Omicron CPC 100 Reference Manual

Voltage Transformer
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Measurements
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.
Vprim: actual output voltage at 2kV AC output that is injected into the
electronic voltage transformer’s primary side
Vsec: secondary voltage measured at V2AC, and its phase angle
relative to Vprim nominal
Ratio:
ratio Vprim /Vsec., here 10000.0/
√3:1.002/√3
1
1. The value 1.002/√3 is calculated as follows:
Vsec act x (Vprim nom / Vprim act) = 200.4mV x (10000V/√3 / 2kV) = 1.002 V/√ 3
and deviation of voltage ratio in %.
((Kn x Vsec - Vprim) / Vprim) x 100%
2
((10000V / 1V x 0.2004V - 2000V) / 2000V) x 100% = 0.205%
2. Kn = rated transformation value, here: 10000V / 1V
Polarity: displays the status of the polarity
OK = phaseVsec - phaseVprim = -45° < 0° < 45°
NOT OK = all other cases

Omicron CPC 100 Specifications

General

Brand	Omicron
Model	CPC 100
Category	Test Equipment
Language	English