Connection Procedure - ABB ACQ580-01 Quick Installation And Start-Up Manual

10. Measure the insulation resistance of the power cables and the motor
Measure the insulation resistance of the input cable before you connect it to the
drive. Obey local regulations.
Measure the insulation resistance 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 or 77 °F). For the insulation resistance of other motors,
see the manufacturer's instructions. Moisture inside the motor decreases the
insulation resistance. If you think that there is moisture, dry the motor and do
the measurement again.
11. Connect the power cables

UL (NEC) connection diagram with symmetrically shielded cable or conduit
PE
2T1 4T2 6T3
a
L1 L2 L3
PE
Drive with disconnect option
L1 L2 L3
PE
a
PE L1 L2 L3
Drive without disconnect option
Note: UL (NEC) installation can include separate insulated conductors
inside a conduit, shielded VFD cable in conduit, or shielded VFD cable
without conduit. The normal dashed symbol (c) in this diagram
represents the shield of shielded VFD cable. The same solid symbol (b)
represents conduit.


Connection procedure

1. Prepare the power cables (shielded cable).
•
Prepare the ends of the input power cable and motor cable as illustrated in the applicable figure (b).
•
Install the conduit fitting or cord grip (not supplied).
•
Slide the cables through the fitting or grip. After wires are terminated, complete installation of conduit and/or
tighten the cord grip to achieve a water-tight seal.
UDC+
UDC-
R- T1/U T2/V T3/W
R+
b
f
c
e
U1
UDC+
UDC- T1/U T2/V T3/W
R-
R+
b
f
c
e
U1
WARNING: If installing drive indoors or
outdoors in a wet, dirty, dusty,
corrosive or similar environment, all
cable, conduit and fittings must be approved
for use in this type of environment. Fittings
must be properly tightened to the drive such
d
that no leakage occurs. Failure to follow these
instructions can lead to injury or death, or
damage to the equipment.
3
a. Insulated ground conductor in a conduit:
Ground to drive's PE terminal and to the
distribution panel ground bus. For a VFD
cable installation see d.
b. Conduit ground: Bond the conduit to the
d
V1
drive's conduit box and to the distribution
W1
panel enclosure. For a VFD cable installation
M PE
see c.
3
c. Shield of a VFD shielded cable: Ground the
shield 360° under drive's grounding clamp,
then twist with the ground conductors and
connect under the drive's ground terminal.
Ground the shield also 360° at the motor end,
then twist and connect under the motor's
d
ground terminal. For a conduit installation
see b.
d. Symmetrically constructed grounding
3
conductors inside a VFD shielded cable:
Twist together, combine with the shield and
connect under the drive's ground terminal
and under the motor's ground terminal. For a
conduit installation see a.
d
e. External brake resistor connection (if used):
V1
For a conduit installation see a and b. For a
W1
M PE VFD cable installation see c and d. In
addition, cut the third phase conductor
3
which is not needed for the brake resistor
connection.
f. If necessary, install an external filter (du/dt,
common mode, or sine filter). Filters are
available from ABB.
U1
M
V1
3~
ohm
W1
PE
U1-PE, V1-PE, W1-PE
Grounding clamps
4