The dual power supply control cabinet is mainly composed of a dual power supply automatic switching device, which can automatically switch between the common power supply and the standby power supply as needed to ensure the reliability and continuity of the power supply.Widely used in high-rise buildings, post and telecommunications, industrial and mining enterprises, shipping and other important places that need uninterrupted power supply.
(1) Ambient temperature: -5℃ - + 40℃, the average temperature is 35℃ within 24 hours;
(2) Atmospheric conditions: the air is clean, the relative humidity does not exceed 50% when the highest temperature is + 40℃, and the high relative humidity is allowed at a low temperature, such as 90% at + 20℃, but when considering the temperature change, moderate condensation may be produced accidentally;
(3) The maximum altitude of the equipment installation site: 2,000 m;
(4) The severe earthquake shall not exceed 8 degrees Celsius;
(5) No serious filth, chemical corrosion and violent vibration.
Main circuit rated voltage（v） | exchange380（400）、（660） | |
The Auxiliary circuit is rated at a constant voltage（v） | exchange220/380（400）/110/220 | |
rated frequency（Hz） | 50（60） | |
nominal insulation voltage（v） | 660（1000） | |
rated current（A） | horizontal bus | ≤4000 |
Hammer bus（MCC） | 1000 | |
Bus line is rated to withstand the current for a short time（KA/1s） | 50、80 | |
Bus-rated peak tolerance current（KA）/0.1s | 105/175 | |
Power frequency test voltage（V/1min） | main circuit | 2500 |
accessory circuit | 1760 | |
Bus protection grade | three-phase four-wire system | A.B.C.PEN |
Three-phase five-line system | A.B.C.PEN | |
IP30,IP40 |
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The dual power supply control cabinet is mainly composed of a dual power supply automatic switching device.
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