Planning the electrical installation
75
To operate as a protective conductor, the shield conductivity requirements according
to IEC 60439-1 are shown below when the protective conductor is made of the same
metal as the phase conductors. The table applies also to four-conductor systems.
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 chapter
Keep the motor cable and its PE pigtail (twisted screen) as short as possible in order
to reduce high-frequency electromagnetic emissions.
Cross-sectional area of the phase
conductors
S (mm
2
)
Minimum cross-sectional area
of the corresponding protective
conductor
S
p
(mm
2
)
S < 16
S
16 < S < 35
16
35 < S < 400
S/2
400 < S < 800
200
800 < S
S/4
Summary of Contents for ACS800-17LC
Page 1: ...ABB industrial drives Hardware manual ACS800 17LC Drives 55 to 5200 kW ...
Page 4: ......
Page 10: ...Update notice 6 ...
Page 18: ...Table of contents 12 ...
Page 26: ...Safety instructions 20 ...
Page 32: ...Introduction to the manual 26 ...
Page 60: ...Hardware description 54 ...
Page 74: ...Mechanical installation 68 ...
Page 114: ...Electrical installation 108 ...
Page 142: ...Maintenance 136 ...
Page 150: ...Internal cooling circuit 144 ...
Page 179: ...Dimensions 173 Frame sizes R7i R7i and R8i R8i bottom entry exit ...
Page 180: ...Dimensions 174 Frame sizes R7i R7i and R8i R8i marine units C121 ...
Page 182: ...www abb com drives www abb com drivespartners Contact us 3AUA0000065339 Rev B EN 2016 06 07 ...