ABB ACH580-01 Series Panduan Instalasi dan Start-Up Cepat - Halaman 4

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ABB ACH580-01 Series Panduan Instalasi dan Start-Up Cepat
9. 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) without any modifications to
the built-in EMC filter or varistors. If you install the drive to a different system, reconfigure the EMC and VAR screws as
shown in the table below. The table also shows the optional modifications available
Frame
Connection
TN System
size
NEC
(B066)
Default
R1...R3
EMC (DC)
None or plastic Metal
VAR
Metal
1)
Metal screw must not be used.
2)
Optional, for better noise filtering.
3)
NEC (UL) drives (+B066) have these screws installed by default.
4)
IEC drives (+B063) have these screws installed by default.
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.
TN System
Corner-grounded delta
IEC
and Midpoint-grounded
(B063)
delta system
3)
4)
Default
2)
None or plastic
Metal
None or plastic
.
IT system
1)
1)
None or plastic
1)
None or plastic
ohm
U1-PE, V1-PE, W1-PE
4
TT system
1)
None or plastic
1)
None or plastic
U1
M
V1
3~
W1
PE