CPC 100 V1.41
4 - 12
Test settings
Figure 8:
CTBurden test card
with test results
Navigate to the parameter fields, and enter the values according to your test
requirements:
Selecting the check box "Manual input" lets you enter the value for Vsec
manually, for example, when Vsec was measured with an external volt meter
rather than at input V1AC.
Measurements
Isec: nominal secondary current
Itest: secondary injection current from 6A AC output
f: output frequency
Auto select check box for automatic test (default), clear for manual
test (refer to page 4-13).
Isec: actual secondary current, measured via input IAC
Vsec: secondary voltage at the burden, measured at input V1AC,
and phase angle
ϕ relative to Isec
Burden: burden in VA: Isec nom × (Vsec act × Isec nom/Isec act)
cos
ϕ cosine of phase angle ϕ