B&K Precision 1747 - Manual - Manual (Page 17)

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4.7 Connecting Two Power Supplies in Series
Two power supplies may be connected in series to provide a variable 0-120 V output.
In this configuration, the two power supplies can supply up to 60 V-10 A or 120 V-5 A.
See
Figure 8 for the connection scheme.
When connected in series, the voltage controls of each power supply exercise control
over a 0-60 V range. Add the LED display readings together or connect an external
voltmeter across the load to determine the total output voltage.
Load current may be monitored from either supply; the readings will be identical
since they are connected in series. Also, since the supplies are connected in series, it
is only necessary to set the current limit on one of the supplies; the other may be set
for maximum.
Figure 8 - Connecting Two Power Supplies in Series
4.8 Connecting Two Power Supplies in Parallel
Two power supplies may be connected in parallel to double the maximum load
current. In this configuration, the two power supplies will provide 0-60 V output
at up to 10 A or 0-35 V at 20 A (heavier gauge hook-up leads are advisable).