Danfoss VLT AHF 005

Fan concept IP20
The IP20 versions of the VLT
®
Advanced Harmonic Filters
AHF 005/AHF 010 use fans for cooling. The fans are
supplied from mains supply and are mounted as either
internal or external built-in fans.
The 690 V AHF lters are available in an extended input
voltage range of 500–690 V, which requires a special fan.
This fan has a built-in fan control circuitry matching the
input voltage range. When mounting 690 V lters, observe
the larger mechanical dimensions, see
chapter 7.2.7 Mechanical Dimensions for further details.
There are 4 dierent fan types, see Illustration 4.4 to
Illustration 4.7:
•
Internal fan type 1: Standard fan mounted inside
the lter enclosure.
•
External fan type 1: Standard fan mounted
outside the lter enclosure.
•
Internal fan type 2: Special fan mounted inside
the lter enclosure. The fan supply circuitry is
outside the enclosure. For 690 V only.
•
External fan type 2: Special fan mounted outside
the
lter enclosure. The complete fan unit is
outside the lter enclosure. For 690 V only.
130BE606.10
Illustration 4.4 Fan Concept, Internal Fan 1
130BE607.10
Illustration 4.5 Fan Concept, Internal Fan 2
130BE608.10
Illustration 4.6 Fan Concept, External Fan 1
130BE609.10
Illustration 4.7 Fan Concept, External Fan 2
Requirements for Installati...
VLT
®
Advanced Harmonic Filter AHF 005/AHF 010
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