Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive (A Frame) - ForGe Control - Manual (Page 38)

38 Rockwell Automation Publication 7000A-UM200C-EN-P - June 2014
Chapter 2 Drive Installation
IEC Component and Device
Designations PowerFlex 7000 electrical drawings use conventions that are based on IEC
(International Electrotechnical Commission) standards, while remaining
basically compatible with North American ANSI (American National Standards
Institute) standards. The symbols used to identify components on the drawings
are international and a full listing of the symbols is given as part of each
PowerFlex 7000 electrical drawing (ED) set. The device designations used on the
drawings and labeling are also listed with explanations on each drawing set.
Wiring identification uses a source/destination wire number convention on point
to point multi-conductor wiring and in situations where the system is warranted.
The wire-numbering system of unique, single numbers for multi-drop and point
to point wiring continues to be used for general control and power wiring.
Wiring that connects between the sheets or that ends at one point and starts at
another point on a drawing has an arrow and drawing reference to indicate the
ongoing connection. The drawing reference indicates the sheet and the X/Y
coordinates of the continuation point. The reference system is explained on a
sheet in each drawing set. The unique wire numbering system serves as
confirmation that the correct wire is being traced from sheet to sheet or across a
drawing. Wires in multi-conductor cables are typically identified by color rather
than by number. The abbreviations used to identify the colors on the drawings are
fully identified on a sheet in the drawing set.
Power Wiring Selection The following tables identify general wire selections that will be encountered
when installing the PowerFlex 7000 “A” Frame drive line-up.
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. However, NEC requires shielded cables for
installations above 2 kV.
Cable Insulation
The cable insulation requirements for the PowerFlex 7000 “A” Frame drive are
given in the following tables.
ATTENTION: Voltage ratings shown in the following tables are peak line-to-
ground. Some cable manufacturers rate voltage line-to-line RMS. Ensure the
cable meets the rating specified in the following tables.