When power supplies are connected in parallel, it is able to increase the output current or use them as the redundant (back-up) function. Be sure that the difference in
output voltage and wiring impedance should be small when operating in parallel.

1. Connect P(LP/CS) terminals together such as the PSP models (Please refer to the parallel function of specification). Input and output should be connected in parallel before connecting to the AC source and loads. Shown as in picture below (some S.P.S. require a minimum load after paralleling).

2. Output voltage difference between S.P.S. units should be as small as possible, normally < 0.2V.

3. The power supplies should be paralleled with short and large diameter wiring together first, and then connected to the load.

4. After paralleling, the maximum usage of total power should be around 90% of the rated total power.

5. When power supplies are paralleled, if the load is lower than 10% of rated load of individual S.P.S. The LED indicator or signals (Power Good、Pok、Alarm Signal) may malfunction.

6. To ensure that the load current is effectively shared in parallel operation, in general, it is recommended not to use more than 4-6 power supplies at one time.

7. In some models, the +S, -S terminals should be used to reduce unstable pulsation of output voltage.