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2.1 FUNCTIONS OF THE DEVICE
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Easy-to-use device intended for measurement of the loop impedance in a
parallel earth network, by a simpler method than the traditional method with 2
auxiliary rods.
Loop ohmmeter
: measurement of loop impedances from 0.01Ω to 1,500Ω.
The ohmmeter function makes allowance for the presence of inductances
in the loop, making impedance measurements more accurate at low
values.
Ammeter
: current measurements from 0.2mA to 40A.
Contact voltage
: the contact voltage is estimated by calculating the product of
the loop impedance by the leakage current. The value found is an upper
bound on the voltage between the measurement point and earth, since the
impedance taken into account is that of the whole loop.
■
Large multi-function OLED display unit.
■
Display in Standard mode (only 1 screen) or Advanced mode (3 screens).
■
Clamping diameter 35mm.
■
Storage of measurements (
Ω
and/or A, with time-stamping).
C.A. 6416: up to 300 measurements stored.
C.A. 6417: up to 2000 measurements stored.
■
Possibility of reading out the stored measurements on the clamp itself.
C.A. 6417: Read-out also possible via Bluetooth®
■
Measurement hold by the
HOLD
key and/or by opening the clamp (PRE-
HOLD mode).
■
Weight limited by the use of powerful magnetic materials.
■
Opening the clamp made easy by a trigger with a force compensation system.
■
Advanced ergonomics (grip and reading of the display unit).
■
Small influence of spurious currents.
