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GCS type low-voltage withdrawable switchgear
GCS type low-voltage withdrawable switchgear
summary
The GCS type low-voltage withdrawable switchgear is suitable for power distribution systems in various industries, including power plants, oil, chemical, metallurgy, textiles, and high-rise buildings. It is particularly suitable for large power plants and petrochemical systems where high automation is required and interfaces with computers are essential. This equipment is designed for power distribution, centralized motor control, and reactive power compensation in power supply systems, featuring a three-phase AC frequency of 50 (60) Hz, rated working voltages of 400V and 660V, and rated currents up to 5000A.
The design of the device complies with the following standards: IEC439-1 "Low Voltage Complete Switchgear and Control Equipment" GB7251 "Low Voltage Complete Switchgear".
Use environmental conditions
◆ The ambient air temperature is not higher than +40℃, not lower than-5℃, and the average temperature within 24 hours shall not be higher than +35℃. If it exceeds, the operation shall be reduced according to the actual situation;
◆ Indoor use, the altitude of the place of use shall not exceed 2000m;
◆ The relative humidity of the surrounding air should not exceed 50% at the highest temperature of +40℃, and a larger relative humidity is allowed at lower temperatures, such as 90% at +20℃. Consider the effect of condensation that may occur accidentally due to changes in temperature;
◆ The inclination of the device to the vertical plane shall not exceed 5° during installation, and the whole cabinet column shall be relatively flat (in accordance with GBJ232-82 standard);
◆ The device shall be installed in a place without violent vibration and impact, and not enough to cause undue corrosion of electrical components;
◆ When the user has special requirements, it can be negotiated with the manufacturer.
Main technical parameters
order number | name | parameter | |
1 | Rated voltage of main circuit (V) | Rated AC 400/660 | |
2 | Rated voltage of auxiliary circuit | Alternating current 220,380 (400), DC 110,220 | |
3 | rated frequency （Hz） | 50(60) | |
4 | Rated insulation voltage (V) | 660 | |
5 | rated current （A） | horizontal bus | ≤5000 |
rated current （A） | Vertical bus (MCC) | 1000 | |
6 | Rated short-time withstand current of busbar (KA/1s) | 50,80 | |
7 | Rated peak withstand current of busbar (KA/0.1s) | 105,176 | |
8 | Power frequency test voltage (V/1min) | main circuit | 2500 |
accessory circuit | 2000 | ||
9 |
generatrix | three-phase four-wire system | A.B.C.PEN |
Three phase five wire system | A.B.C.PE.N | ||
10 | levels of protection | IP30.IP40 | |
outline overall and installing dimensions
(mm)
Cabinet width (D) | Cabinet depth (W) | Cabinet height (H) |
600,800,1000 | 800,1000 | 2200 |
ordering instruction | Factory data and accessories |
u When placing an order, the user should provide: u Main circuit distribution system diagram and plan layout, rated working voltage, rated working current, protection device setting current and necessary technical parameters. u Mark the specifications of incoming and outgoing cables. u The model, specification and quantity of the main electrical components in the switchgear. u If busbar bridge or busbar trough is needed between switch cabinets or incoming cabinets, the span and height from the ground should be indicated u Provide specific requirements data. u When switchgear is used in special environmental conditions, it should be specified in detail when ordering. u Switch cabinet surface color and other specific requirements. | u The manufacturer shall provide the following documents and attachments when supplying u dispatching list u Product certificate and factory test report u operating instruction u Related electrical drawings u Description of main components u Door key, operating handle and spare parts specified in the contract. |