Omicron CPC 100 - VT Burden

CPC 100 V1.41
5 - 8
VT Burden
Use the VTBurden test card to measure a voltage transformer’s secondary
burden with voltage injection on the VT’s secondary side with up to 130V from
AC OUTPUT.
To do so, open the circuit as shown in Figure 4 and inject the AC voltage from
CPC 100 130V ACoutput into the burden.
Input IAC measures the current that flows into the burden, and input V1AC the
voltage at the burden.
From these measurements, the burden (in VA) and the power factor cos
ϕ are
calculated.
Figure 4:
Setup for a VT burden
measurement