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UPS Expertise

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Calculation of The Capacity of UPS

發(fā)布時(shí)間: 2010/02/24 人氣 :8487

·Calculation of The Capacity of UPS

1. It is currently on the market for uninterruptible power supply is mostly in the VA (apparent power) as a unit, V said voltage, A said current and voltage multiplied by the current says that power, that is, the capacity of an uninterruptible power supply; to a 500VA of uninterruptible power supply to indicate that when the output voltage is 110V, its can supply current 4.55A, when you load the demand exceeds the current value of 4.55A, when, it means overloaded.

2. another said the power unit is the "W", W said that the real power, VA said that the virtual work, that there is a difference in power factor, W = VA cosθ, the cosθ is the power factor, power number of factors in the end, individual products, either as 0.6, some 0.8, the current most of the commercially available products are set at 0.7.

3. the cumulative rated capacity of each load calculate the total capacity, and instantly activate the power-load, such as paper printer, sold separately in order to activate the instant when the power consumption calculation, to avoid all the equipment caused by overloading, when activated at the same time, once the city UPS also interrupt the electricity supply cannot be sustained.

4. load the total electricity consumption (VA value and W values) shall not be greater than the UPS output power (VA value and W value), otherwise, it is overloaded. Once the mains abnormal or interrupted, UPS does not work properly, causing the load to face power crisis, which is the normal users are most likely to be negligent issues.
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