11.4.1 Power Rating
Grid conditions
Supply voltage
380–480 V
AC line voltage low/line drop-out:
During low AC line voltage or a line drop-out, the filter continues until the intermediate circuit voltage drops below the
minimum stop level, which corresponds to 15% below the filter lowest rated supply voltage. Full compensation cannot be
expected at AC line voltage lower than 10% below the filter lowest rated supply voltage. If AC line voltage exceeds the filter
highest rated voltage, the filter continues to work but harmonic mitigation performance is reduced. The filter does not cut out
until AC line voltages exceed 580 V.
Supply frequency
50/60 Hz ±5%
Max. imbalance temporary between line phases
where mitigation performance is kept high.
3.0% of rated supply voltage
Filter mitigates at higher line imbalance but harmonic mitigation
performance is reduced
Max THDv pre-distortion
10% with kept mitigation performance
Reduced performance for higher pre-distortion levels
Harmonic mitigation performance
THiD
Best performance <4%
Depending on filter vs. distortion ratio.
Individual harmonic mitigation ability:
Current maximum RMS [% of rated RMS current]
2nd
10%
4th
10%
5th
70%
7th
50%
8th
10%
10th
5%
11th
32%
13th
28%
14th
4%
16th
4%
17th
20%
19th
18%
20th
3%
22nd
3%
23rd
16%
25th
14%
Total current of harmonics
90%
The filter is performance tested to the 40th order
Reactive current compensation
Cos phi
Controllable 1.0 to 0.5 lagging
Reactive current, % of filter current rating
100%
Specifications
Instruction Manual
MG37A222
Danfoss A/S © Rev. 2014-02-07 All rights reserved.
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Summary of Contents for VLT AutomationDrive FC 302
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