OPERATION SUMMARY - Section 3
3-18 MTS-3000 SERIES OPERATION AND REFERENCE MANUAL
#
0$17$
#
7(67
#
6<67(06
###########################################
CU M004 01A
3.3.7 High AC Current Output
It’s relatively common to require higher current than can be delivered by a single current output channel.
The current channels may be paralleled to increase total current but, as shown, it’s necessary to modify the
phase angle of each channel that’s added in parallel to the initial one. The amplitude of each channel also
should be set to the same value.
FIGURE 3.14
AC CURRENT VECTORS
Two or three output channels may be paralleled at the output terminals, or at the connected load. It’s
important to use the largest feasible current leads to minimize voltage drop in the leads, especially if the
leads are paralleled at the load and only a single neutral lead returns the current to the source.
TIP: There’s a menu selection available to automatically adjust all available sources for optimum high
current delivery, as well as to provide a direct reading of the total current. See Parallel Current
Mode in the Advanced Operation section.
3.3.8 Overcurrent Relay Test
FIGURE 3.15
OVERCURRENT RELAY TEST
A
B
B b
C
L o a d
N
C c