ABB ACS800-07-0610-3 Hardware Manual page 68

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• The cable must be able to carry the drive load current. See chapter Technical
data for the rated currents.
• The cable must be rated for at least 70
conductor in continuous use. For US, see
• The inductance and impedance of the PE conductor/cable (grounding wire) must
be rated according to permissible touch voltage appearing under fault conditions
(so that the fault point voltage will not rise excessively when an ground fault
occurs).
• 600 VAC cable is accepted for up to 500 VAC. For 690 VAC rated equipment, the
rated voltage between the conductors of the cable should be minimum 1 kV.
For drive frame size R5 and larger, or motors larger than 30 kW, symmetrical
shielded motor cable must be used (figure below). A four-conductor system can be
used up to frame size R4 with up to 30 kW motors, but shielded symmetrical motor
cable is recommended.
Note: When continuous conduit is employed, shielded cable is not required.
A four-conductor system is allowed for input cabling, but shielded symmetrical cable
is recommended. To operate as a protective conductor, the shield conductivity must
be as follows when the protective conductor is made of the same metal as the phase
conductors:
Cross-sectional area of the phase
conductors
Compared to a four-conductor system, the use of symmetrical shielded cable
reduces electromagnetic emission of the whole drive system as well as motor
bearing currents and wear.
Note: The cabinet configuration of the drive may require multiple supply and/or
motor cabling. Refer to the connection diagrams in
The motor cable and its PE pigtail (twisted screen) should be kept as short as
possible in order to reduce electromagnetic emission as well as capacitive current.
Planning the electrical installation
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2
S (mm )
S < 16
16 < S < 35
35 < S
°
C maximum permissible temperature of
Additional US
Minimum cross-sectional area of the
corresponding protective conductor
2
S (mm )
p
S
16
S/2
Electrical
requirements.
installation.