4
6. Remove the cover(s)
7. Attach a residual voltage warning sticker to the drive in the local language
8. Make sure that the drive is compatible with the grounding system
You can connect all drives to a symmetrically grounded TN-S system (center-grounded wye). If you install the drive to a
different system, you must remove the EMC screw (disconnect the EMC filter) and/or remove the VAR screw (disconnect
the varistor circuit).
9. Measure the insulation of the power cables and the motor
Measure the insulation of the input cable before you connect it to the drive. Obey
the local regulations.
Measure the insulation of the motor cable and motor when the cable is
disconnected from the drive. Measure the insulation resistance between each
phase conductor and the PE conductor. Use a measuring voltage of 1000 V DC. The
insulation resistance of an ABB motor must be more than 100 Mohm (reference
value at 25 °C [77 °F]). For the insulation resistance of other motors, see the
manufacturer’s instructions. Moisture inside the motor casing decreases the
insulation resistance. If you think that there is moisture inside the motor casing, dry
the motor and do the measurement again.
10. Connect the power cables
Connection diagram (shielded cables)
CAUTION!
ABB recommends to use a lightning pole to avoid lightning strike to the drive. Make sure that the
lightening pole ground is not common for PV cell, drive, and motor.
Frame size Symmetrically grounded
TN-S systems (center-
grounded wye)
Corner-grounded delta
and midpoint-grounded
delta systems
IT systems (ungrounded
or high-resistance
grounded)
TT systems
1) 2)
1) A residual current device must be installed in the supply system.
2) ABB does not guarantee the EMC category or the operation of the ground leakage detector built inside the drive.
R4…R5
Do not remove EMC or
VAR screw.
Note:
The drive is not
evaluated for use on
these systems by IEC
standards.
Remove EMC screws
(2 pieces) and VAR screw.
Remove EMC screws
(2 pieces) and VAR screw.
R4, IP21 (UL Type 1)
2
1
3
R4 and R5, IP55 (UL Type 12)
1
2
3
2
1
3
R5, IP21 (UL Type 1)
R5, IP21 (UL Type 1)
4
5
U1-PE, V1-PE, W1-PE
U1
V1
W1
PE
M
3~
ohm
