Sonel MPI-540 - 14 Laboratory services

MPI-540 – USER MANUAL
202
11.2.7 Clamps N-1
Clamps N-1, as optional accessories for instruments produced by SONEL S.A., are compatible
with earth resistance meters of MRU series and are designed to be signal transmitting clamps in dou-
ble-clamp measurements.
The output signal is transmitted via two banana plugs.
Overloads:
Current Range
I  1000 A
1000 A  I  1200 A
Operating mode
continuous
1
15 minutes of measure-
ment, followed by 30-
minute break
1)
For frequencies f  1kHz. Limiting the maximum current in continuous operation for frequencies
above 1kHz according to the ratio:
[kHz] f
A1000

ciagly
I
Reference conditions
a) temperature .................................................................................................................. +20…+26°C
b) relative humidity ............................................................................................................... 20…75%
c) conductor ........................................................................................................... centred in the jaws
d) current constant component ................................................................................................... none
e) permanent magnetic field .............................................................. <40 A/m (Earth's magnetic field)
f) variable, external magnetic field ............................................................................................. none
g) conductors in the immediate vicinity ......................................................................... no current flow
Technical data
a) output for maximum power .................................................................................................... 1A AC
b) przełożenie ........................................................................................................................... 1000/1
c) frequency range........................................................................................................ 30 Hz...10 kHz
d) insulation type ............................................................................. double, according to EN 61010-1
e) measurement category according to EN 61010-1 ............................................................... III 600 V
f) protection class according to EN 60529 ................................................. IP40, with open jaws: IP30
g) dimensions ....................................................................................................... 216 × 111 × 45 mm
h) weight ......................................................................................................................... approx. 550 g
i) jaws opening distance .......................................................................................................... 53 mm
j) height of open jaws ............................................................................................................. 139 mm
k) maximum diameter of tested cable .................................................................................... 52 mm
l) operating temperature ............................................................................................... -10C…+55C
m) relative humidity ..................................................................................................................... 85%
n) altitude (above sea level) ..................................................................................................  2000 m
o) quality standard ...............................................................................................................................
............ design, construction and manufacturing are ISO 9001, ISO 14001, PN-N-18001 compliant
p) the product meets the EMC requirements according to ................ EN 61000-6-3 and EN 61000-6-2