Cable sizes, Conduit, Cable sizes conduit – Rockwell Automation 2099-BMxx Kinetix 7000 High Power Servo Drive User Manual User Manual
Page 73
Rockwell Automation Publication 2099-UM001D-EN-P - December 2012
73
Connect the Kinetix 7000 Drive System
Chapter 4
Cable Sizes
In the table below the appropriate VFD shielded cable to use based on 150%
overload capability and 25 °C (77 °F) operating temperature is shown.
For applications above 130 Amps, use thick insulation lead wire, such as RHW-2
or equal. Make sure you thread the four wires (U, V, W, and ground) through a
single, grounded, metal conduit.
Table 30 - 1.5x Rated Continuous Motor Current Cable Size
Conduit
For applications above 130 Amperes, metal conduit is required for cable
distribution. Follow these guidelines:
• Drives are normally mounted in cabinets, and ground connections are
made at a common ground point in the cabinet. If the conduit is
connected to the motor junction box and the drive end is connected to the
ground panel in the cabinet, you do not need any additional conduit
connections.
• Route no more than three sets of motor leads and a ground wire through a
single conduit. This minimizes cross talk that also reduces the effectiveness
of the noise reduction methods described. If more than three drive/motor
connections per conduit are required, use shielded cable. If practical, each
conduit should contain only one set of motor leads.
• You should use a thick insulation lead wire, such as type RHW-2 or equal.
Motor Current
Cable Size
mm
2
AWG
12 A
1.5
16
17 A
2.5
14
21 A
4
12
30 A
6
10
55 A
10
8
65 A
16
6
95 A
25
4
130 A
35
2