Rockwell Automation 1557 MEDIUM VOLTAGE AC DRIVE - Manual (Page 195)

INSTALLATION 8-9
1557-UM050F-EN-P – June 2013
POWER WIRING SELECTION
The following tables identify general wire selections that will be encountered when installing the Bulletin
1557 drive system.
General Notes:
Adherence to the following recommended field power cabling insulation levels for Medium Voltage Drives
will help to ensure trouble free start-up and operation. The cable insulation level must be increased over
that which would be supplied for an Across-the-line application with the same rated line to line voltage.
Either shielded or unshielded cable may be used based on the criteria considered by the distribution
system designer.
2400V and 3300 V Medium Voltage Drives
Pulse #
Isolation Transformer
or Line Reactor
Cabling Source Cable
Insulation
Rating
From To
6, 12
Isolation
Transformer
Tx. Secondary or Secondaries Line side converter (Drive) 5 kV
Line side converter (Drive)* Remote DC Link Reactor* 5 kV
Remote DC Link Reactor*
Machine side converter
(Drive)*
5 kV
Machine side converter (Drive) Motor 5 kV
Machine side converter
(Drive)* Remote Motor Filter
Capacitors*
5 kV
6 Line Reactor
Power System
Line side converter (Drive)
or Input Contactor
5 kV
Line side converter (Drive)* Remote DC Link Reactor* 5 kV
Remote DC Link Reactor*
Machine side converter
(Drive)*
5 kV
Machine side converter (Drive) Motor 5 kV
Machine side converter
(Drive)* Remote Motor Filter
Capacitors*
5 kV
* These external power connections are only required on the larger horsepower Medium Voltage Drives.
Table 8.6 – Power Wire Selection (2400V and 3300 V)