GCS low voltage withdrawable switchgear
Scope of application
The 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 high automation and computer interface requirements, it is used as a low-voltage complete distribution device for power distribution, motor centralized control, and reactive power compensation in power generation and power supply systems with a three-phase AC frequency of 50 (60) Hz, a rated working voltage of 380V (400V), (660V), and a rated current of 4000A or less. The basic form of the switchgear (see Figure 1). This product complies with the standards of: GB7251 Low Voltage Complete Switchgear and Control Equipment, JB/T9661 Low Voltage Withdrawable Switchgear, and IEC439 Low Voltage Complete Switchgear and Control Equipment.
Normal use conditions
1.Ambient air temperature: -5℃~+40℃; daily average temperature shall not exceed +35℃. If exceeded, the capacity shall be reduced according to the actual situation.
2.Altitude: 2000m and below.
3.Relative humidity: not more than 50% at the highest temperature of +40℃; higher relative humidity is allowed at lower temperatures, such as 90% at +20℃. Consideration should be given to the occasional condensation caused by temperature changes.
4.The installation inclination shall not exceed 5°, and the entire cabinet row shall be relatively flat (in compliance with GBJ232-82 standard).
5.The switchgear should be installed in a place without severe vibration and impact and where the electrical components are not subject to unnecessary corrosion. Note: If the user has special requirements, they can negotiate with our company to resolve them.
Main technical parameters
|
Main circuit rated voltage(V) |
Communication 380 (400), (660) |
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Auxiliary circuit rated voltage(V) |
AC 220/380(400)DC 110/220 |
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Rated frequency(Hz) |
50(60) |
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Rated insulation voltage(V) |
660(1000) |
|
|
Rated current(A) |
Horizontal busbar |
4000 |
|
Vertical busbar (MCC) |
1000 |
|
|
Busbar rated short-time withstand current (kA/1s) |
50.8 |
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|
Busbar rated peak withstand current (kA/0.1s) |
105,176 |
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|
Power frequency test voltage (V/1min) |
Main circuit |
2500 |
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Auxiliary circuit |
1760 |
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|
Busbar |
Three-phase four-wire system |
A、B、C、PEN |
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Three-phase five-wire system |
A、B、C、PEN、N |
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|
Protection level |
IP30、IP40 |
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