16
3.6 SERIES CONNECTION OPERATION
<NOTE:>
Power supplies equipped with SCR crowbars should not be used in series or parallel with
each other unless a master-slave interconnection is employed and their crowbars interlock.
Greater output voltage capability can be obtained by connecting outputs in series. A note of caution, since current
is the same in each element of a series circuit, both outputs need identical rated currents. If this is not
followed, excessive current may be forced into one of the outputs and cause a failure.
Figure J illustrates the Series configuration on a PPS-2322.
OUTPUT
channel 1
OUTPUT
channel 2
Figure J. Series Configuration
3.6.1 CV OPERATION
In CV operation, first program the current of both outputs to the desired value. Secondly, program the desired
operating voltage to equal the sum of the output voltages.
3.6.2 CC OPERATION
In CC operation, one output will operate in CV mode, the other in CC mode. To obtain this operation, perform the
following:
1. Program the output current of the two channels to the desired operating current.
2. Program output channel one to one-half the desired operating voltage.
3. Program output channel two to one-half the desired operating voltage.
At load levels less than one half the total voltage limit, the output that was originally in CC mode, stays in CC
mode.
At load voltages greater than one-half the total voltage limit, the output that was originally in CC mode, changes to
CV mode. The secondary output will regulate the current in CC mode and provide the necessary voltage.
To Next Page
Loading...
Need help?
General