Install Wiring; Checking The Insulation Of The Assembly; Ground Connections - ABB ACH580 Series Installation, Operation And Maintenance Manual

16

4. Install wiring

WARNING! Ensure the motor is compatible for use with the ACH580. The ACH580
must be installed by a competent person. If in doubt, contact your local ABB sales or
service office.
WARNING! If the drive will be connected on an IT (ungrounded) system, make sure
neither the EMC filter nor the ground-to-phase varistor are connected. If the drive will
be connected on a corner-grounded TN system, make sure you have not connected
the EMC filter. See
grounded TN systems (North America)

Checking the insulation of the assembly

WARNING! Do not make any voltage tolerance or insulation resistance tests on any
part of the drive as testing can damage the drive. The drive has been tested at the
factory.
1. Check the insulation of the input cable according to local regulations before
connection to the drive. Minimum cable temperature rating of 167 °F (75 °C) must be
used.
2. With the motor cable connected to the motor, but NOT to the drive output terminals
T1/U, T2/V and T3/W, measure the insulation resistance between the phase
conductors and between each phase conductor and the Protective Earth (PE)
conductor, using a measuring voltage of 1000 V DC. The insulation resistance must
exceed 100 Mohm at 25 °C.

Ground connections

For personnel safety, proper operation and to reduce electromagnetic emission/pick-
up, the drive and the motor must be grounded at the installation site.
• Conductors must be adequately sized as required by safety regulations.
• Power cable shields must be connected to the drive PE terminal in order to meet
safety regulations.
• Power cable shields are suitable for use as equipment grounding conductors only
when the shield conductors are adequately sized as required by safety
regulations.
• In multiple drive installations, do not connect drive terminals in series.
ACH580-01 Installation
ACH580 Installation, Operation and Maintenance Manual
Checking the compatibility with IT (ungrounded) and corner-
on page 17.