Electrical installation
92
Note:
Moisture inside the motor casing will reduce the insulation resistance. If
moisture is suspected, dry the motor and repeat the measurement.
Braking resistor assembly
Check the insulation of the braking resistor assembly (if present) as follows:
1. Check that the resistor cable is connected to the resistor, and disconnected from
the drive output terminals R+ and R-.
2. At the drive end, connect the R+ and R- conductors of the resistor cable together.
Measure the insulation resistance between the combined conductors and the PE
conductor by using a measuring voltage of 1 kV DC. The insulation resistance
must be higher than 1 Mohm.
Checking the compatibility with IT (ungrounded) and corner grounded TN
systems
EMC E202 is not suitable for use in an IT (ungrounded) system. If the drive is
equipped with EMC E202, disconnect the filter before connecting the drive to
the supply network. For detailed instructions on how to do this, please contact your
local ABB representative.
WARNING!
If a drive with EMC E202 is installed on an IT system (an
ungrounded power system or a high resistance-grounded [over 30 ohm] power
system), the system will be connected to earth potential through the EMC filter
capacitors of the drive. This may cause danger, or damage the unit.
ohm
M
3~
U1
V1
W1 PE
ohm
ohm
R-
R+
PE
Содержание ACS800-17LC
Страница 1: ...ABB industrial drives Hardware manual ACS800 17LC Drives 55 to 5200 kW ...
Страница 4: ......
Страница 10: ...Update notice 6 ...
Страница 18: ...Table of contents 12 ...
Страница 26: ...Safety instructions 20 ...
Страница 32: ...Introduction to the manual 26 ...
Страница 60: ...Hardware description 54 ...
Страница 74: ...Mechanical installation 68 ...
Страница 114: ...Electrical installation 108 ...
Страница 142: ...Maintenance 136 ...
Страница 150: ...Internal cooling circuit 144 ...
Страница 179: ...Dimensions 173 Frame sizes R7i R7i and R8i R8i bottom entry exit ...
Страница 180: ...Dimensions 174 Frame sizes R7i R7i and R8i R8i marine units C121 ...
Страница 182: ...www abb com drives www abb com drivespartners Contact us 3AUA0000065339 Rev B EN 2016 06 07 ...