BERTHOLD TECHNOLOGIES LB 480, User Manual, Page: 89 / 450

SENSseries LB 480 Level measurement
BERTHOLD TECHNOLOGIES GmbH & Co. KG
1 – 89
Volume 1 6 Electrical Installation
1
Separator
A separator
– must be present (regulation according to EN 61010-1)
– must be easily accessible for maintenance personnel
– has to be included in the company's internal documentation
It can be installed in the form of a circuit breaker or as a switch and
must meet the requirements of IEC 947-1 and IEC 947-3. If a fuse
is used, it must trigger only at a current of greater than 4 amps per
unit.
General points that are important for installation
IMPORTANT
Open the terminal compartment in dry ambient conditions, not in
the rain.
Moisture in the terminal compartment can both cause a short cir-
cuit with other lines or cancel the explosion protection.
• Please follow the signs on the detectors.
• Connect the cables with special care.
• The connecting cable and its installation must comply with
applicable regulations.
• Make sure when installing the cables that mechanical damage
to the conductor insulation from sharp edges or moving metal
parts will be ruled out. If necessary, install the cable appropri-
ately protected, for example in conduits.
• Install the connecting cables in the terminal compartment so
that
–
dirt and moisture is avoided in the terminal compartment;
– the wires are not damaged when stripping;
– the conductor insulation or the collar of the ferrule extends
into the housing of the terminal body;
– bare conductive parts of the lines (e.g. small wires of a
strand) do not protrude from the terminal body;
– the length of the ferrule or the stripped wire can be 10 mm,
so that the wire is securely held in the spring-type terminal;
– if ferrules are used, the conductor insulation extends into
the collar of the ferrule;
– the minimum bending radii permitted for the respective
cross-section are not fallen below;
– install the cables strain-relieved and without abrasion.
• The SENSseries detectors may only be operated with fully
closed housing.
• Cleaning corroded threads at the cable glands or cable conduits
using abrasives or a wire brush is not allowed.