ABB ACS880-77CC, Hardware Manual

Page: 62 / 128

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Generator stator and generator cable
Check the insulation of the generator stator and cable as follows:
• Check that all cables are disconnected from the converter output terminals U2, V2 and
W2.
• Measure the insulation resistance between each phase conductor and the protective
ground conductor using a measuring voltage of 1000 V DC. The insulation resistance
of an ABB generator must exceed 100 Mohm (reference value at 25 °C (77 °F)). For
the insulation resistance of other generators, please consult the manufacturer’s
instructions.
•
Note: Make sure that there is no condensed moisture inside the generator casing. If
you suspect that there is moisture, dry the generator before measurement.
•
Note: When using permanent magnet generator, it must be stable at the time of the
measurement.
„
„
ohm
G
3~
U1
V1
W1 PE
Connecting the grid cables
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Connection diagram
„
„
U<
PE
L1
L2
L3
PE
62 Electrical installation