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
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.
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