Danfoss VLT Refrigeration Drive FC 103 Operating Instructions Manual page 98

Low harmonic drive
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Specifications
Power Ranges (LHD with AF)
Response time
Settling time - reactive current control
Settling time - harmonic current control (filtering)
Overshoot - reactive current control
Overshoot - harmonic current control
Grid conditions
Supply voltage
Mains voltage low/mains drop-out:
During low mains voltage or a mains drop-out, the filter continues until the DC-link voltage drops below the minimum stop level,
which corresponds to 15% below the filter lowest rated supply voltage. Full compensation cannot be expected at mains voltage
lower than 10% below the filter lowest rated supply voltage. If mains 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 main voltages exceed 580 V.
Supply frequency
Maximum imbalance temporary between mains
phases where mitigation performance is kept high.
Maximum THDv pre-distortion
8
8
Harmonic mitigation performance
THDi
Individual harmonic mitigation ability:
nd
2
th
4
th
5
7
th
th
8
th
10
th
11
th
13
14
th
16
th
th
17
th
19
th
20
22
nd
23
rd
th
25
Total current of harmonics
The filter is performance tested to the 40
Reactive current compensation
Cos phi
Cos phi
Reactive current, % of filter current rating
94
®
VLT
Refrigeration Drive FC 103 Low Harmonic Drive
Filter mitigates at higher mains imbalance but harmonic mitigation
th
order
Danfoss A/S © 08/2015 All rights reserved.
3.0% of rated supply voltage
10% with kept mitigation performance
Reduced performance for higher pre-distortion levels
Depending on filter vs. distortion ratio.
Current maximum RMS [% of rated RMS current]
Lagging and leading, depending on parameter settings
Controllable 1.0 to 0.5 lagging
<0.5 ms
<40 ms
<20 ms
<20%
<10%
380–480 V, +5%/-10%
50/60 Hz ±5%
performance is reduced
Best performance <4%
10%
10%
70%
50%
10%
5%
32%
28%
4%
4%
20%
18%
3%
3%
16%
14%
90%
100%
MG16N102

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