MRU-200
● MRU-200-GPS – USER MANUAL
53
Other technical data
a) type of insulation ...................................... double, in accordance with EN 61010-1 and IEC 61557
b) measurement category (for 2000 m a.s.l.) .................................. IV 300 V in acc. with EN 61010-1
c) protection grade of the casing in accordance with EN 60529 ................................................... IP54
d) maximum interference voltage AC + DC at which a measurement may be performed............. 24 V
e) maximum measured interference voltage .............................................................................. 100 V
f) maximum interference current at which a measurement of the earth resistance by means of the
clamp method is performed .............................................................................................. 3 A RMS
g) frequency of the measurement current ................... 125 Hz for 16 2/3 Hz, 50 Hz, 400 Hz networks
............................................................................................................. 150 Hz for 60 Hz networks
h) measurement voltage and current for 2P .......................... U < 24 V RMS, I
≥ 200 mA for R ≤ 60
i)
measurement voltage for R
E
3P, R
E
4P ........................................................................ 25 V or 50 V
j)
measurement current (short-circuit current) for R
E
3P, R
E
4P ............................................. >200 mA
k) maximum resistance of auxiliary electrodes ......................................................................... 20 k
l)
signalling of insufficient clamp current for ..........................................................................
≤0,5 mA
m) power supply of the meter ......................... accumulator package type SONEL NiMH 4,8 V 4,2 Ah
n) parameters of AC adapter for the battery charge ..............................
100 V…240 V, 50 Hz…60 Hz
o) number of measurements for 2P ................................................. >1500 (1
, 2 measurement/min)
p) number of measurements for R
E
3P, R
E
4P ...... >1200 (R
E
=10
, R
H
=R
S
=100
, 2 measurement/min)
q) duration of a resistance measurement by means of the two-pole method ............................... <6 s
r) duration of a resistance and resistivity measurement by means of other methods .................. <8 s
s)
position Accuracy (in good weather conditions and visibility of satellites) .......... 3 m (50%CEP)
t) dimensions ....................................................................................................... 288 x 223 x 75 mm
u) mass of the meter with accumulators ................................................................................ ca. 2 kg
v) working temperature .....................................................................................................-10
…+50ºC
w) operating temperature range for battery charger .................................................... +10
ºC to +35ºC
x) temperatures at which loading is interrupted......................................................... < 5
ºC and ≥50ºC
y) reference temperature .......................................................................................................
23 ±2ºC
z) storage temperature .....................................................................................................-20
…+80ºC
aa) relative humidity .............................................................................................................. 20
…90%
bb) relative humidity nominal ................................................................................................. 40
…60%
cc) altitude (above sea level) .................................................................................................
≤2000 m*
dd) quality standard ............................................. design and production in accordance with ISO 9001
ee) the product meets EMC requirements according to the following standards ...................................
...................................................................................................... EN 61326-1 and EN 61326-2-2
NOTE
* Information about the use of meter at altitude from 2000 m to 5000 m
As for voltage inputs E, ES, S, H the instrument is to be considered downgraded to measurement
category CAT III 300 V to ground (max 300 V between inputs) or CAT IV 150 V to ground (max 150 V
between inputs). Markings and symbols indicated on the instrument are to be considered valid when
using it at altitude lower than 2000 m.
EN 55022 Compliance statement
MRU-200 / MRU-200-GPS is a class A product. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate measures.