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What are the advantages and disadvantages of UPS power supply in series and parallel?

Date:Jul 18, 2019

What are the advantages and disadvantages of UPS power supply in series and parallel? UPS backups usually have two connections, one in series and one in parallel. The UPS power supply is connected in parallel and in series to improve the reliability and completeness of the UPS power system. The continuous and stable operation of the UPS power supply is a prerequisite for the normal operation of the communication equipment, and once the power is cut off, it will have a major impact. What are the advantages and disadvantages of UPS power supply in series and parallel?


The advantages of UPS series are:

1. Simple structure and convenient installation.

2. The price is cheap.

3. Different companies, different power UPS can also be connected in series.


The disadvantages of UPS paralleling are:

1. It cannot be expanded.

2. The host ages differently. The battery life of the parallel machine is reduced.

3. When the load has a short circuit fault, the inverter is easily damaged.


What is the difference between UPS battery parallel and series?

After the UPS batteries are connected in parallel, the voltage is unchanged. What is the voltage of each battery? This voltage is still connected in parallel, but the capacity of the battery (discharge time) is equal to the sum of 10 battery capacities. The total voltage of the battery after series connection is equal to the sum of the voltages of 10 batteries, but the capacity (discharge time) of the battery does not change, which is equivalent to the capacity of the smallest battery.


If the components in the UPS circuit are connected one after another, the circuit is a series circuit. If the components are connected first and second at the same time, the circuit is a parallel circuit.


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