Emc - Compliant Cable Routing On The Plant Side On Cable Racks And In Cable Routes - Siemens SINAMICS G130 Engineering Manual

EMC Installation Guideline
Engineering Information

EMC - compliant cable routing on the plant side on cable racks and in cable routes

1)
When single-wire cables (e.g. unshielded supply connection cables) are used in three-phase systems, the three
phase conductors (L1, L2, and L3) must be bundled symmetrically to minimize the magnetic leakage fields. This is
particularly important when several single-wire cables need to be routed in parallel for each phase of a three-phase
system due to high amperages. The illustration below uses an example of a three-phase system with two single-wire
cables per phase routed in parallel.
2)
When several three-phase motor cables have to be routed in parallel between the converter and the associated
motor, it has to be ensured that all three phases of the three-phase system are routed within each motor cable. This
minimizes the magnetic leakage fields. The illustration below uses an example of three shielded, three-phase motor
cables routed in parallel.
3)
When DC cables (DC link cables or connection cables between Braking Modules and the associated braking
resistors) are routed, the feed and return lines must be routed in parallel with as little space between them as
possible to minimize magnetic leakage fields.
SINAMICS Engineering Manual - May 2008
145/396
© Siemens AG