Current Terminals
Two sets of current terminals allow you to measure two
currents simultaneously. The Current Input terminals
for Channels A and B allow you to connect either a
voltage-output CT or current-output CT to the 928A.
A CT configuration screen allows you to setup CT val-
ues for both channels ahead of time.
CT configuration includes entering the CT Output
Type (either voltage or current), CT Ratio and Phase
Offset.
Press 2nd
AI to measure current at Channel A.
Press 2nd
BI to measure current at Channel B.
Note: Use care to select the correct probe type and
scale factor to be able to measure accurately. Also, if
using a characterized probe (by Arbiter Systems), be
sure to select the correct characterization file (called a
"Profile"). See CT Select, under Configuring Channels
A and B on page 25.
Caution: No Direct Current Input – connect CT
probe only. See caution for CT probe use on page 4.
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