WARNING
HIGH VOLTAGE
Filters contain high voltage when connected to AC mains
input. Failure to perform installation, start-up, and
maintenance by qualified personnel can result in death
or serious injury.
•
Only qualified personnel must perform instal-
lation, start-up, and maintenance.
•
Never work on a filter in operation.
WARNING
DISCHARGE TIME
The VLT
®
Advanced Harmonic Filters AHF 005/AHF 010
contain capacitors. The capacitors can remain charged
even when the filter is not powered. Failure to wait the
specified time after power has been removed before
performing service or repair work can result in death or
serious injury.
1.
Stop the frequency converter and the motor.
2.
Disconnect AC mains, permanent magnet type
motors, remote DC-link supplies including
battery back-ups, UPS, and DC-link connections
to other frequency converters.
3.
Wait the required time specified on the
nameplate, ensuring that the capacitors are
discharged fully, before performing any service
or repair work on the filter.
4.
Before performing any service or repair work on
the filter, ensure that the voltage is 0 between
the filter terminals X3.1, X3.2, and X3.3, and
between the filter terminals X4.1, X4.2, and
X4.3.
CAUTION
ELECTRICAL HAZARD
When measuring on live filters, observe the valid
national regulations for the prevention of accidents (for
example VBG 4).
The electrical installation must be carried out according
to the appropriate regulations (for example cable cross-
sections, fuses, and PE connection). When using the
filters with frequency converters without safe separation
from the supply line (to VDE 0100), include all control
wiring in further protective measures (for example
double insulated or shielded, grounded, and insulated).
CAUTION
HOT SURFACE
When in use, the filter surface becomes hot.
•
Do NOT touch the filter during operation.
CAUTION
OVERTEMPERATURE
Overtemperature damages the filter chokes. To prevent
overtemperature:
•
Use temperature switches, see
chapter 4.2.3 Overtemperature Protection
•
Perform an immediate stop or a controlled
ramp down within 30 s.
CAUTION
PROTECTIVE DEVICES
Equip systems where filters are installed with extra
monitoring and protective devices according to the valid
safety regulations, for example rules on technical tools
and regulations for the prevention of accidents.
CAUTION
Non-authorized removal of required cover, inappropriate
use, incorrect installation, or operation create the risk of
severe injury to persons or damage to material assets.
•
To avoid the risk, only let authorized and
qualified personnel handle the VLT
®
Advanced
Harmonic Filter AHF 005/AHF 010.
NOTICE
The filters shown in this design guide are specially
designed and tested for operation with Danfoss
frequency converters, see
Danfoss takes no responsibility for the use of the filters
with third-party frequency converters.
NOTICE
REPAIR OF FILTER
Only Danfoss authorized, qualified personnel are allowed
to repair the VLT
®
Advanced Harmonic Filter AHF
005/AHF 010. See
for more details.
NOTICE
Commissioning is only allowed when there is compliance
with the EMC Directive 2014/30/EU.
The filters meet the requirements of the Low Voltage
Directive 2014/35/EU.
Introduction
Design Guide
MG80C602
Danfoss A/S © 05/2019 All rights reserved.
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Summary of Contents for AHF 010
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