Checking The Insulation Of The Assembly; Measuring The Insulation Of The Drive; Measuring The Insulation Of The Input Power Cable; Compatibility Check - It (Ungrounded) Earthing System - ABB ACS880-207 Hardware Manual

48 Electrical installation

Checking the insulation of the assembly

Measuring the insulation of the drive

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WARNING!
Do not do any voltage withstand or insulation resistance tests on any part of the
drive as testing can damage the drive. Every drive has been tested for insulation
between the main circuit and the chassis at the factory. Also, there are
voltage-limiting circuits inside the drive which cut down the testing voltage
automatically.

Measuring the insulation of the input power cable

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Before you connect the input power cable to the drive, measure its insulation according to
local regulations.

Compatibility check - IT (ungrounded) earthing system

Drives with a category 2, 1st environment EMC filter (option +E202) are not suitable for use
in an IT (ungrounded) supply network system. If the drive is equipped with option +E202,
disconnect the filter before connecting the drive to the IT supply network. Contact ABB for
instructions.
WARNING!
Do not install a drive equipped with EMC filter +E202 on an IT system (an
ungrounded power system or a high-resistance-grounded [over 30 ohms] power
system). The system will be connected to ground potential through the EMC filter
capacitors of the drive. This can cause danger, or damage the drive.

Connecting the input power cables

Connection diagram (frame 1×R8i, limited scope version)
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1)
3)
2)
Components
for charging
circuit
ICU cubicle
LCL filter IGBT supply
module
ISU cubicle