Summary
Preface
P. 6
Chapter 2
P. 17
Technical data
Chapter 5
P. 76
Reception, storage
and installation
Chapter 4
P. 54
General information
Chapter 3
P. 47
Application notes
Chapter 6
P. 115
Options
Chapter 7
P. 129
Preventive maintenance
Chapter 1
P. 15
Overview
and installation diagram
Answer Drives 1000
110
5
5.9.4 MOTOR CABLES
5.9.4.1 CONNECTION CABLES BETWEEN
THE DRIVE AND MOTOR
NOTE
The power cables of the motor must be screened. Problems could arise to
the RFI if screened cables are not used.
Screened cables ensure high immunity against disturbance generated by
the drive. The high-frequency current through the screen returns directly
to the drive, instead of flowing through the motor housing.
The cable screening must be continuous and must be grounded on
both terminals: on the ground terminal of the motor and on the ground
terminal PE of the drive. In general, always provide a dedicated cable, with
a minimum section equal to 50% of the phase cable, which connects the
drive PE terminal directly with the corresponding terminal of the motor.
This cable has the function of providing a preferential way of closing in
order to return to the drive the disturbances generated by itself, avoiding
them to propagate to the ground system of the equipment. The ground
connection of the motor must be made locally directly to the equipment
ground system.
5.9.4.2 TYPES OF CONNECTION CABLES BETWEEN DRIVE AND MOTOR FOR COMPLIANCE
WITH THE EMC DIRECTIVE AND FOR CONTAINMENT OF EDDY CURRENTS
Figure 5.9.4.1
Typical connection on the motor
5.9.4 MOTOR CABLES - 5.9.4.1 - 5.9.4.2
a) Recommended cable
Symmetrical screened cable
- 3 phase conductors arranged symmetrically
- Single an unscreened conductor
- 3 PE conductors arranged in symmetrical way
- External screen for phase and Pe conductors
b) Recommended cable
Symmetrical screened cable: same as above but
with a single PE cable positioned at the centre
of the cable.
c) Recommended cable
Symmetrical screened cable: screen with section
50% greater than the section of each conductor
to make, (a separate PE conductor is required
only if the conductivity of the cable screen is not
sufficient.).
CABLE
SHIELD
Summary of Contents for AD1A008FBBNH
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