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72 Guidelines for planning the electrical installation
Using power factor compensation capacitors with the
drive
Power factor compensation is not needed with AC drives. However, if a drive is to be
connected in a system with compensation capacitors installed, note the following
restrictions.
WARNING!
Do not connect power factor compensation capacitors or harmonic
filters to the motor cables (between the drive and the motor). They are not
meant to be used with AC drives and can cause permanent damage to the drive
or themselves.
If there are power factor compensation capacitors in parallel with the three phase input of
the drive:
1. Do not connect a high-power capacitor to the power line while the drive is connected.
The connection will cause voltage transients that may trip or even damage the drive.
2. If capacitor load is increased/decreased step by step when the AC drive is connected
to the power line, ensure that the connection steps are low enough not to cause
voltage transients that would trip the drive.
3. Check that the power factor compensation unit is suitable for use in systems with AC
drives, ie, harmonic generating loads. In such systems, the compensation unit should
typically be equipped with a blocking reactor or harmonic filter.
Implementing a safety switch between the drive and the
motor
We recommended that you install a safety switch between the permanent magnet motor
and the drive output. The switch is needed to isolate the motor during any maintenance
work on the drive.
Summary of Contents for ACS880-34
Page 1: ... ABB INDUSTRIAL DRIVES ACS880 34 drive modules 132 to 400 kW 200 to 450 hp Hardware manual ...
Page 4: ......
Page 14: ...14 ...
Page 22: ...22 Safety instructions ...
Page 28: ...28 Introduction to the manual ...
Page 42: ...42 Operation principle and hardware description ...
Page 118: ...118 External control unit ...
Page 140: ...140 Installation example with full cabling panels option H381 M8 16 Hex 2 5 4 3 1 1 1 1 2 6 7 ...
Page 152: ...152 Installation checklist ...
Page 156: ...156 Start up ...
Page 158: ...158 Fault tracing ...
Page 174: ...174 Maintenance ...
Page 202: ...202 Technical data EU Declaration of Conformity Machinery Directive ...
Page 204: ...204 Technical data ...
Page 206: ...206 Dimension drawings Standard configuration 3AXD50000038012 ...
Page 208: ...208 Dimension drawings Drive module with options 0B051 H356 0H371 3AXD50000038012 ...
Page 209: ...Dimension drawings 209 Configuration with option H381 3AXD50000323210 ...
Page 210: ...210 Dimension drawings LCL filter module 3AXD50000206162 ...
Page 214: ...214 Dimension drawings External control unit 3axd50000011687 ...
Page 238: ...238 Resistor braking ...
Page 242: ...242 du dt and sine filters ...
Page 256: ...Contact us www abb com drives www abb com drivespartners 3AXD50000035191 Rev B EN 2018 09 28 ...