Winding Resistance Measurement Accuracy; Ratio And Phase Measurement Accuracy - Omicron Lab CT Analyzer User Manual

CT Analyzer User Manual
10.4

Winding Resistance Measurement Accuracy

10.5

Ratio and Phase Measurement Accuracy

164
Measurement input "Sec"
Input impedance
Insulation
Measurement input "Prim"
Voltage ranges
Accuracy
Input impedance
Insulation
Winding resistance measurement accuracy
Resolution
Accuracy
The values given in the following table are only valid under the following
conditions:
• All utility lines to the primary side of the CT are disconnected.
• One terminal of the primary side of the CT is connected to PE.
• The original measurement cables delivered by OMICRON for the
CT Analyzer are used.
• The CT under test is a CT with a non-gapped core.
• The knee point voltage according to IEEE C57.13 is > 3V.
Under interfering conditions the device has reduced accuracy.
Ω
0 - 15V: 1M
Ω
15 - 150V: 500k to 1M
voltage. Input current is compensated by the
device.
Reinforced insulation (R) to all other circuits
0 - 0.03 / 0.3 / 3 / 30V
AC
0.1% (guaranteed)
Ω
0 - 15V: 330k
Ω
15 - 30V: 120k to 330k
voltage.
Reinforced insulation (R) to all other circuits
Ω
1m
0.05% (typical)
Ω
0.1% + 1m (guaranteed)
Ω
, depending on the
(auto ranging)
Ω
, depending on the