Omicron CPC 100 Reference Manual

Current Transformer
4 - 11
CT Burden
Use the CTBurden test card to measure a current transformer’s secondary
burden with AC current injection into the load (up to 6A).
To do so, open the circuit as shown in Figure 7, and inject the AC current from
CPC 100 6A ACoutput into the burden.
The IAC input measures the current that flows into the burden, and the V1AC
input measures the voltage at the burden.
From these measurements, the burden (in VA) and the power factor cos
ϕ are
calculated.
This is the preferred method in cases when the current of max. 800A that
CPC 100 can feed into the CT’s primary side is not sufficient.
Figure 7:
Setup for a CT burden
measurement

Omicron CPC 100 Specifications

General

Brand	Omicron
Model	CPC 100
Category	Test Equipment
Language	English