ABB ACS880-37LC-0390A-7, Руководство по оборудованию, Страница: 79 / 242

Selecting the power cables
￭
General guidelines
Select the input power and motor cables according to local regulations.
• Current: Select a cable capable of carrying the maximum load current and suitable for
the prospective short-circuit provided by the supply network. The method of installation
and ambient temperature affect the cable current carrying capacity. Obey local
regulations and laws.
• Temperature: For an IEC installation, select a cable rated for at least 70 °C (158 °F)
maximum permissible temperature of conductor in continuous use.
For North America, select a cable rated for at least 75 °C (167 °F).
Important: For certain product types or option configurations higher temperature rating
may be required. See the technical data for details.
• Voltage: 600 V AC cable is accepted for up to 500 V AC. 750 V AC cable is accepted
for up to 600 V AC. 1000 V AC cable is accepted for up to 690 V AC.
To comply with the EMC requirements of the CE mark, use one of the preferred cable types.
See
Preferred power cable types (page 79) .
Symmetrical shielded cable reduces electromagnetic emission of the whole drive system
as well as the stress on motor insulation, bearing currents and wear.
Metal conduit reduces electromagnetic emission of the whole drive system.
￭
Typical power cable sizes
See the technical data.
￭
Power cable types
Preferred power cable types
This section presents the preferred cable types. Make sure that the selected cable type also
complies with local/state/country electrical codes.
Use as motor cabling Use as input power cabling Cable type
Yes Yes
„
„
PE
Symmetrical shielded (or armored)
cable with three phase conductors
and concentric PE conductor as
shield (or armor)
Yes Yes
„
„
PE
Symmetrical shielded (or armored)
cable with three phase conductors
and symmetrically constructed PE
conductor and a shield (or armor)
Guidelines for planning the electrical installation 79