Omicron CPC 100 - VT Polarity and Voltage Withstand Tests

CPC 100 V 3.20
Voltage Transformer - 2
Voltage
Transformer
*) Due to cross-talk between the measuring inputs V1 AC and V2 AC, we suggest not to connect
a current clamp to the input V2 AC. Therefore, use a current clamp with current output.
This test is identical to the voltage withstand test described on page Current Transformer-4. This test is identical to the polarity check described on page Current Transformer-5.
Nominal secondary voltage
Secondary
injection voltage
from 130V AC
output
Correction factor for Vsec
Actual voltage at
the burden
measured at input
V1 AC
Actual current
through burden
measured via
input IAC and its
deviation
Use current clamp
rather than input
IAC
*)
Output
frequency
Select to stop test automatically when measurement is
done
Select to enter
secondary current
instead of
measuring it
Burden in VA: Vsec nom × (Isec act × Vsec nom/Vsec act)
Cosinus of phase angle

Burden
VT
A
N
a
n
The CPC 100 injects a
special polarity check
signal
polarity checker
CPOL

green LED
polarity checker
CPOL

red LED
VTBurden Voltage Withstand Test Polarity Check