Power Electronics SD 300 Series, Getting Started Manual

Page: 68 / 354

SD300 POWER ELECTRONICS
66
POWER CONNECTIONS
EMC Recommendations
To conform the EMC directive, it is necessary that these instructions be
followed as closely as possible. Follow the usual safety procedures when
working with electrical equipment. All electrical connections to the filter,
inverter and motor must be made by a qualified electrical technician.
1. Check the filter rating label to ensure that the current, voltage
rating and part number are correct.
2. For best results, the filter should be fitted as closely as possible to
the incoming mains supply of the wiring enclousure, usually
directly after the enclousures circuit breaker or supply switch.
3. The back panel of the wiring cabinet of board should be prepared
for the mounting dimensions of the filter. Be sure to remove any
paint etc from the mounting holes and face area of the panel to
ensure the best possible earthing of the filter.
4. Mount the filter securely.
5. Connect the mains supply to the filter terminals marked LINE,
connect any earth cables to the earth stud provided. Connect the
filter terminals marked LOAD to the mains input of the inverter
using short lengths of appropriate gauge cable.
6. Connect the motor and fit the ferrite core (output chokes) as close
to the inverter as possible. Armoured or screened cable should be
used with the 3 phase conductors only threaded twice through the
center of the ferrite core. The earth conductor should be securely
earthed at both drive and motor ends. The screen should be
connected to the enclousure body via and earthed cable gland.
7. Connect any control cables as instructed in
“Wiring
Recommendations
” section, inside “CONTROL CONNECTION”
section.
It is important that all lead lengths are kept as short as possible and that
incoming mains and outgoing motor cables are kept well separated.