AHF 005/010
All about VLT 8000
AQUA
■
Typical installation in a panel or other enclosures
To avoid high frequency noise coupling, keep a
minimum distance of 5.91 in. (150 mm) to:
a) AC line/supply wires
b) motor wires of adjustable frequency drive
c) control and signal wires (voltage range < 48 V)
To obtain low resistive HF connections, grounding,
shielding, and other metallic connections (e. g.
mounting plates, mounted units) should have a
surface as large as possible to metallic ground.
Use grounding and potential equalization wires with
as large a cross-section as possible (min. 0.015
in.² /10mm²) or thick grounding tapes.
Use copper or tinned copper shielded wires only, as
steel shielded wires are not suitable for high frequency
applications. Connect the shield with metal clamps or
metal glands to the equalization bars or PE connections.
Inductive switching units (relay, magnetic contactor,
etc.) must always be equipped with varistors,
RC circuits, or suppressor diodes.
1. Panel
2. Line supply wire
3. Motor wiring
4. Control wiring
5. Wiring between harmonic filter and adjustable
frequency drive
6. Lines supply wire of filter module
7. Mounting plate (common star point)
8. Potential equalization
9. Filter module AHF 0xx
10. Line connection
11. PLC
12. Adjustable frequency drive
13. Line fuses
14. Line circuit breaker
MG.80.B4.22 - VLT is a registered Danfoss trademark
19
