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China GCS Low Voltage Withdrawable Switchgear Suppliers - High Performance Factory Solutions for Energy Distribution
Model Meaning
Conditions of Use
Altitude
≤2000m;
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
It doesn't exceed 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.
Note: When the above normal service conditions cannot meet the usage requirement, it shall be negotiated between the user and the manufacturer.
Product Characteristics
Structure Commonality & Flexible Assembly
The switchgear is a fully assembled combination structure, with installation holes of 20mm and 100mm modules on the side, with diameter of φ 9.2mm, making internal installation flexible and convenient.
Compartment Isolation Safety
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 or pressed flame-retardant plastic plate to ensure safe use and prevent the spread of accident.
Durable Surface Treatment & Strength
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.
Draw-out Unit & Mechanical Interlock
The draw-out unit of the switchgear has connection position, test position, disconnection position, draw-out position and isolation 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 36 pairs of auxiliary contacts, which can meet the needs of remote operation control, electricity metering and computer interface automation monitoring system.
Busbar Configuration & Cable Design
The horizontal main busbar is flatly arranged at the back of cabinet to enhance the busbar's ability to resist electric power, which is a basic measure to make the main circuit of the device have high short-circuit strength. The vertical busbar is assembled in insulated functional board to prevent phase discharge caused by switch arcing on the vertical busbar, improving the product's electric shock protection ability and safe operation rate. The design of the cable compartment makes it very convenient for cables to enter and exit both up and down.
Technical Parameter
| Parameter Name | Specification / Value |
|---|---|
| Rated insulation voltage (V) | AC660 |
| Rated working voltage (V) | AC380V (AC400) |
| Rated current of horizontal busbar (A) | ≤4000A |
| Rated current of vertical busbar (A) | 1000A |
| Maximum current of draw-out circuit (A) | 400A |
| Rated frequency (Hz) | 50(60) |
| Peak withstand current of horizontal busbar (kA) | 105, 176 |
| Short time withstand current of horizontal busbar (kA/1S) | 50, 80 |
| Peak withstand current of vertical busbar (kA) | 105 |
| Short time withstand current of vertical busbar (kA/1S) | 50 |
| Rated power frequency withstand voltage (V/1min) | 2500 |
| Secondary power frequency withstand voltage (V/1min) | 2500 |
| Enclosure protection level | IP40 |
| Enclosure dimension (mm) | Width 600(800,1000) × Depth 800(1000) × Height 2200 |
| Effective height of functional unit (mm) | 1760 |
Switchgear and Draw-out Types
According to the purpose, it can be classified into: incoming cabinet, bus-tie cabinet, feeder cabinet (motor centralized control cabinet, lighting distribution cabinet), and reactive power compensation cabinet. According to the incoming method, it can be classified into four types: upper incoming and upper outgoing, upper incoming and lower outgoing, lower incoming and upper outgoing, and lower incoming and lower outgoing.
There are five specifications for draw-out unit height, all based on a unit height of 160mm: 1/2 unit, 1 unit, 3/2 unit, 2 unit and 3 unit in five sizes. Draw-out circuit current is 400A or below.
Outline and Installation Dimension of Switchgear
| Name of switchgear | Width (W) | Depth (D) | Height (H) | Cable outlet (FXG) |
|---|---|---|---|---|
| Incoming cabinet | 600、800、1000 | 800、1000 | 2200 | — |
| Bus-tie cabinet | 800、1000 | — | ||
| Feeder cabinet | 800、1000 | 200×400、400×400 | ||
| Draw-out cabinet | 800、1000 | 200×350、400×350 | ||
| Compensation cabinet | 800、1000 | — |
Note: The above are recommended sizes. Users with special size requirement can negotiate with our company.
Mounting Dimension
Installation Diagram
Frequently Asked Questions (FAQ)
What are the standard ambient conditions required for this switchgear?
The equipment is suitable for altitudes up to 2000m, an ambient temperature range of -5°C to +40°C (with a 24h average ≤+35°C), and relative humidity not exceeding 50% at +40°C (up to 90% at +20°C). Installation inclination should not exceed 5° from the vertical plane.
What are the electrical ratings for the horizontal and vertical busbars?
The rated working voltage is AC380V (AC400V) with a rated insulation voltage of AC660V. The horizontal main busbar supports a rated current of ≤4000A (peak withstand up to 176kA), while the vertical busbar is rated at 1000A (peak withstand 105kA).
How does the draw-out unit ensure operational safety?
Each draw-out unit is equipped with a mechanical interlock that only permits insertion or removal when the switch is in the open state. Furthermore, the operating handle can be locked with a padlock in the open position to prevent unauthorized operation.
What cabinet types and draw-out unit sizes are available?
Available switchgear types include incoming, bus-tie, feeder, and reactive power compensation cabinets. Draw-out units are designed based on a 160mm base module, available in 1/2 unit, 1 unit, 3/2 unit, 2 unit, and 3 unit sizes with maximum current capacities up to 400A.
What is the enclosure protection rating and material treatment?
The switchgear features an IP40 protection enclosure. Internal structural components are galvanized and passivated, while external panels are fabricated from CNC-processed cold-rolled steel plates treated with acid washing, phosphating, and electrostatic powder coating.
Can special installation sizes and service conditions be customized?
Yes. While standard enclosure dimensions are recommended (Height 2200mm, Depth 800/1000mm, Width 600/800/1000mm), special dimensions and customized operating requirements outside normal conditions can be negotiated directly with the manufacturer.