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| How to configure the right cable for Santak UPS |
| Time：2016-10-03 Source： Views：4931 |
How to configure the UPS size suitable for the cable?
It is very important for the UPS to configure the appropriate size of the cable. If the cable is small, it may cause the UPS to burn in the long run and cause serious consequences such as fire. Cable from the theory of the bigger the better, but in the actual application process, there is no need to cause too much waste, but also consider the machine wiring row, lines and into the hole size, typically UPS manufacturers will need to be configured according to the wire size design a suitable line hole and with the wire wiring row, but will give the installation bring a lot of unnecessary trouble, all the right size to wire. No need to be based on the greater the better to the wiring material. How to calculate the size of the cable, indirectly, is to calculate the current size of the UPS in each link, and then according to the current size of each square meter can withstand the current to calculate the size of the cable needs to be configured. See example:
Calculation method of UPS distribution cable
Three three
It
Single
UPS current calculation
Input current calculation formula:
Output current calculation formula:
Battery current calculation formula:
Note: general conditions, per square mm cable (3-5A current)
I:UPS input current rating A
I:UPS output current rating
ETA: overall efficiency
P:UPS rated power, VA
F: load power factor
UPS input power factor
U: UPS input voltage rating
X: single phase =1, three-phase =3
Maximum current of Id: battery
K: inverter efficiency
V:UPS battery shutdown point voltage (10.5V per section)
example
Q: 30kVA UPS three three F=0.8 inverter efficiency =0.94, the efficiency of =0.9, input power factor =0.85, UPS cell number: 32, how much do distribution cable should be selected?
example
Q: 30kVA UPS three single F=0.8, =0.94 inverter efficiency, the efficiency of =0.9, input power factor =0.85, UPS cell number: 32, how much do distribution cable should be selected?
Be careful：
For wiring lengths greater than 10 meters, please enlarge the diameter of 1.5-3 times.
Battery wiring refers to both the battery cabinet and the UPS side of the connection line also refers to the battery cabinet in the connection between the battery line.
The switch capacity is greater than 100A the best use of plastic switch.
Battery box standard 6 square meters of power line, if type is relatively large, need to make their own wire.
For the three single UPS input, A fire line and the zero line to the same size and output cable.
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