Ambient temperature, altitude and enclosure
- Winding material, losses and efficiency class
- Terminations, protection and monitoring
- Tests, inspection, packing and shipping limits
Buyer questions
FAQ for Type GCS Low-Voltage Drawout Switchgear
What is Type GCS Low-Voltage Drawout Switchgear best used for?
How is a switch cabinet matched to a transformer?
Which standards and tests are supplied?
Can the transformer be customised for 60 Hz or a hot climate?
How do I choose between copper and aluminium windings?
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