27
3 - DESCRIPTION
See diagrams page 107
The functions and the display are described succinctly below so that you can
familiarise yourself with your clamp.
The following chapter “ Operating procedures ” explains each function in detail.
3-1 CLAMPING THE CABLE
➀
Jaws
They enclose the cable to measure currents.
The jaw mechanism has a non-pinch design.
The red colour has been chosen to identify the potentially dangerous zone on
current measurement.
➁
Centreing marks
Three marks indicate the reference position of the conductor within the
magnetic circuit.
The carefully designed form of the magnetic circuit offers a high clamping
capacity and satisfies the majority of applications with high currents.
A 2 busbars 50 x 5 mm
B 2 cables Ø 25 mm
C cable Ø 42 mm
Reminder
: The clamp must only enclose 1 phase conductor, which can
physically be subdivided into 2 smaller cross-sections. In principle, the clamp
can not measure current in a conductor that includes the phase cable and the
neutral cable.
➂
Guard
When clamped on a cable, the non-slip guard, around the outside of the clamp,
protects the user from accidental contact with an uninsulated conductor.