Power Electronics SD 300 Series, Getting Started Manual

Page: 64 / 354

SD300 POWER ELECTRONICS
62
POWER CONNECTIONS
Ground Connection
Before connecting the power conductors, make sure that the chassis of the
drive and the adjoining cabinets are connected to ground through the
dedicated (PE) terminals. The PE terminals are located in the bottom part of
the drive and labelled with the appropriate ground connection.
PE terminals location
Motor chassis grounding must be connected to the drive. In other words,
connect the motor’s ground conductor to the PE output terminal of the drive
and not to the installation’s ground. We recommend that the cross section of
the motor’s ground conductor (PE) should have at least the cross section of
the active conductor (U, V, W). Additionally, it should be installed following
the recommendations indicated in previous sub-section.
When connecting the earth, ensure that all connected terminal lugs are
securely tightened and protected from mechanical forces. Check the
recommended tightening torque in
“Recommended Cable” table, from this
section.