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Chapter 1 Overview
1.2 Features
The following describes the features of this instrument.
Target of measurement
• Train inverters etc.
• Development and maintenance of infrastructure facilities of the
automotive and other industries
Easy measurement
Current in facilities (such as switchboards) can be measured easily.
A thin and removable Rogowski Coil (two types of the coils, which
have lengths of 300 mm and 700 mm, respectively, are available,
and the maximum cross sectional diameter of the coil is 8.5 mm)
designed to detect current has the following advantages:
• Wide applications of measurement are possible in any place
• Superior heat resistance and insulation property around the coil
This instrument has the following specifications (for details, refer
to Section 5.1 "Specifications").
• Frequency bandwidth: f
MHz
[−3 dB] L = 700 mm
• Peak current: 1.2 kA to 12 kA
(Four models of 1.2 kA, 3 kA, 6 kA, and 12 kA × two types: Total
of eight models)
• Sensitivity accuracy: ±2% (at the center of the coil loop)
• Linearity: ±0.05% of full scale
Power supply
• This instrument operates with the supplied alkaline batteries or
equivalent four AA dry batteries.
10
to 20 MHz
[−3 dB] L = 300 mm,
L
(f
: Low-Frequency cutoff)
L
f
to 10
L
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