Currents (A Dc And Ac) - Chauvin Arnoux C.A 5005 Notice De Fonctionnement

5 - DC AND AC CURRENTS
For DC currents: Always switch off the circuit to test before
connecting the multimeter to the circuit. If the «Fus.» light
comes on, change the faulty fuse(s) (Reminder: minimum
voltage of 80 V). Connect the leads to the multimeter and
connect in series to the circuit with:
-the red lead in the «mA DC» terminal, up to 1 A DC
-the red lead in the «10 A DC» terminal, from 1 A DC to 10 A DC
For AC currents: mandatory use of the MN89 miniclamp
originally supplied with the multimeter. It outputs 100 mV DC for
1 A AC. Measurement possible up to 240 A AC max. Connect
the black plug of the miniclamp to the «COM» terminal and the
connect the red plug to the "
Clamp on only one conductor with the MN 89. For the other
specifications of the MN 89, refer to its user manual.
I When the order of magnitude is not known, place the switch on the
highest range then progressively lower to the appropriate range.
On DC current, switch off the power supply to the circuit ill
before changing range.
I To get the current in mA or A, multiply the value read on the
appropriate scale by the reading cœfficient shown in the table.
A 50 µA (1) 1 mA
Scale
Reading
x 0.5 (2) x 0.01
cœfficient
Voltage at
100 mV 150 mV
terminals (3)
Accuracy (4)
Protection
Limitation 10 min On, 5 min Off up to +40°C max
(1) Commonlolhe 100 mVDC range
(2) Reading in µA.
(3) Without the leads Resistance of thepair of leads supplied: approx. 70 m
(4) ln % of the end of scale
Above 200 A AC (nominal range of the MN 89 miniclamp) limit
the time of use. Do not use the miniclamp on a network with a
voltage greater than 600 V in relation to the earth.
A AC with
I ≤ 200 A~
miniclamp MN 89
Operating Permanent
(1) With a frequency F ≤ 1 kHz and a crest factor FC < 3
14
" terminal.
10 mA 100 mA 1 A
100
x 0.1 x 1 x 0.01
180 mV 200 mV 800 mV
2.5%
Fuse 1 A HPC
200 A~ < I ≤ 240 A~
10 min On
(1)
10 min Off
10 A
x 0.01
5%
Fuse 10 A
HBC