KEPCO RCW 1500W Series - Manual (Page 12)

10
RCW 1500W 120607
3.7 PARALLEL OPERATON
Identical RCW 1500W Power Supplies can be connected in parallel (see Figure 8). The output cur-
rent of each Power Supply can be balanced by connecting together all the CB terminals, connect-
ing together all the -S terminals and connecting together all the +S terminals of up to four 1500W
Power Supply units (see Figure 8 for three units). The current tolerance with up to four RCW
1500W units in parallel should be within (±) 10% of the rated output current. With four RCW 1500W
units in parallel, the output voltage of any Power Supply individually must be within 2% of the other
power supply output voltages. The output current range is 20 to 90% of the nominal output current.
FIGURE 8 PARALLEL CONNECTION OF THREE RCW POWER SUPPLIES
NOTES
1) Remove the connecting links between the (+) M and (+) S terminals and between the (–) M and (–) S terminal. Maintain the con-
necting links between the REF and RV terminals.
2) Set voltage of unit 1 to the desired voltage at the load.
3) With three RCW 1500W units in parallel the output voltage of each Power Supply must be set to less than 2% of each other
4) When the Current Balance function is used with the Remote ON/OFF function, connect all the (+) RC terminals together and all
the (–) RC terminals together.
5) Use the same length and wire size for load connecting wires from the (+) and (–) Bus Bar of each RCW 1500W Power Supply to
the load terminals
6) Use the same length and wire size for twisted pair Sensing wires from the (+) S and (–) S terminals of each RCW 1500W power
Supply to the load terminals