Iwatsu SS-663, Instruction Manual

Page: 15 / 34

Chapter 1 Overview
11
1.3 Usage Example
To measure current using this current probe, place a conductor to be
measured through the coil loop, and detect a change in magnetic flux
caused by the current flowing through the conductor with the Rogowski Coil
as an electromotive force, as shown in the following usage example
(conceptual illustration). The electromotive force (differential value of the
current) passes through the input part of the main unit, and it is integrated by
the integrator of the main unit.
The integrated current value is converted to voltage with a sensitivity (mV/A)
set for each main unit. The converted voltage is output from the output
terminal of the main unit. Inputting the output voltage to an oscilloscope and
other monitoring devices allows observation of the current waveform.
The sensor cable cannot be removed, because it is integral with (connected
inside of) the main unit. Connect the main unit and monitoring devices with the
BNC cable.
Figure 1.1 Usage Example of This Current Probe (Conceptual Illustration)
Conductor to
be measured
Current I
*
The direction of the arrow in the following figure indicates positive
Rogowski Coil Current Probe
(Clip like: Closed loop)
Current waveform is observed
with an oscilloscope (not
included) and other monitoring
d i
BNC cable Sensor cable
Output Input
Main unit