Iwatsu SS-293S Instruction Manual page 26

Chapter 4 Measurement
4.3.2 Resisting Voltage Guarantee Range of Rogowski Coil
Sensor Part
The resisting voltage guarantee range of the Rogowski Coil Sensor part is
illustrated in Figure 4.4. The sensor cable's resisting voltage guarantee
range is the section covered with a gray tube (approx. 500 mm). Keep the
section of the sensor cable where the resisting voltage is not guaranteed
away from high-voltage parts.
Figure 4.4 Resisting Voltage Guarantee Range
4.3.3 To Minimize Influence of Fluctuations in Voltage
If there is a part whose voltage fluctuates around the Rogowski Coil Sensor
part, electrostatic coupling between the part and the Rogowski Coil will occur.
This may influence the output from this instrument.
If possible, place the Rogowski Coil Sensor part away from the part whose
voltage fluctuates. This will improve noise caused by electrostatic coupling.
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Resisting voltage guarantee range
Unit: mm