DAB E-BOX 2G M, Инструкция по установке и обслуживанию

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ENGLISH
39
7. ELECTRICAL CONNECTIONS

Ensure that the main switch on the power
distribution panel is in OFF position (0) and that
no one can switch on the power accidentally
before connecting the power cables to the
terminals:
L1 - L2 - L3 -
for three-phase systems
L - N - for single-phase systems
and to the insulating switch QS1.
Insert the fuse in the respective
fuse holder corresponding to the
applied voltage (230V or 300V).
Selecting the wrong fuse holder can
cause irreparable damage to the
electric panel!

Scrupulously observe all the regulations in force
concerning safety and accident prevention .
Ensure that all the terminals are fully
tightened,
paying particular attention
to the earth screw.

Connect the cables to the terminal board as
indicated in the wiring diagrams .

Check that all the connecting cables are in
excellent condition, with the external sheathing
unbroken.
The system must be correctly and
safely earthed as required by the
regulations in force.
Check that the differential switch
that protects the system is of the
correct dimensions.
7.1 Instrumental checks to be carried out by the
installer

Continuity of the protection leads and of the main
and supplementary equipotential circuits.

Insulating resistance of the electric system
between the active circuits L1-L2-L3 (short-
circuited with each other) and the equipotential
protection circuit.

Testing the efficiency of the differential protection.

Testing the voltage applied between the active
circuits L1-L2-L3 (short-circuited with each other)
and the equipotential protection circuit.

Testing operation.