KEPCO RKW 600W Series Operator Manual - Manual (Page 13)

RKW 600W 060110
11
5.3.2.1 MASTER-SLAVE, MULTIPLE LOADS
Figure 10 shows the master-slave connection of three power supplies in parallel, each having an
independent load, with output voltage controlled by the Vadj control of the master power supply.
Use shielded wire (recommended) or twisted wires for connections to RV and –S terminals.
FIGURE 10. PARALLEL CONNECTION, MASTER-SLAVE, MULTIPLE LOADS
5.3.2.2 MASTER-SLAVE, SINGLE LOAD
Figure 11 shows the connection of three power supplies in parallel to a single load. The output
voltage of all power supplies is controlled by Vadj of the master. Current balancing must be imple-
mented to equalize the load (see PAR. 5.3.1). NOTE: Use shielded wire (recommended) or
twisted wires for connections to RV and –S terminals. Match impedance of load wires between
each power supply and load by using the same wire lengths and wire sizes.
FIGURE 11. PARALLEL CONNECTION, MASTER-SLAVE, SINGLE LOAD
5.4 SERIES CONNECTION
Units may be connected in series to obtain higher voltages. When a number of power supplies are
operating in series, the current rating is to be limited to the rating of the power supply with the low-
est rating. Each Power Supply in series should be protected by a diode connected in its non-con-
ducting direction in parallel with the output as shown in Figure 12. The diode protects against
inadvertent shorting of the series connection. It should be rated for the maximum voltage and cur-
rent of the series connection (typically, V
REVERSE
= 2 x V
OUT
of the series connection, I
FORWARD
=
2 x I
OUT
of the series connection). This may require several diodes in parallel to meet high current
requirements.