choice UPS type
Purchase UPS the power like bottom important point:
A, choosing of choice UPS type
The UPS power size is decided by a few factors, 1, load the size of power, under the general circumstance the UPS power is to load power in addition to with 0.8 sizes, but for guaranteeing UPS the best work appearance, generally is in addition to with 0.6;
2, load type, if is UPS that the general computer chooses a spare type the power enough, the UPS application of the data important or some high levels has to be used an on-line type of, if is a sensitive faculty load(such as:Printer, duplicator)so want to choose work repeatedly UPS the power.An Uninterruptible Power Supply or UPS, UPS Power Supply is one of the most cost-effective ways to provide clean high quality power without any break in supply.
Two, the choice of battery capacity
The calculation of the capacity standard formula is as follows:
Compute storage battery of biggest turn on electricity electric current of value:The I is the biggest=Pcos ф |(η *the E is critical*N)
Note:P → the mark of UPS the power call to output power
Cos ф→the exportation power of UPS the power factor(UPS generally is 0.8)
η→UPS negative change the efficiency of machine, general is 0.88~0.94(actual calculation in can take 0.9)
The E is critical →storage battery set of critical turn on electricity electric voltage(12 V battery about is a 10.5 Vs, 2 V battery is about 1.7 Vs)
N →the amount of each battery according to the storage battery set chosen of spare time, check the turning on electricity of battery set velocity value that needs C, then according to:
