15
3.
APPLICATIONS
This chapter describes how to use the TPT9000 to test
different types of transformers.
3.1
Transformer Testing
3.1.1
CT Testing
Figure 2.1 TPT9000 connections to a test CT
▪
Check the CT for Primary polarity markings. If the
CT has been marked P1 and P2 or the direction of
the current through the CT is known, this should be
observed when connecting the TPT9000.
▪
The Brown output wire from the TPT9000 must be
looped through the central hole of the CT. Pass the
wire in through the P1 side and out of the P2 side.
If the CT does not have its polarity marked but the
direction of current flow is known, pass the brown
wire through positive side of the test transformer.
