ABB ACH580 Series Installation, Operation And Maintenance Manual page 13

ACH580 Ultra-Low Harmonic Drives Installation, Operation and Maintenance Manual
4. Install wiring
WARNING! Ensure the motor is compatible for use with the ACH580 Ultra-Low
Harmonic Drives. The ACH580 Ultra-Low Harmonic Drives 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 Checking the compatibility with IT (ungrounded) and
corner-grounded TN systems (North America) in the
manual, publication number 3AXD50000037066.
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. Before testing make sure the cable is not connected to the drive.
2. Check the insulation of the input cable according to local regulations. Minimum cable
temperature rating of 70 °C (158 °F) must be used.
Note: For drives rated over 100 amperes, the power cables must be rated for 75 °C
(167 °F) or higher. For UL Type 12 drives of frame R6, the power cables must be
rated for 90 °C (194 °F) minimum.
3. 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 (77 °F).
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 grounding terminals in series.
ACH580-31 Drives Hardware
ACH580 Ultra-Low Harmonic Drives Installation
13