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GGD AC Low Voltage switchgear
1.General Description:
GGD Low-voltage combination switchgear is assembled with modules in the factory and is used in the powering system of AC 50-60Hz and rated working voltage 380V. It meets the relative technical requirement of international standard IEC439-1 and national standard GB7251. The device is applied for power supply system, power plants, substations, industrial mining enterprises, high buildings, airports, stations, terminals, etc, where use AC of 50-60HZ and voltage of 380V, needing functions such as distribution, motors and electrical equipment’s control, start-up, lighting, power conversion, power compensation, and so on.
2.Working condition:
1.Ambient temperature;-5℃----+40℃
2.Altitude:≤2000m;(indoor use)
3.Relative humidity≤95%(when temperature is +20℃),Maybe there will be condensation influence because of temperature change,user must consider it.
4.Switchgear and vertical surface’s gradient is no more than 5%, and whole switchgear must be put parallel and level.
5.Service environment:should be avoided fire, explosion risk, serious pollution, chemical corrosion and violent vibration.User should discuss with supplier while they have special requirements.
3.Main technical data
Rated voltage of main circuit(V) | AC380(400)、(660) | |
Voltage of auxiliary circuit (V) | AC220、380(400)DC110、220 | |
Rated frequency(Hz) | 50(60) | |
Rated insulating voltage(V) | 400(66a) | |
Rated current(A) | Horizontal busbar | ≤4000 |
Vertical busar(MCC) | 1000 | |
Short-time withstand current(kA/1S) | 50、80 | |
Peak withstand current(kA/0.1S) | 105、176 | |
Power frequency testing voltage(V/1min) | Main circuit | 2500 |
Auxiliary circuit | 1760 | |
Busbar | Three-phase four-wire system | A、B、C、PEN |
Three-phase five-wire system | A、B、C、PEN、N | |
Level of protection | IP3O、IP4O |
4.Overall and assembly drawing