Electrical Installation; Insulation Checks; Mains Fuses - ABB DCS800 Series Installation Manual

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Electrical Installation

WARNING!
The electrical installation described in this chapter should only be carried out by a
qualified electrician. The
followed.
Negligence of these instructions can cause injury or death.
Attention:
Additional information about this chapter especially regarding EMC can be found in
the manual Technical Guide (3ADW000163).

Insulation Checks

Every DCS800-A Enclosed Converter has been tested for insulation between main
armature circuit and cabinet at the factory. Therefore there is no need to check the
insulation of the unit again. When checking the insulation of the whole installation,
proceed in the following manner:
WARNING!
Insulation checks must be performed before connecting the DCS800-A to the
mains. Before proceeding with the insulation resistance measurements make sure
that the DCS800-A is disconnected from the mains.

Mains Fuses

Fuses are needed to protect the DC converter in case of an internal short circuit.
The DCS800-A Enclosed Converter is equipped with internal input fuses. For more
information see manuals DCS800 Technical Catalogue (3ADW000192) and
DCS800 Hardware Manual (3ADW000194). If a fuse is blown, it must be replaced
with the proper ultra rapid fuse.
Electrical Installation
Safety Instructions
1.) Check that the motor cable is disconnected from the DCS800-A
output terminals C1 and D1.
2.) Measure the insulation resistances of motor cable and the motor
between each phase and Protective Earth (PE), using a measuring
voltage at least equal to the mains voltage, but not higher than 500
VDC. The insulation resistance must be higher than 1 MΩ.
3ADW000352R0101 DCS800-A Installation Manual e a
at the beginning of this manual must be