Overview
GCS low-voltage withdrawable switchgear is suitable for power distribution systems in power plants, petroleum, chemical, metallurgy, textile, high-rise buildings and other industries. In large power plants, petrochemical systems and other places with a high degree of automation and requiring interface with computers, it can be used as a power generation and power supply system with a three-phase AC frequency of 50 (60) Hz, a rated working voltage of 400V, 660V, and a rated current of 5000A and below. A low-voltage complete set of power distribution devices used in power distribution, motor centralized control, and reactive power compensation. The design of the device complies with the following standards: IEC439-1 "Low-voltage switchgear and control equipment" GB7251 "Low-voltage switchgear".Model Meaning
Normal use environment
◆The ambient air temperature should not be higher than +40℃, not lower than -5℃, and the average temperature within 24 hours should not be higher than +35℃. When it exceeds, the derating operation shall be performed according to the actual situation; ◆For indoor use, the altitude of the place of use shall not exceed 2000m; ◆The relative humidity of the surrounding air does not exceed 50% when the maximum temperature is +40°C, and a relatively large relative humidity is allowed at a lower temperature, such as 90% at +20°C. produce condensation effects; ◆When the device is installed, the inclination of the vertical plane should not exceed 5°, and the entire group of cabinets should be relatively flat (in line with GBJ232-82 standard); ◆The device should be installed in a place without severe vibration and shock and not enough to cause the electrical components to be corroded; ◆When users have special requirements, they can negotiate with the manufacturer.The main technical parameters
| Serial number | Rated current (A) | Parameter | |
| 1 | Main circuit rated voltage (V) | AC 400/660 | |
| 2 | Auxiliary circuit rated voltage | AC 220, 380 (400), DC 110, 220 | |
| 3 | Rated frequency(Hz) | 50(60) | |
| 4 | Rated insulation voltage (V) | 660 | |
| 5 | Rated current (A) | Horizontal busbar | ≤5000 |
| Vertical Busbar (MCC) | 1000 | ||
| 6 | Busbar rated peak withstand current (KA/0.1s) | 50.8 | |
| 7 | Busbar rated peak withstand current (KA/0.1s) | 105，176 | |
| 8 | Power frequency test voltage (V/1min) | The main circuit | 2500 |
| Auxiliary circuit | 2000 | ||
| 9 | busbar | Three-phase four-wire system | A.B.C.PEN |
| Three-phase five-wire system | A.B.C.PE.N | ||
| 10 | Protection class | IP30.IP40 | |