The GGD low voltage switchgear is applied in power plant, substations.industry and mine corporations, etc., with rated voltage 400V, max operating current 4000A and rated frequency 50/60Hz. lt can be applied as power conversion distribution control, distribution and control of power, lighting and power distribution, etc.The cabinet structure of GGD type adopts the form of general cabinet, the frame is assembled by local welding of cold bending section steel, so it is firm and solid. The parts of the general cabinet are designed according to the principle of module, and have the installation hole with 20mm as the module, and the common coefficient is high. lt can make the factory realize the pre production, not only shortens the production cycle,but also improves the working efficiency.
| Content | Unit | Value | |
|---|---|---|---|
| Rated Operational Voltage | V | 400 | |
| Rated Insulation Voltage | V | 690 | |
| Rated Frequency | Hz | 50/60 | |
| Main Bus-Bar | Rated Current | A | ≤4000 |
| Rated short time withstand current(1S) | kA | ≤80 | |
| Rated Peak Withstand Current | kA | <176 | |
| Rated Current | A | ≤1500 | |
| Distribution Bus | Rated short time withstand current(1S) | kA | ≤50 |
| Rated Peak Withstand Current | kA | ≤105 | |
| Frequency Withstand Voltage in 1 min of Aux Control Loop | kv | 2 | |
| Rated Impulse Withstand Voltage | kV | 8 | |
| Degrees of Protection | IP | IP40 | |
| Electrical Clearance | mm | ≥10 | |
| Creepage Distance | mm | ≥12.5 | |
| Overvoltage Level | － | Ⅲ/Ⅳ | |
| Pollution Degree | － | 3 | |
Main circuit scheme diagram
GGD type AC low voltage fixed switchgear is suitable for power plants, power stations, industrial and mining power enterprise users as AC 50HZ rated working voltage 400v power distribution system as power, lighting and electric energy conversion, distribution and control
First, the main distribution cabinet
The main switchboard is the core part of the GGD switchboard, which is the control center for all other cabinets. The main distribution cabinet has the functions of explosion-proof, protection, isolation, surge protection and overload protection, and can also monitor and control the circuit. In the GGD distribution cabinet, the role of the main distribution cabinet is very important.
Two, motor control cabinet
The motor control cabinet is mainly used to control the start, stop and operation of the motor, and is another important cabinet in the GGD distribution cabinet. It not only has the basic functions of the main distribution cabinet, but also is equipped with additional functions such as starters, protectors and fault diagnosis equipment to ensure the safe operation of the motor.
Three, lighting distribution cabinet
The lighting distribution cabinet is a power distribution device specially used for lighting circuits. Unlike the main distribution cabinet and the motor control cabinet, the circuit in the lighting distribution cabinet is relatively simple, but it also requires protection devices and control circuits to ensure the normal operation of the lighting circuit.
Four, standby power distribution cabinet
The backup power distribution cabinet is the backup power distribution device in the GGD distribution cabinet. It is mainly used to respond to emergencies and provide backup power support for electrical devices. The standby power distribution cabinet can be divided into conventional standby power distribution cabinet and UPS standby power distribution cabinet, which has high practicality and safety.
Key features include a high breaking capacity, rated short-time withstand current up to 50kA, flexible wiring schemes, easy combination, strong practicality, and a novel structure. The cabinet also has good heat dissipation design, aesthetically pleasing industrial design, and a complete grounding protection system with an IP30 protection level, which can be customized up to IP40.
Installation should follow the provided diagrams, with the foundation channel steel and bolts supplied by the user. The main busbar should be assembled and adjusted on site, and the cabinet should be checked for cleanliness and proper component installation before being put into operation
