Danfoss VLT AAF00x, Инструкция по эксплуатации

Страница: 104 / 117

8 General Specifications
8.1 Electrical Data
8.1.1 Power Rating
Grid conditions:
Supply voltage
380–480V
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 typically 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 will not cut out
until AC line voltages exceed 580V.
Supply frequency 50/60Hz ±5%
Max. imbalance temporary between line phases
where mitigation performance is kept high.
3.0% of rated supply voltage
The filter will mitigate 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: % of filter current rating
5th 70%
7th 50%
11th 32%
13th 28%
17th 20%
19th 18%
23rd 16%
25th 14%
Total current of harmonics 90%
Reactive Current Compensation:
Cos phi
Controllable 1.0 to 0.5 lagging
Reactive current, % of filter current rating 100%
Cable lengths and cross-sections:
Max grid cable length
Unlimited (determined by voltage drop)
Maximum cross-section to control terminals, rigid wire 1.5mm
2
/16 AWG (2 x 0.75 mm
2
Maximum cross-section to control terminals, flexible cable 1mm 2 /18 AWG
Maximum cross-section to control terminals, cable with enclosed core 0.5mm
2
/20 AWG
Minimum cross-section to control terminals 0.25mm 2
CT terminals specification:
Necessary CT number
3 (one for each phase)
AAF's burden equals 2m
Ω
Secondary current rating 1A or 5A (hardware set-up)
Accuracy Class 0.5 or better
General Specifications VLT Active Filter AAF 00x
MG.90.V2.22 - VLT
®
is a registered Danfoss trademark 8-1
8 8