Voltage Transformer
5 - 23
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
Summary of Contents for CPC 100
Page 12: ...CPC 100 V1 41 x...
Page 28: ...CPC 100 V1 41 1 16...
Page 90: ...CPC 100 V1 41 3 14...
Page 194: ...CPC 100 V1 41 6 30...
Page 250: ...CPC 100 V1 41 8 32 Figure 24 Settings of Amplifier test card for this example use case...
Page 258: ...CPC 100 V1 41 9 4...
Page 264: ...CPC 100 V1 41 10 6...
Page 282: ...CPC 100 V1 41 12 10 Figure 9 Saving tests with the CPC Editor...
Page 284: ...CPC 100 V1 41 12 12...
Page 312: ...CPC 100 V1 41 14 12...
Page 316: ...CPC 100 V1 41 15 4...
Page 350: ...CPC 100 V1 41 16 34...
Page 372: ...OMICRON Contact Addresses 22...