Hioki FT3151, Инструкция по эксплуатации

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1
Overview
1.1 Overview
This instrument is an earth tester that is fully functional for
measuring earth resistance for grounding works.
This instrument uses the AC phase differential system to measure
earth resistance. This assures accurate measurements unaffected
by earth voltage and auxiliary earth resistance.
1.2 Features
(1) High performance
Performance of this instrument surpasses the requirements of the
Japanese standard JIS C1304 (2002) as well as complies with
EN 61557 and the safety standard IEC 61010.
(2) Wide measurement range
The earth resistance measurement ranges are extended to 115%
of each of the measurement ranges. This is useful especially for
evaluation of resistances of approximately 10
Ω
and 100
Ω
that are
important for earthing evaluation during electrical installation work.
(3) Auxiliary earth resistance check function
Auxiliary earth resistance, which causes measurement errors, can
be checked with respect to each of the auxiliary earth poles.
(4) Switchable measurement frequency
Measurement frequency can be switched to minimize the influence
of harmonic earth voltage and to assure stable measurement.
(5) Simplified measurement function
Earth resistance can be measured easily using a low-resistance
grounding such as the earth of a commercial power supply.
1 Overview
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Appx.
Ind.