GCK Low Voltage Withdrawable Switchgear - Reliable Power Distribution Solutions by China Suppliers and Factory
Model meaning
Conditions of use
- Air temperature: The upper limit of ambient air temperature is +40℃, and the lower limit is -5℃. The average temperature within 24 hours should not exceed +35℃, the minimum temperature under storage and transportation conditions is -30℃.
- Relative humidity: In clean air, it doesn't exceeds 50% at a maximum temperature of +40℃; higher relative humidity is allowable at lower temperatures (e.g. 90% at +20℃); however, it should be considered that occasional condensation may occur due to temperature change.
- Installation location: When installing the equipment, the inclination of the vertical plane should not exceed 5°. It should be installed in a place without severe vibration and impact and with medium not enough to corrode electrical component.
Product characteristics
- Strong commonality of structure and flexible assembly: The switchgear is a fully assembled combination structure, with the basic framework assembled by FA steel. The outline dimension and opening dimension of the cabinet framework and components vary according to the basic modulus E=25mm.
- The compartments of the switchgear can be divided into functional unit room, busbar room and cable room. The functions of each functional unit are relatively independent, and the areas are strictly separated by continuously grounded metal plate to ensure safe use and prevent the spread of accident.
- All structural components inside the switchgear shall be galvanized and passivated. The door panels and side panels around the switchgear are made of high-quality cold-rolled steel plates processed and formed by CNC machine tool, and then the surface is treated with acid washing, phosphating, and electrostatic spraying for wear and corrosion resistance. It has both strong mechanical strength and reliable grounding protection continuity.
- The draw-out unit of the switchgear has connection position, test position and disconnection position. Each draw-out unit and switch is equipped with mechanical interlock device: the draw-out unit can only be pulled out and inserted when the switch is in the open state, and cannot be pulled out or inserted when the switch is in the closed state. To prevent unauthorized operation, the operating mechanism handle can be locked in the open position with a padlock. Functional draw-out units of the same specification can be easily interchanged, with each draw-out unit corresponding to a maximum of 20 pairs of auxiliary contacts, which can meet the needs of remote operation control, electricity metering and computer interface automation monitoring system.
Technical parameter
| Rated insulation voltage | AC690V |
| Rated working voltage | AC380V(AC400V) |
| Rated current of horizontal busbar | 1250A, 1600A, 2000A, 3200A, 4000A |
| Rated current of vertical busbar | 1000A |
| Maximum current of feeding circuit | 2500A |
| Maximum current of draw-out circuit | 630A |
| Maximum capacity of control motor | 320kW |
| Rated frequency | 50Hz |
| Peak withstand current of horizontal busbar | 105kA, 176kA |
| Short time withstand current of horizontal busbar(1s) | 50kA, 80kA |
| Peak withstand current of vertical busbar | 63kA, 105kA |
| Short time withstand current of vertical busbar(1s) | 30kA, 50kA |
| Rated power frequency withstand voltage(1min) | 2500V |
| Secondary power frequency withstand voltage(1min) | 2500V |
| Enclosure protection level | IP40 |
| Enclosure dimension(mm) | Width 600(800, 1000) × Depth 800(1000) × Height 2200 |
| Effective height of functional unit(mm) | 1800 |
Outline and installation dimension of switchgear
| Name of switchgear | Width (W) | Depth (D) | Height (H) |
|---|---|---|---|
| Incoming cabinet | 600, 800, 1000 | 800, 1000 | 2200 |
| Bus-tie cabinet | 600, 800, 1000 | ||
| Feeder cabinet | 600, 800, 1000 | ||
| Draw-out cabinet | 600, 800 | ||
| Compensation cabinet | 600, 800, 1000 |
GCK serial screen installation dimension
| Outline dimension(mm) | a | b | |
|---|---|---|---|
| Width | 600 | 480 | |
| 800 | 680 | ||
| Depth | 1000 | 880 | |
| 800 | 680 | ||
| 1000 | 880 |
Frequently Asked Questions (FAQ)
Q1: What are the ambient air temperature requirements for GCK switchgear?
The ambient air temperature must have an upper limit of +40℃ and a lower limit of -5℃. Additionally, the average temperature within a 24-hour period should not exceed +35℃, and the storage or transportation temperature can go as low as -30℃.
Q2: What is the enclosure protection level of this switchgear?
The standard enclosure protection rating for the GCK switchgear is IP40, which ensures effective shielding against solid foreign objects greater than 1mm.
Q3: How does the mechanical interlock device work in the draw-out unit?
The draw-out unit includes connection, test, and disconnection positions. The built-in mechanical interlock ensures safety by only allowing the unit to be inserted or pulled out when the switch is in the open state. It remains locked and cannot be moved when the switch is closed.
Q4: Can the dimensions of the GCK switchgear cabinet be customized?
Yes. While standard configurations recommend widths of 600, 800, or 1000mm, depths of 800 or 1000mm, and a height of 2200mm, users with special size requirements can negotiate customization with our company.
Q5: What anti-corrosion treatments are applied to the switchgear components?
All internal structural parts are galvanized and passivated. The door and side panels are made of high-quality cold-rolled steel plates processed by CNC machines, followed by acid washing, phosphating, and electrostatic spraying for maximum wear and corrosion resistance.