4-Pole m measurement
Voltage/Current measurement (EN 61557 part 5)
Selectable from 41 to 513Hz (see table in § 6.2)
> 200mA
AC
test frequency
250Vrms
Max. Value for R
H
& R
S
100k
E
at
128Hz, then 3 measurements per s.
E
at
128Hz, then 3 measurements per s.
32V, test frequency of 128Hz, R
H
and R
S
= 1k
The operating error of AC resistance measurements can be less than that speci
are matched to those of the current channel.
Measurement of auxiliary electrodes R
H
, R
S
, R
ES
, R
E
The
START
button must be pressed for more than 2 s. For frequencies between
41 and 256Hz, the resistance of the auxiliary earth electrodes is measured at the
test frequency set. At higher frequencies the resistance is measured at 256Hz.
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Содержание 6470-b
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