Danfoss VLT AHF005, VLT AHF010 Design Manual

MAKING MODERN LIVING POSSIBLE

Design Guide

AHF005/010

Contents

1 How to Read this Design Guide

3

2 Safety and Conformity

4

2.1.2 Abbreviations 4

2.1.3 CE Conformity and Labelling 4

2.1.4 EMC-Directive 2004/108/EG 5

2.1.5 Warnings 5

3 Introduction to Harmonics and Mitigation

7

3.1 What are Harmonics?

7

3.1.1 Linear Loads 7

3.1.2 Non-linear Loads 8

3.1.3 The Effect of Harmonics in a Power Distribution System 9

3.2 Harmonic Limitation Standards and Requirements

9

3.3 Harmonic Mitigation

11

4 Introduction to Advanced Harmonic Filters

12

4.1 Operation Principle

12

4.1.1 Power Factor 13

4.1.2 Capacitor Disconnect 14

5 Selection of Advanced Harmonic Filter

15

5.1 How to Select the Correct AHF

15

5.1.1 Calculation of the Correct Filter Size Needed 15

5.1.2 Calculation Example 15

5.1.3 Voltage Boost 15

5.2 Electrical Data

16

5.2.1 Accessories 26

5.3 General Specification

27

5.3.1 General Technical Data 27

5.3.2 Environmental Data 27

6 How to Install

29

6.1 Mechanical Mounting

29

6.1.1 Safety Requirements of Mechanical Installation 29

6.1.2 Mounting 29

6.1.3 Recommendations for Installation in Industrial Enclosures 29

6.1.4 Ventilation 29

6.2 Electrical Installation

32

6.2.1 Over Temperature Protection 32

6.2.2 Capacitor Disconnect 33

Contents AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 1

6.2.3 Wiring 34

6.2.4 Fuses 36

6.3 Mechanical Dimensions

37

6.3.1 Sketches 37

6.3.2 IP00 Enclosures 47

6.3.3 Physical Dimensions 54

6.3.4 IP00 Dimensions 54

6.3.5 Weight 55

7 How to Programme the Frequency Converter

56

7.1.1 DC-link Compensation Disabling 56

Index

57

Contents AHF005/010 Design Guide

2 MG.80.C4.02 - VLT® is a registered Danfoss trademark

1 How to Read this Design Guide

This Design Guide will introduce all aspects of the Advanced
Harmonic Filters for your VLT® FC Series Drive. It describes
Harmonics and how to mitigate them, provide installation
instructions and guidance about how to programme the
frequency converter.

Danfoss technical literature is also available online at

www.danfoss.com/BusinessAreas/DrivesSolutions/Documen­tations/Technical+Documentation.

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1 1

2 Safety and Conformity

2.1.1 Symbols

Symbols used in this manual

NOTE

Indicates something to be noted by the reader.

CAUTION

Indicates a general warning.

WARNING

Indicates a high-voltage warning.

✮

Indicates default setting

2.1.2 Abbreviations

Active Power P
Advanced Harmonic Filter AHF
Alternating current AC
American wire gauge AWG
Ampere/AMP A
Apparent Power S
Degrees Celsius

°C
Direct current DC
Displacement Power Factor DPF
Electro Magnetic Compatibility EMC
Drive FC
Gram g
Harmonic Calculation Software HCS
Hertz Hz
Kilohertz kHz
Local Control Panel LCP
Meter m
Millihenry Inductance mH
Milliampere mA
Millisecond ms
Minute min
Motion Control Tool MCT
Nanofarad nF
Newton Meters Nm
Nominal motor current I

M,N

Nominal motor frequency f

M,N

Nominal motor power P

M,N

Nominal motor voltage U

M,N

Parameter par.
Partial Weighted Harmonic
Distortion

PWHD

Point of Common Coupling PCC
Power Factor PF
Protective Extra Low Voltage PELV
Rated Inverter Output Current I

INV

Reactive Power Q
Revolutions Per Minute RPM
Second sec.
Short circuit ratio R

SCE

Total Demand Distortion TDD
Total Harmonic Distortion THD
Total Harmonic Current Distortior THiD
Total Harmonic Voltage Distortior THvD
True Power Factor TPF
Volts V
I

VLT,MAX

The maximum output current.

I

VLT,N

The rated output current
supplied by the frequency
converter.

Equipment containing electrical components
may not be disposed of together with domestic
waste.
It must be separately collected with electrical
and electronic waste according to local and
currently valid legislation.

AHF005/010

Design Guide

2.1.3 CE Conformity and Labelling

What is CE Conformity and Labelling?
The purpose of CE labelling is to avoid technical trade
obstacles within EFTA and the EU. The EU has introduced the
CE label as a simple way of showing whether a product
complies with the relevant EU directives. The CE label says
nothing about the specifications or quality of the product.
The low-voltage directive (73/23/EEC)
Frequency converters must be CE labelled in accordance
with the low-voltage directive of January 1, 1997. The
directive applies to all electrical equipment and appliances
used in the 50 - 1000V AC and the 75 - 1500V DC voltage
ranges. Danfoss CE-labels in accordance with the directive
and issues a declaration of conformity upon request.

Safety and Conformity AHF005/010 Design Guide

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22

2.1.4 EMC-Directive 2004/108/EG

The Danfoss frequency converters comply with the
requirements of the EMC -Directive. The AHF are inherently
benign equipment, that means that they do not produce
electromagnetic disturbances, consisting only of passive
components. Therefore, AHF are not within the scope of the
EMC-directive. Though, the Danfoss frequency converters in
combination with AHF will observe the requirements of the
EMC-Directive.

2.1.5 Warnings

WARNING

Improper installation of the filter or the frequency converter
may cause equipment failure, serious injury or death. Follow
this Design Guide and install according to National and Local
Electrical Codes.

WARNING

Never work on a filter in operation. Touching the electrical
parts may be fatal - even after the equipment has been
disconnected from the drive or motor.

WARNING

Before disconnecting the filter, wait at least the voltage
discharge time stated in the Design Guide for the
corresponding frequency converter to avoid electrical shock
hazard.

CAUTION

When in use the filter surface temperature rises. DO NOT
touch filter during operation.

CAUTION

To prevent resonances in the DC-link, it is recommended to
disable the dynamic DC-link compensation by setting

14-51 DC Link Compensation to OFF. See chapter 7 How to
Programme the Frequency Converter.

CAUTION

Temperature contactor must be used to prevent damage of
the filter chokes caused by over temperature. An immediate
stop or a controlled ramp down within 30 sec. has to be
performed to prevent damage of the filter chokes.

NOTE

Never attempt to repair a defect filter.

NOTE

The filters represented in this Design Guide are specially
designed and tested for operation with Danfoss frequency
converters (FC 102/202/301 and 302). Danfoss takes no
responsibility for the use of the filters with third party
frequency converters.

WARNING

Non - authorized removal of required cover, inappropriate
use, incorrect installation or operation, creates the risk of
severe injury to persons or damage to material assets.

CAUTION

All operations concerning transport, installation and
commissioning as well as maintenance must be carried out
by qualified, skilled personnel (IEC 60364 and CENELEC HD
384 or IEC 60364 and IEC-Report 664 or DIN VDE 0110.
National regulations for the prevention of accidents must be
observed).

NOTE

According to this basic safety information qualified skilled
personnel are persons who are familiar with the assembly,
commissioning and operation of the product and who have
the qualifications necessary for their occupation.

NOTE

The filters are components, that are designed for installation
in electrical systems or machinery.
When installing in machines, commissioning of the filters (i.e.
the starting of operation as directed) is prohibited until it is
proven, that the machine corresponds to the regulations of
the EC Directive 83/392/EEC (Machinery Directive); EN 60204
must be observed.

NOTE

Commissioning (i.e. starting operation as directed) is only
allowed when there is compliance with the EMC-Directive
89/336/EEC.
The filters meet the requirements of the Low-Voltage
Directive 73/23/EEC. The technical data and information on
the connection conditions must be obtained from the
nameplate and the documentation and must be observed in
all cases.

NOTE

The filter must be protected from inappropriate loads. In
particular; during transport and handling: Components are
not allowed to be bent. Distance between isolation must not
be altered. Touching of electronic components and contacts
must be avoided.

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2 2

NOTE

When measuring on live filters, the valid national regulations
for the prevention of accidents (e.g. VBG 4) must be
observed.
The electrical installation must be carried out according to
the appropriate regulations (e.g. cable cross-sections, fuses,
PE-connection). When using the filters with frequency
converters without safe separation from the supply line (to
VDE 0100) all control wiring has to be included in further
protective measures (e.g. double insulated or shielded,
grounded and insulated).

NOTE

Systems where filters are installed, if applicable, have to be
equipped with additional monitoring and protective devices
according to the valid safety regulations e.g. law on technical
tools, regulations for the prevention of accidents, etc.

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3 Introduction to Harmonics and Mitigation

3.1 What are Harmonics?

3.1.1 Linear Loads

On a sinusoidal AC supply a purely resistive loads (for
example an incandescent light bulb) will draw a sinusoidal
current, in phase with the supply voltage.

The power dissipated by the load is:

P=U×I

For reactive loads (such as an induction motor) the current
will no longer be in phase with the voltage, but will lag the
voltage creating a lagging true power factor with a value less
than 1. In the case of capacitive loads the current is in
advance of the voltage, creating a leading true power factor
with a value less than 1.

In this case, the AC power has three components: real power
(P), reactive power (Q) and apparent power (S). The apparent
power is:

S=U×I

(where S=[kVA], P=[kW] and Q=[kVAR])

In the case of a perfectly sinusoidal waveform P, Q and S can
be expressed as vectors that form a triangle:

S

2

=

P

2

+

Q

2

P

S

Q

φ

130BB538.10

The displacement angle between current and voltage is φ.
The displacement power factor is the ratio between the
active power (P) and apparent power (S):

DPF

=

P
S

=

cos

(ϕ)

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3

3

3.1.2 Non-linear Loads

Non-linear loads (such as diode rectifiers) draw a non-sinusoidal current. The figure below shows the current drawn by a 6-pulse
rectifier on a three phase supply.

A non-sinusoidal waveform can be decomposed in a sum of sinusoidal waveforms with periods equal to integer multiples of the
fundamental waveform.

f(t

) = ∑

a

h

×

sin(h

ω

1

t

)

See following illustrations.

1

1 2 3 4 5 6 7

0.

0

0

-

-

1

1 2 3 4 5 6 7

0.

0

0

-

-

130BB539.10

The integer multiples of the fundamental frequency ω1 are
called harmonics. The RMS value of a non-sinusoidal
waveform (current or voltage) is expressed as:

I

RMS

= ∑

h

=1

h

max

I

(h)

2

The amount of harmonics in a waveform gives the distortion
factor, or total harmonic distortion (THD), represented by the
ratio of RMS of the harmonic content to the RMS value of the
fundamental quantity, expressed as a percentage of the
fundamental:

THD

= ∑

h

=2

h

max

(

I

h

I

1

)

2

× 100 %

Using the THD, the relationship between the RMS current
I

RMS

and the fundamental current I1 can be expressed as:

I

RMS

=

I

1

× 1 +

THD

2

The same applies for voltage.

The true power factor PF (λ) is:

PF

=

P
S

In a linear system the true power factor is equal to the
displacement power factor:

PF=DPF=cos

(ϕ)

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In non-linear systems the relationship between true power
factor and displacement power factor is:

PF

=

DPF

1 +

THD

2

The power factor is decreased by reactive power and
harmonic loads. Low power factor results in a high RMS
current that produces higher losses in the supply cables and
transformers.

In the power quality context, the total demand distortion
(TDD) term is often encountered. The TDD does not charac­terize the load, but it is a system parameter. TDD expresses
the current harmonic distortion in percentage of the
maximum demand current IL.

TDD

= ∑

h

=2

h

max

(

I

h

I

L

)

2

× 100 %

Another term often encountered in literature is the partial
weighted harmonic distortion (PWHD). PWHD represents a
weighted harmonic distortion that contains only the
harmonics between the 14th and the 40th, as shown in the
following definition.

PWHD

= ∑

h

=14

40

(

I

h

I

1

)

2

× 100 %

3.1.3

The Effect of Harmonics in a Power
Distribution System

In Illustration 3.1 a transformer is connected on the primary
side to a point of common coupling PCC1, on the medium
voltage supply. The transformer has an impedance Z

xfr

and
feeds a number of loads. The point of common coupling
where all loads are connected together is PCC2. Each load is
connected through cables that have an impedance Z1, Z2,
Z3.

Illustration 3.1 Small Distribution System

Harmonic currents drawn by non-linear loads cause
distortion of the voltage because of the voltage drop on the
impedances of the distribution system. Higher impedances
result in higher levels of voltage distortion.

Current distortion relates to apparatus performance and it
relates to the individual load. Voltage distortion relates to
system performance. It is not possible to determine the
voltage distortion in the PCC knowing only the load’s
harmonic performance. In order to predict the distortion in
the PCC the configuration of the distribution system and
relevant impedances must be known.

A commonly used term for describing the impedance of a
grid is the short circuit ratio R

sce

, defined as the ratio
between the short circuit apparent power of the supply at
the PCC (Ssc) and the rated apparent power of the load
(S

equ

).

R

sce

=

S

ce

S

equ

where

S

sc

=

U

2

Z

supply

and

S

equ

=U×

I

equ

The negative effect of harmonics is twofold

•

Harmonic currents contribute to system losses (in
cabling, transformer)

•

Harmonic voltage distortion causes disturbance to
other loads and increase losses in other loads

Non-linear

Current Voltage

System

Impedance

Disturbance to

other users

Contribution to

system losses

130BB541.10

3.2

Harmonic Limitation Standards and
Requirements

The requirements for harmonic limitation can be:

•

Application specific requirements

•

Requirements from standards that have to be
observed

The application specific requirements are related to a specific
installation where there are technical reasons for limiting the
harmonics.

For example on a 250kVA transformer with two 110kW
motors connected. One is connected direct on-line and the
other one is supplied through a frequency converter. If the

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3

3

direct on-line motor should also be supplied through a
frequency converter the transformer will, in this case, be
undersized. In order to retrofit, without changing the
transformer, the harmonic distortion from the two frequency
converterhas to be mitigated using AHF filters.

There are various harmonic mitigation standards, regulations
and recommendations. Different standards apply in different
geographical areas and industries. The following
encountered standards will be presented:

•

IEC/EN 61000-3-2

•

IEC/EN 61000-3-12

•

IEC/EN 61000-3-4

•

IEC 61000-2-2

•

IEC61000-2-4

•

IEEE 519

•

G5/4

IEC 61000-3-2, Limits for harmonic current emissions
(equipment input current ≤ 16A per phase)
The scope of IEC 61000-3-2 is equipment connected to the
public low-voltage distribution system having an input
current up to and including 16 A per phase. Four emission
classes are defined: Class A through D. The Danfoss
frequency converters are in Class A. However, there are no
limits for professional equipment with a total rated power
greater than 1kW.

IEC 61000-3-12, Limits for harmonic currents produced by
equipment connected to public low-voltage systems with
input current >16A and ≤75A
The scope of IEC 61000-3-12 is equipment connected to the
public low-voltage distribution system having an input
current between 16A and 75A. The emission limits are
currently only for 230/400V 50Hz systems and limits for other
systems will be added in the future. The emission limits that
apply for drives are given in Table 4 in the standard. There
are requirements for individual harmonics (5th, 7th, 11th,
and 13th) and for THD and PWHD. Frequency converters
from the Automation Drive series (FC 102 HVAC, FC 202
Aqua and FC 302 Industry) comply with these limits without
additional filtering.

IEC 61000-3-4, Limits, Limitation of emission of harmonic
currents in low-voltage power supply systems for equipment
with rated current greater than 16A
IEC 61000-3-12 supersedes IEC 61000-3-4 for currents up to
75A. Therefore the scope of IEC 61000-3-4 is equipment with
rated current greater than 75A connected to the public low­voltage distribution system. It has the status of Technical
report and should not be seen as an international standard. A
three-stage assessment procedure is described for the
connection of equipment to the public supply and
equipment above 75A is limited to stage 3 connection based
on the load's agreed power. The supply authority may accept
the connection of the equipment on the basis of the agreed

active power of the load's installation and local requirements
of the power supply authority apply. The manufacturer shall
provide individual harmonics and the values for THD and
PWHD.

IEC 61000-2-2 and IEC 61000-2-4 Compatibility levels for low­frequency conducted disturbances
IEC 61000-2-2 and IEC 61000-2-4 are standards that stipulate
compatibility levels for low-frequency conducted distur­bances in public low-voltage supply systems (IEC 61000-2-2)
and industrial plants (IEC 61000-2-4). These low-frequency
disturbances include but are not limited to harmonics. The
values prescribed in these standards shall be taken into
consideration when planning installations. In some
situations the harmonic compatibility levels can not be
observed in installations with frequency converters and
harmonic mitigation is needed.

IEEE519, IEEE recommended practices and requirements for
harmonic control in electrical power systems
IEEE519 establishes goals for the design of electrical systems
that include both linear and nonlinear loads. Waveform
distortion goals are established and the interface between
sources and loads is described as point of common coupling
(PCC).

IEEE519 is a system standard that aims the control of the
voltage distortion at the PCC to a THD of 5% and limits the
maximum individual frequency voltage harmonic to 3%. The
development of harmonic current limits aims the limitation
of harmonic injection from individual customers so they will
not cause unacceptable voltage distortion levels and the
limitation of the overall harmonic distortion of the system
voltage supplied by the utility.

The current distortion limits are given in Table 10.3 in the
standard and depend on the ratio ISC/IL where ISC is the short
circuit current at the utility PCC and IL is the maximum
demand load current. The limits are given for individual
harmonics up to the 35th and total demand distortion (TDD).
Please note that these limits apply at the PCC to the utility.
While requiring individual loads to comply with these limits
also ensures the compliance at the PCC, this is rarely the
most economic solution, being unnecessarily expensive. The
most effective way to meet the harmonic distortion
requirements is to mitigate at the individual loads and
measure at the PCC.

However, if in a specific application it is required that the
individual drive should comply with the IEEE519 current
distortion limits, an AHF can be employed to meet these
limits.

G5/4, Engineering recommendation, planning levels for
harmonic voltage distortion and the connection of non­linear equipment to transmission systems and distribution
networks in the United Kingdom
G5/4 sets planning levels for harmonic voltage distortion to
be used in the process of connecting non-linear equipment.
A process for establishing individual customer emission

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limits based on these planning levels is described. G5/4 is a
system level standard.

For 400V the voltage THD planning level is 5% at the PCC.
Limits for odd and even harmonics in 400V systems are given
in Table 2 in the standard. An assessment procedure for the
connection of non-linear equipment is described. The
procedure follows three stages, aiming to balance the level
of detail required by the assessment process with the degree
of risk that the connection of particular equipment will result
in unacceptable voltage harmonic distortion.

Compliance of a system containing VLT® frequency
converters depends on the specific topology and population
of non-linear loads. AHF can be employed to meet the
requirements of G5/4.

3.3 Harmonic Mitigation

To mitigate the harmonics caused by the frequency
converter 6-pulse recitifier several solutions exist and they all
have their advantages and disadvantages. The choice of the
right solution depends on several factors:

•

The grid (background distortion, mains unbalance,
resonance and type of supply - transformer/
generator)

•

Application (load profile, number of loads and load
size)

•

Local/national requirements/regulations (IEEE519,
IEC, G5/4, etc.)

•

Total cost of ownership (initial cost, efficiency,
maintenance, etc.)

IEC standards are harmonized by various countries or supra­national organizations. All above mentioned IEC standards
are harmonized in the European Union with the prefix “EN”.
For example the European EN 61000-3-2 is the same as IEC
61000-3-2. The situation is similar in Australia and New
Zealand, with the prefixes AS/NZS.

Harmonic solutions can be divided into two main categories:
passive and active. Where the passive solutions consist of
capacitors, inductors or a combination of the two in different
arrangements.
The simplest solution is to add inductors/reactors of typically
3% to 5% in front of the frequency converter. This added
inductance reduces the amount of harmonic currents
produced by the drive. More advanced passive solutions
combine capacitors and inductors in trap arrangement
specially tuned to eliminate harmonics starting from e.g. the
5th harmonic.

The active solutions determine the exact current that would
cancel the harmonics present in the circuit and synthesizes
and injects that current into the system. Thus the active
solution can mitigate the real-time harmonic disturbances,
which makes these solutions very effective at any load
profile. To read more about the Danfoss active solutions Low
Harmonic Drive (LHD) or Active Filters (AAF) please see MG.

34.OX.YY and MG.90.VX.YY.

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3

4 Introduction to Advanced Harmonic Filters

4.1 Operation Principle

The Danfoss Advanced Harmonic Filters (AHF) consist of a
main inductor L0 and a two-stage absorption circuit with the
inductors L1 and L2 and the capacitors C1 and C2. The
absorption circuit is specially tuned to eliminate harmonics
starting with the 5th harmonic and is specific for the
designed supply frequency. Consequently the circuit for
50Hz has different parameters than the circuit for 60Hz.

L

0

L

1

L

2

C

2

C

1

M

AHF

Supply Motor

130BB578.11

Frequency
converter

AHFs are available in two variants for two performance
levels: AHF005 with 5% THiD (total current harmonic
distortion) and AHF010 with 10% THiD. The strategy behind
the two levels is to offer a performance similar to 12 pulse
rectifiers with the AHF010 and a performance similar to 18
pulse rectifiers with AHF005.

The filter performance in terms of THiD varies as a function
of the load. At nominal load the performance of the filter
should be equal or better than 10% THiD for AHF010 and 5%
THiD for AHF005.

At partial load the THiD has higher values. However, the
absolute value of the harmonic current is lower at partial
loads, even if the THiD has a higher value. Consequently, the
negative effect of the harmonics at partial loads will be lower
than at full load.

Example:
An 18.5kW frequency converter is installed on a 400V/50Hz
grid with a 34A AHF010 (type code AHF-DA-34-400-50-20-A).
Following values are measured for different load currents,
using a harmonic analyzer:

I line RMS [A]

Fundamental
current at 50Hz
I1 RMS [A]

THiD [%] Total harmonic

current Ih RMS
[A]

1

9.6 9.59 5.45 0.52

15.24 15.09 13.78 2.07

20.24 20.08 12.46 2.5

25.17 25 11.56 2.89

30.27 30.1 10.5 3.15

34.2 34.03 9.95 3.39

1

)The total harmonic current has been calculated. The THiD

vs. load plot is shown in the following figure.

AHF-DA-34-400-50-20-A

0

2

4

6

8

10

12

14

16

10 15 20 25 30 35

Iline [A]

THiD [%]

0

0,5

1

1,5

2

2,5

3

3,5

4

Harmonic current Ih [A]

130BB579.10

THiD [%]

Harmonic current Ih [A]

It can be observed that at partial load, 15A, the THiD is
approximately 14%, compared to 10% at the nominal load of
34A. On the other hand, the total harmonic current is only

2.07A at 15A line current against 3.39A harmonic current at
34A line current. Thus, THiD is only a relative indicator of the
harmonic performance. The harmonic distortion of the
voltage will be less at partial load than at nominal load.

Factors such as background distortion and grid unbalance
can affect the performance of AHF filters. The specific figures
are different from filter to filter and the graphs below show
typical performance characteristics. For specific details a
harmonic design tool such as MCT 31 or Harmonic
Calculation Software (HCS) should be used.

Background distortion: The design of the filters aims to
achieve 10% respectively 5% THiD levels with a background
distortion of THvD = 2%. Practical measurements on typical
grid conditions in installations with frequency converters
show that often the performance of the filter is slightly
better with a 2% background distortion. However, the
complexity of the grid conditions and mix of specific
harmonics can not allow a general rule about the
performance on a distorted grid. Therefore we have chosen
to present worst-case performance deterioration character­istics with the background distortion.

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44

0 20 40 60 80 100

0

5

10

15

20

25

THvD 0%
THvD 2%
THvD 5%

Load [%]

THiD average [%]

130BB580.10

Illustration 4.1 AHF005

0

10

20

30

40

50

60

0 20 40 60 80 100

Load [%]

THvD 0%
THvD 2%
THvD 5%

THiD [%]

130BB581.10

Illustration 4.2 AHF010

Performance at 10% THvD has not been plotted. However,
the filters have been tested and can operate at 10% THvD
but the filter performance can no longer be guaranteed.

The filter performance also deteriorates with the unbalance
of the supply. Typical performance is shown in the graphs
below.

0% unbalance
1% unbalance
2% unbalance
3% unbalance

0 20 40 60 80 100

Load [%]

0

2

4

6

8

10

12

14

THiD [%]

130BB582.10

Illustration 4.3 AHF005

130BB583.10

0

0 20 40 60 80 1 00

Load [%]

5

10

15

20

25

0% unbalance
1% unbalance
2% unbalance
3% unbalance

THiD average [%]

Illustration 4.4 AHF010

4.1.1 Power Factor

In no load conditions (the frequency converter is in stand-by)
the frequency converter current is negligible and the main
current drawn from the grid is the current through the
capacitors in the harmonic filter. Therefore the power factor
is close to 0, capacitive. The capacitive current is approxi­mately 25% of the filter nominal current (depends on filter
size, typical values between 20 and 25%). The power factor
increases with the load. Because of the higher value of the
main inductor L0 in the AHF005, the power factor is slightly
higher than in the AHF010.

Following graphs show typical values for the true power
factor on AHF010 and AHF005.

0

0,1

0,2

0,3

0,4

0,5

0,6

0,7

0,8

0,9

1

0 20 40 60 80 100

Load [%]

True Power Fac tor

130BB584.10

Illustration 4.5 AHF005

0,1

0,2

0,3

0,4

0,5

0,6

0,7

0,8

0,9

1

0 20 40 60 80 100

Load [%]

0

True Power Factor

130BB585.10

Illustration 4.6 AHF010

Introduction to Advanced Ha... AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 13

4 4

4.1.2 Capacitor Disconnect

If the specific application requires a higher power factor at
no-load and the reduction of the capacitive current in stand­by, a capacitor disconnect should be used. A contactor can
disconnect the capacitor at loads below 20%. It is important
to note that the capacitors may not be connected at full load
or disconnected at no load.

It is very important to consider the capacitive current in the
design of applications where the harmonic filter is supplied
by a generator. The capacitive current can overexcite the
generator in no-load and low-load condition. The over­excitation causes an increase of the voltage that can exceed
the allowed voltage for the AHF and the frequency
converter. Therefore a capacitor disconnect should always be
used in generator applications and the design carefully
considered.

Compared to multi-pulse rectifiers, passive harmonic filter
(such as AHF) are more robust against background distortion
and supply imbalance. However, the performance of passive
filters is inferior to the performance of active filters when it
comes to partial load performance and power factor. For
details about the performance positioning of the various
harmonic mitigation solutions offered by Danfoss, please
consult the relevant harmonic mitigation literature.

Introduction to Advanced Ha... AHF005/010 Design Guide

14 MG.80.C4.02 - VLT® is a registered Danfoss trademark

44

5 Selection of Advanced Harmonic Filter

This chapter will provide guidance about how to choose the
right filter size and contains calculation examples, electrical
data and the general specification of the filters.

5.1 How to Select the Correct AHF

For optimal performance the AHF should be sized for the
mains input current to the frequency converter. This is the
input current drawn based on the expected load of the
frequency converter and not the size of the frequency
converter itself.

5.1.1 Calculation of the Correct Filter Size
Needed

The mains input current of the frequency converter (I

FC,L

) can

be calculated using the nominal motor current (I

M,N

) and the
displacement factor (Cos φ) of the motor. Both values are
normally printed on the name plate of the motor. In case the
nominal motor voltage (U

M,N

) is unequal to the actual mains
voltage (UL), the calculated current must be corrected with
the ratio between these voltages as shown in the following

equation:

I

FC.L

= 1.1 ×

I

M,N

×

cos

(ρ)

×

U

M,N
U

L

The AHF chosen must have a nominal current (I

AHF,N

) equal to
or larger than the calculated frequency converter mains
input current (I

FC,L

).

NOTE

Do not oversize the AHF. The best harmonic performance is
obtained at nominal filter load. Using an oversized filter will
most likely result in reduced THiD performance.

If several frequency converters are to be connected to the
same filter, the AHF must be sized according to the sum of
the calculated mains input currents.

NOTE

If the AHF is sized for a specific load and the motor is
changed, the current must be recalculated to avoid
overloading the AHF.

5.1.2 Calculation Example

System mains voltage (UL): 380V
Motor name plate power(PM): 55kW
Motor efficiency (ƞM):

0.96

FC efficiency (ƞFC):

0.97

AHF effiency (ƞ

AHF

)(worst case estimate):

0.98

Maximum line current (RMS):

P

M

× 1000

U

L

× ηM× ηFC× η

AHF

× 3

=

55 × 1000

380 × 0.96 × 0.97 × 0.98 × 3

= 91.57

A

In this case a 96A filter must be chosen.

5.1.3

Voltage Boost

In stand-by and under low condition, the AHFs will boost the
input voltage with up to 5%. This means that the voltage at
the frequency converter terminals is up to 5% higher than
the voltage at the input of the filter. This should be
considered at the design of the installation. Special care
should be taken in 690V applications, where the voltage
tolerance of the frequency converter is reduced to +5%, the
boost voltage can, at low load and stand-by, be limited via
the available capacitor disconnect. For more information see
section 6.2.2.

Selection of Advanced Harmo... AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 15

5 5

5.2 Electrical Data

Code number

AHF005

IP00

IP20

Code number

AHF010

IP00

IP20

Filter current

rating

Typical motor VLT power and current

ratings

Losses Acoustic noise Frame size

AHF005 AHF010

A kW kW A W W dBA AHF005 AHF010

130B1392

130B1229

130B1262

130B1027

10 3 PK37-P4K0 1.2-9 131 93 <70 X1 X1

130B1393

130B1231

130B1263

130B1058

14 7.5 P5K5-P7K5 14.4 184 118 <70 X1 X1

130B1394

130B1232

130B1268

130B1059

22 11 P11K 22 258 206 <70 X2 X2

130B1395

130B1233

130B1270

130B1089

29 15 P15K 29 298 224 <70 X2 X2

130B1396

130B1238

130B1273

130B1094

34 18.5 P18K 34 335 233 <72 X3 X3

130B1397

130B1239

130B1274

130B1111

40 22 P22K 40 396 242 <72 X3 X3

130B1398

130B1240

130B1275

130B1176

55 30 P30K 55 482 274 <72 X3 X3

130B1399

130B1241

130B1281

130B1180

66 37 P37K 66 574 352 <72 X4 X4

130B1442

130B1247

130B1291

130B1201

82 45 P45K 82 688 374 <72 X4 X4

130B1443

130B1248

130B1292

130B1204

96 55 P55K 96 747 428 <75 X5 X5

130B1444

130B1249

130B1293

130B1207

133 75 P75K 133 841 488 <75 X5 X5

130B1445

130B1250

130B1294

130B1213

171 90 P90K 171 962 692 <75 X6 X6

130B1446

130B1251

130B1295

130B1214

204 110 P110 204 1080 742 <75 X6 X6

130B1447

130B1258

130B1369

130B1215

251 132 P132 251 1195 864 <75 X7 X7

130B1448

130B1259

130B1370

130B1216

304 160 P160 304 1288 905 <75 X7 X7

130B3153

130B3152

130B3151

130B3136

325 Paralleling for 355kW 1406 952 <75 X8 X7

130B1449

130B1260

130B1389

130B1217

381 200 P200 381 1510 1175 <77 X8 X7

130B1469

130B1261

130B1391

130B1228

480 250 P250 472 1852 1542 <77 X8 X8

Table 5.1 380-415V, 50Hz

Selection of Advanced Harmo... AHF005/010 Design Guide

16 MG.80.C4.02 - VLT® is a registered Danfoss trademark

55

Code number

AHF005

IP00

IP20

Code number

AHF010

IP00

IP20

Filter current

rating

Typical motor VLT power and

current ratings

Losses Acoustic noise Frame size

AHF005 AHF010

A kW kW A W W dBA AHF005 AHF010

2 x 130B1448

2 x 130B1259

2 x 130B1370

2 x 130B1216

608 315 P315 590 2576 1810 <80

2 x 130B3153

2 x 130B3152

2 x 130B3151

2 x 130B3136

650 355 P355 647 2812 1904 <80

130B1448 + 130B1449

130B1259 + 130B1260

130B1370 + 130B1389

130B1216 + 130B1217

685 400 P400 684 2798 2080 <80

2 x 130B1449

2 x 130B1260

2 x 130B1389

2 x 130B1217

762 450 P450 779 3020 2350 <80

130B1449 + 130B1469

130B1260 + 130B1261

130B1389 + 130B1391

130B1217 + 130B1228

861 500 P500 857 3362 2717 <80

2 x 130B1469

2 x 130B1261

2 x 130B1391

2 x 130B1228

960 560 P560 964 3704 3084 <80

3 x 130B1449

3 x 130B1260

3 x 130B1389

3 x 130B1217

1140 630 P630 1090 4530 3525 <80

2 x 130B1449 + 130B1469

2 x 130B1260 + 130B1261

2 x 130B1389 + 130B1391

2 x 130B1217 + 130B1228

1240 710 P710 1227 4872 3892 <80

3 x 130B1469

3 x 1301261

3 x 130B1391

3 x 130B1228

1440 800 P800 1422 5556 4626 <80

2 x 130B1449 + 2 x 130B1469

2 x 130B1260 + 2 x 130B1261

2 x 130B1389 + 2 x 130B1391

2 x 130B1217 + 2 x 130B1228

1720 1000 P1000 1675 6724 5434 <80

Table 5.2 380-415V, 50Hz

Selection of Advanced Harmo... AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 17

5 5

Code number

AHF005

IP00

IP20

Codenumber AHF010

IP00

IP20

Filter current

rating

Typical motor VLT power and current

ratings

Losses Acoustic noise Frame size

AHF005 AHF010

A kW kW A W W dBA AHF005 AHF010

130B3095

130B1257

130B2874

130B2262

10 3 PK37-P4K0 1.2-9 131 93 <70 X1 X1

130B3096

130B2858

130B2875

130B2265

14 7.5 P5K5-P7K5 14.14 184 118 <70 X1 X1

130B3097

130B2859

130B2876

130B2268

22 11 P11K 22 258 206 <70 X2 X2

130B3098

130B2860

130B2877

130B2294

29 15 P15K 29 298 224 <70 X2 X2

130B3099

130B2861

130B3000

130B2297

34 18.5 P18K 34 335 233 <72 X3 X3

130B3124

130B2862

130B3083

130B2303

40 22 P22K 40 396 242 <72 X3 X3

130B3125

130B2863

130B3084

130B2445

55 30 P30K 55 482 274 <72 X3 X3

130B3026

130B2864

130B3085

130B2459

66 37 P37K 66 574 352 <72 X4 X4

130B3127

130B2865

130B3086

130B2488

82 45 P45K 82 688 374 <72 X4 X4

130B3128

130B2866

130B3087

130B2489

96 55 P55K 96 747 427 <75 X5 X5

130B3129

130B2867

130B3088

130B2498

133 75 P75K 133 841 488 <75 X5 X5

130B3130

130B2868

130B3089

130B2499

171 90 P90K 171 962 692 <75 X6 X6

130B3131

130B2869

130B3090

130B2500

204 110 P110 204 1080 743 <75 X6 X6

130B3132

130B2870

130B3091

130B2700

251 132 P132 251 1194 864 <75 X7 X7

130B3133

130B2871

130B3092

130B2819

304 160 P160 304 1288 905 <75 X7 X7

130B3157

130B3156

130B3155

130B3154

325 Paralleling for 355kW 1406 952 <75 X8 X7

130B3134

130B2872

130B3093

130B2855

381 200 P200 381 1510 1175 <77 X8 X8

130B3135

130B2873

130B3094

130B2856

480 250 P250 472 1850 1542 <77 X8 X8

Table 5.3 380-415V, 60Hz

Selection of Advanced Harmo... AHF005/010 Design Guide

18 MG.80.C4.02 - VLT® is a registered Danfoss trademark

55

Code number AHF005

IP00

IP20

Codenumber AHF010

IP00

IP20

Filter current

rating

Typical

motor

VLT power and current

ratings

Losses Acoustic noise Frame size

AHF005 AHF010

A kW kW A W W dBA AHF005 AHF010

2 x 130B3133

2 x 130B2871

2 x 130B3092

2 x 130B2819

608 315 P315 590 2576 1810 <80

2 x 130B3157

2 x 130B3156

2 x 130B3155

2 x 130B3154

650 315 P355 647 2812 1904 <80

130B3133 + 130B3134

130B2871 + 130B2872

130B3092 + 130B3093

130B2819 + 130B2855

685 355 P400 684 2798 2080 <80

2 x 130B3134

2 x 130B2872

2 x 130B3093

2 x 130B2855

762 400 P450 779 3020 2350 <80

130B3134 + 130B3135

130B2872 + 130B3135

130B3093 + 130B3094

130B2855 + 130B2856

861 450 P500 857 3362 2717 <80

2 x 130B3135

2 x 130B2873

2 x 130B3094

2 x 130B2856

960 500 P560 964 3704 3084 <80

3 x 130B3134

3 x 130B2872

3 x 130B3093

3 x 130B2855

1140 560 P630 1090 4530 3525 <80

2 x 130B3134 + 130B3135

2 x 130B2872 + 130B2873

2 x 130B3093 + 130B3094

2 x 130B2855 + 130B2856

1240 630 P710 1227 4872 3892 <80

3 x 130B3135

3 x 130B2873

3 x 130B3094

3 x 130B2856

1440 710 P800 1422 5556 4626 <80

2 x 130B3134 + 2 x 130B3135

2 x 130B2872 + 2 x 130B2873

2 x 130B3093 + 2 x 130B3094

2 x 130B2855 + 2 x 130B2856

1722 800 P1M0 1675 6724 5434 <80

Table 5.4 380-415V, 60Hz

Selection of Advanced Harmo... AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 19

5 5

Code number

AHF005

IP00

IP20

Codenumber

AHF010

IP00

IP20

Filter current

rating

Typical motor VLT power and current

ratings

Losses Acoustic noise Frame size

AHF005 AHF010

A HP HP A W W dBA AHF005 AHF010

130B1787

130B1752

130B1770

130B1482

10 4 PK37-P4K0 1-7.4 131 93 <70 X1 X1

130B1788

130B1753

130B1771

130B1483

14 10 P5K5-P7K5 9.9+13 184 188 <70 X1 X1

130B1789

130B1754

130B1772

130B1484

19 15 P11K 19 258 206 <70 X2 X2

130B1790

130B1755

130B1773

130B1485

25 20 P15K 25 298 224 <70 X2 X2

130B1791

130B1756

130B1774

130B1486

31 25 P18K 31 335 233 <72 X3 X3

130B1792

130B1757

130B1775

130B1487

36 30 P22K 36 396 242 <72 X3 X3

130B1793

130B1758

130B1776

130B1488

48 40 P30K 47 482 374 <72 X3 X3

130B1794

130B1759

130B1777

130B1491

60 50 P37K 59 574 352 <72 X4 X4

130B1795

130B1760

130B1778

130B1492

73 61 P45K 73 688 374 <72 X4 X4

130B1796

130B1761

130B1779

130B1793

95 75 P55K 95 747 428 <75 X5 X5

130B1797

130B1762

130B1780

130B1494

118 100 P75K 118 841 488 <75 X5 X5

130B1798

130B1763

130B1781

130B1495

154 125 P90K 154 962 692 <75 X6 X6

130B1799

130B1764

130B1782

130B1496

183 150 P110 183 1080 743 <75 X6 X6

130B1900

130B1765

130B1783

130B1497

231 200 P132 231 1194 864 <75 X7 X7

130B2200

130B1766

130B1784

130B1498

291 250 P160 291 1288 905 <75 X7 X7

130B2257

130B1768

130B1785

130B1499

355 300 P200 348 1406 952 <75 X8 X8

130B3168

130B3167

130B3166

130B3165

380 1510 1175 <77 X8 X7

130B2259

130B1769

130B1786

130B1751

436 350 P250 436 1852 1542 <77 X8 X7

Table 5.5 440-480V, 60Hz

Selection of Advanced Harmo... AHF005/010 Design Guide

20 MG.80.C4.02 - VLT® is a registered Danfoss trademark

55

Code number AHF005

IP00/IP20

Code number AHF010

IP00/IP20

Filter current

rating

Typical

motor

VLT power and current

ratings

Losses Acoustic noise Frame size

AHF005 AHF010

A kW kW A W W dBA AHF005 AHF010

130B1900 + 130B2200

130B1765 + 130B1766

130B1783 + 130B1784

130B1497 + 130B1498

522 450 P315 531 2482 1769 <80

2 x 130B2200

2 x 130B1766

2 x 130B1784

2 x 130B1498

582 500 P355 580 2576 1810 <80

130B2200 + 130B3166

130B1766 + 130B3167

130B1784 + 130B3166

130B1498 + 130B3165

671 550 P400 667 2798 2080 <80

2 x 130B2257

2 x 130B1768

2 x 130B1785

2 x 130B1499

710 600 P450 711 2812 1904 <80

2 x 130B3168

2 x 130B3167

2 x 130B3166

2 x 130B3165

760 650 P500 759 3020 2350 <80

2 x 130B2259

2 x 130B1769

2 x 130B1786

2 x 130B1751

872 750 P560 867 3704 3084 <80

3 x 130B2257

3 x 130B1768

3 x 130B1785

3 x 130B1499

1065 900 P630 1022 4218 2856 <80

3 x 130B3168

3 x 130B3167

3 x 130B3166

3 x 130B3165

1140 1000 P710 1129 4530 3525 <80

3 x 130B2259

3 x 130B1769

3 x 130B1786

3 x 130B1751

1308 1200 P800 1344 5556 4626 <80

2 x 130B2257 + 2 x 130B2259

2 x 130B1768 + 2 x 130B1768

2 x 130B1785 + 2 x 130B1786

2 x 130B1499 + 2 x 130B1751

1582 1350 P1M0 1490 6516 5988 <80

Table 5.6 440-480V, 60Hz

Selection of Advanced Harmo... AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 21

5 5

Code

number

AHF005

IP00/IP20

Code

number

AHF010

IP00/IP20

Filter current rating Typical motor VLT Power and Current Ratings Losses Acoustic noise

Frame size

50Hz AHF005 AHF010

A Hp kW A W W dBa

AHF005 AHF010

130B5261

130B5246

130B5229

130B5212

15 10 P11K 15 298 224 <70 X3 X3

130B5262

130B5247

130B5230

130B5213

20 16.4 P15K 19.5 335 233 <70 X3 X3

130B5263

130B5248

130B5231

130B5214

24 20 P18K 24 396 242 <70 X3 X3

130B5264

130B5249

130B5232

130B5215

29 24 P22K 29 482 274 <70 X4 X4

130B5265

130B5250

130B5233

130B5216

36 33 P30K 36 574 352 <70 X4 X4

130B5266

130B5251

130B5234

130B5217

50 40 P37K 49 688 374 <70 X5 X5

130B5267

130B5252

130B5235

130B5218

58 50 P45K 58 747 428 <70 X5 X5

130B5268

130B5253

130B5236

130B5219

77 60 P55K 74 841 488 <72 X6 X6

130B5269

130B5254

130B5237

130B5220

87 75 P75K 85 962 692 <72 X6 X6

130B5270

130B5255

130B5238

130B5221

109 100 P90K 106 1080 743 <72 X6 X6

130B5271

130B5256

130B5239

130B5222

128 125 P110 124 1194 864 <72 X6 X6

130B5272

130B5257

130B5240

130B5223

155 150 P132 151 1288 905 <72 X7 X7

130B5273

130B5258

130B5241

130B5224

197 200 P160 189 1406 952 <72 X7 X7

130B5274

130B5259

130B5242

130B5225

240 250 P200 234 1510 1175 <75 X8 X8

130B5275

130B5260

130B5243

130B5226

296 300 P250 286 1852 1288 <75 X8 X8

Table 5.7 600V, 60Hz

Selection of Advanced Harmo... AHF005/010 Design Guide

22 MG.80.C4.02 - VLT® is a registered Danfoss trademark

55

Code

number

AHF005

IP00/IP20

Code

number

AHF010

IP00/IP20

Filter current rating Typical motor VLT Power and Current Ratings Losses Acoustic noise

Frame size

50Hz AHF005 AHF010

A HP kW A W W dBa

AHF005 AHF010

2 x 130B5273

2 x 130B5258

130B5244

130B5227

366 350 P315/P355 339/366 2812 1542 <75 X8

2 x 130B5273

2 x 130B5258

130B5245

130B5228

395 400 P400 395 2812 1852 <75 X8

2 x 130B5274

2 x 130B5259

2 x 130B5242

2 x 130B5225

480 500 P500 482 3020 2350

2 x 130B5275

2 x 130B5260

2 x 130B5243

2 x 130B5226

592 600 P560 549 3704 2576

3 x 130B5274

3 x 130B5259

2 x 130B5244

2 x 130B5227

732 650 P630 613 4530 3084

3 x 130B5274

3 x 130B5259

2 x 130B5244

2 x 130B5227

732 750 P710 711 4530 3084

3 x 130B5275

3 x 130B5260

3 x 130B5243

3 x 139B5226

888 950 P800 828 5556 3864

4 x 130B5274

4 x 130B5259

3 x 130B5244

3 x 130B5227

960 1050 P900 920 6040 4626

4 x 130B5275

4 x 130B5260

3 x 130B5244

3 x 130B5227

1098 1150 P1M0 1032 7408 4626

4 x 130B5244

4 x 130B5227

1580 1350 P1M2 1227 6168

Table 5.8 600V, 60Hz

Selection of Advanced Harmo... AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 23

5 5

Code number

AHF005 IP00/IP20

Code number

AHF010 IP00/IP20

Filter current rating VLT Power and Current Ratings Losses

Acoustic

noise

Frame size

50Hz

Typical

motor size 500-550V

Typical

motor

size 551-690V AHF005 AHF010

A kW kW A kW kW A W W dBa AHF005 AHF010

130B5000 130B5297

15 7,5 P11K 15 15 P15K 16 298 224 <70 X3 X3

130B5088 130B5280

130B5017 130B5298

20 11 P15K 19,5 18.5 P18K 20 335 233 <70 X3 X3

130B5089 130B5281

130B5018 130B5299

24 15 P18K 24 22 P22K 25 396 242 <70 X3 X3

130B5090 130B5282

130B5019 130B5302

29 18.5 P22K 29 30 P30K 31 482 274 <70 X4 X4

130B5092 130B5283

130B5021 130B5404

36 22 P30K 36 37 P37K 38 574 352 <70 X4 X4

130B5125 130B5284

130B5022 130B5310

50 30 P37K 49 45 P45K 48 688 374 <70 X5 X5

130B5144 130B5285

130B5023 130B5324

58 37 P45K 59 55 P55K 57 747 428 <70 X5 X5

130B5168 130B5286

130B5024 130B5325

77 45 P55K 71 75 P75K 76 841 488 <72 X6 X6

130B5169 130B5287

130B5025 130B5326

87 55 P75K 89 962 692 <72 X6 X6

130B5170 130B5288

130B5026 130B5327

109 75 P90K 110 90 P90K 104 1080 743 <72 X6 X6

130B5172 130B5289

130B5028 130B5328

128 90 P110 130 110 P110 126 1194 864 <72 X6 X6

130B5195 130B5290

130B5029 130B5329

155 110 P132 158 132 P132 150 1288 905 <72 X7 X7

130B5196 130B5291

130B5042 130B5330

197 132 P160 198 160 P160 186 1406 952 <72 X7 X7

130B5197 130B5292

130B5066 130B5331

240 160 P200 245 200 P200 234 1510 1175 <75 X8 X8

130B5198 130B5293

130B5076 130B5332

296 200 P250 299 250 P250 280 1852 1288 <75 X8 X8

130B5199 130B5294

Table 5.9 500-690V,50Hz

Selection of Advanced Harmo... AHF005/010 Design Guide

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55

Code number

AHF005 IP00/IP20

Code number

AHF010 IP00/IP20

Filter current rating VLT Power and Current Ratings Losses

Acoustic

noise

Frame size

50Hz

Typical

motor size 500-550V

Typical

motor

size 551-690V AHF005 AHF010

A kW kW A kW kW A W W dBa AHF005 AHF010

2 x 130B5042 130B5333

366 250 P315 355

315/35

5

P315/

P355

333/368 2812 1542

2 x 130B5197 130B5295

2 x 130B5042 130B5334

395 315 P355 381 400 2812 1852

2 x 130B5197 130B5296

130B5042

+ 130B5066

130B5330

+ 130B5331

437 355 P400 413 500 P400 395 2916 2127

130B5197

+ 130B5198

130B5292

+ 130B5293

130B5066

+ 130B5076

130B5331

+ 130B5332

536 400 P450 504 560 P500 482 3362 2463

130B5198

+ 130B5199

130B5292

+ 130B5294

2 x 130B5076 2 x 130B5332

592 450 P500 574 630 P560 549 3704 2576

2 x 130B5199 2 x 130B5294

130B5076

+ 2x130B5042

130B5332

+ 130B5333

662 500 P560 642 710 P630 613 4664 2830

130B5199

+ 2 x 130B5197

130B5294

+ 130B5295

4 x 130B5042 2 x 130B5333

732 560 P630 743 800 P710 711 5624 3084

4 x 130B5197 2 x 130B5295

3 x 130B5076 3 x 130B5332

888 670 P710 866 900 P800 828 5556 3864

3 x 130B5199 3 x 130B5294

2 x 130B5076

+ 2 x 130B5042

2 x 130B5332

+ 130B5333

958 750 P800 962 1000 P900 920 6516 4118

2 x 130B5199

+ 2 x 130B5197

2 x 130B5294

+ 130B5295

6 x 130B5042 3 x 130B5333

1098 850 P1M0 1079 P1M0 1032 8436 4626

6 x 130B5197 3 x 130B5295

Table 5.10 500-690V,50Hz

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MG.80.C4.02 - VLT® is a registered Danfoss trademark 25

5 5

5.2.1 Accessories

IP21/NEMA1 enclosure kits for the IP20 filters are available
and listed here:

Danfoss part number

IP21/NEMA1 kit for IP20

enclosure

130B3274

X1

130B3275 X2
130B3276 X3
130B3277 X4
130B3278 X5
130B3279 X6
130B3281 X7
130B3282 X8

The kit consists of two parts.
A top plate that prevents vertically falling drops of water and
dirt from entering the filter and a terminal cover ensuring
touch safe terminals. The terminal cover is prepared for
installation of a contactor for capacitor disconnect.

e

c

d

b

a

130BB637.10

Enclosure type

a

(mm)b(mm)c(mm)d(mm)e(mm)
X1 120 160 329.5 344.5 215.5
X2 190 180 433.5 448.5 257.5
X3 145 210 543.5 558.5 252
X4 230 230 573.5 558.5 343
X5 230 250 681.5 696.5 343
X6 300 270 681.5 696.5 410
X7 300 320 796.5 811.5 458.5
X8 400 350 796.5 811.5 553

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55

NOTE

The NEMA 1 cover is designed for the mounting of Danfoss
contactors.
When using non Danfoss contactors, please observe the
dimensions of the NEMA 1 terminal cover and ensure that
there is space for the contactor.

5.3 General Specification

5.3.1 General Technical Data

Supply voltage tolerance

± 10%
Supply frequency tolerance +5%/-1.5%
Overload capability 160% for 60 sec.
Efficiency >0.98
THiD* AHF005 < 5%

AHF010 < 10%
Cos φ of I

L

0.5 cap at 25% I

AHF,N

0.8 cap at 50% I

AHF,N

0.85 cap at 75% I

AHF,N

0.99 cap at 100% I

AHF,N

1.00 cap at 160% I

AHF,N

Power derating Temperature - see derating

curve below.

1000m altitude above sea level

< h < 2000m = 5% per 1000m

NOTE

The reduction of the low harmonic current emission to the
rated THiD implies that the THvD of the non-influenced
mains voltage is lower than 2% and the ratio of short circuit
power to installed load (R

SCE

) is at least 66. Under these
conditions the THiD of the mains current of the frequency
converter is reduced to 10% or 5% (typical values at nominal
load). If these conditions are not or only partially fulfilled, a
significant reduction of the harmonic components can still
be achieved, but the rated THiD values may not be observed.

Enclosure Type

Dimensions in mm

A (height) B (width) C (depth)
X1 332 190 206
X2 436 232 248
X3 594 378 242
X4 634 378 333

X5 747 418 333
X6 778 418 396
X7 909 468 449
X8 911 468 549

Table 5.11 Enclosure Dimensions

5.3.2

Environmental Data

Surroundings
Ambient temperature
during full-scale
operation

5˚C... + 45˚C - without derating
5˚C... + 60˚C - with derating

Temperature during
storage/transport

-25˚C... + 65˚C - transport

-25˚C... + 55˚C - storage
Max. altitude above
sea level

1000m (without derating)
Between 1000m and 2000m (with
derating)

Max. relative humidity Humidity class F without condensation -

5% - 85% - Class 3K3 (non-sondensing)
during operation

Insulation strength Overvoltage category lll according to ENG

61800-5-1

Packaging DIN55468 for transport packaging

materials

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5 5

load in %

110

100

90

80

70

60

40 45 50 55 60

Ambient temperature in ºC

130BB603.10

Illustration 5.1 Temperature Derating Curve

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55

6 How to Install

6.1 Mechanical Mounting

6.1.1 Safety Requirements of Mechanical
Installation

NOTE

Please observe the filter weight and ensure that proper
lifting equipment is used.

NOTE

When installing the filter use the lifting eyes on both sides to
lift the filter.

NOTE

Do not use other parts (terminals, enclosures, etc.).

6.1.2 Mounting

The filters are available in IP00 and IP20 and for both IP
ratings the following guidance must be followed during
installation.

•

All filters must be mounted vertically with the
terminals at the bottom

•

Do not mount the filter close to other heating
elements or heat sensitive material (such as wood)

IP00

•

The surface temperature of the IP00 filters can
exceed 70°C and a hot surface warning label is
placed on the filter

IP20

•

Top and bottom clearance is minimum 150mm

•

The surface temperature of the IP20 filters does not
exceed 70°C

•

The filter can be side-by-side mounted with the
frequency converter and there is no requirement
for spacing between then.

6.1.3

Recommendations for Installation in
Industrial Enclosures

To avoid high frequency noise coupling keep a minimum
distance of 150mm (5.91 inches) to

- mains/supply wires

- motor wires of frequency converter

- control- and signal wires (voltage range < 48V)

To obtain low impedance HF-connections, grounding,
screening 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
equalisation wires with a cross section as large as possible
(min. 10mm²) or thick grounding tapes. Use copper or tinned
copper screened wires only, as steel screened wires are not
suitable for high frequency applications. Connect the screen
with metal clamps or metal glands to the equalisation bars
or PE-connections.

Inductive switching units (relay, magnetic contactor etc.)
must always be equipped with varistors, RC-circuits or
suppressor diodes.

6.1.4

Ventilation

The filters are cooled by means of air circulation.
Consequently the air needs to be able to move freely above
and below the filter.

When mounting the filters in panels or other industrial
enclosures it must be ensured that there is a sufficient
airflow through the filter to reduce the risk of overheating
the filter and the surrounding components.

If other heat sources (such as frequency converters) are
installed in the same enclosure, the heat they generate also
needs to be taken into account when dimensioning the
cooling of the enclosure.

The filters have to be mounted on a wall in order to guide air
through the gap between the wall and the filter. In instal­lations (e.g. panels) where the filter is mounted on rails, the
filter will not be sufficiently cooled because of false airflow
and therefore a back plate can be ordered separately. See
following illustration.

How to Install AHF005/010 Design Guide

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6

6

130BB636.10

Danfoss part number Back plate

130B3283 X1
130B3284 X2
130B3285 X3
130B3286 X4
130B3287 X5 and X6
130B3288 X7 and X8

IP20: Ventilation fan mounted:

380V, 60Hz 400V,

50Hz 460V, Hz

FanCurrent Current

[A] [A] AHF010 AHF005

10 10 no no
14 14 no no
22 19 inside outside
29 25 inside outside
34 31 inside inside
40 36 inside inside
55 48 inside inside
66 60 inside inside
82 73 inside inside

96 95 inside inside
133 118 inside inside
171 154 inside inside
204 183 inside outside
251 231 inside outside
304 291 inside outside
325 355 inside outside
380 380 inside outside
480 436 inside outside

600V, 60Hz 500-690V, 50Hz

Current Fan

[A] AHF010 AHF005
15 inside inside
20 inside inside
24 inside inside
29 inside inside
36 inside outside
50 inside inside
58 inside outside
77 inside inside

87 inside inside
109 inside inside
128 inside outside
155 inside outside
197 inside outside
240 inside outside
296 inside outside
366 outside ­395 outside -

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6

380-480V.50 and 60Hz

Voltage and frequency AHF005 AHF010

380-415V, 50 and 60Hz 440-480, 60Hz Thermal Air speeds Air volume Thermal Air speeds Air volume

[A] losses in W m/s m³/s losses in W m/s m³/s
10 10 131 2 0,0118 93 2 0,0084
14 14 184 2 0,0166 118 2 0,0106
22 19 258 2 0,0232 206 2 0,0185
29 25 298 2 0,0268 224 2 0,0202
34 31 335 2 0,0302 233 2 0,0210
40 36 396 2 0,0356 242 2 0,0218
55 48 482 2 0,0434 274 2 0,0247
66 60 574 2 0,0517 352 2 0,0317
82 73 688 2 0,0619 374 2 0,0337
96 95 747 2 0,0672 428 2 0,0385

133 118 841 2 0,0757 488 2 0,0439
171 154 962 2 0,0866 692 2 0,0623
204 183 1080 2,5 0,0972 743 2,5 0,0669
251 231 1194 2,5 0,1075 864 2,5 0,0778
304 291 1288 2,5 0,1159 905 2,5 0,0815
325 355 1406 2,5 0,1265 952 2,5 0,0857
381 380 1510 2,5 0,1359 1175 2,5 0,1058
480 436 1852 2,5 0,1667 1542 2,5 0,1388

600V,60Hz

Voltage and frequency AHF005 AHF010

500-690V, 50Hz 600V, 60Hz Thermal Air speeds Air volume Thermal Air speeds Air volume

[A] losses in W m/s V(m3/s) losses in W m/s V(m3/s)
15 298 2 0,0268 224 2 0,0202
20 335 2 0,0302 233 2 0,0210
24 396 2 0,0356 242 2 0,0218
29 482 2 0,0434 274 2 0,0247
36 574 2 0,0517 352 2 0,0317
50 688 2 0,0619 374 2 0,0337
58 747 2 0,0672 428 2 0,0385
77 841 2 0,0757 488 2 0,0439

87 962 2 0,0866 692 2 0,0623
109 1080 2 0,0972 743 2 0,0669
128 1194 2 0,1075 864 2 0,0778
155 1288 2,5 0,1159 905 2,5 0,0815
197 1406 2,5 0,1265 952 2,5 0,0857
240 1510 2,5 0,1359 1175 2,5 0,1058
296 1852 2,5 0,1667 1288 2,5 0,1159
366 - - - 1542 2,5 0,1388
395 - - - 1852 2,5 0,1667

How to Install AHF005/010 Design Guide

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6

6

6.2 Electrical Installation

6.2.1 Over Temperature Protection

The Danfoss harmonic filters AHF005 and AHF010 are all equipped with a galvanic isolated switch (PELV) that is closed under
normal operating conditions and open if the filter is overheated.

NOTE

The over temperature protection must be used to prevent damage of the filter caused by over temperature. An immediate stop
or a controlled ramp down within max. 30 sec. has to be performed to prevent filter damage.

There are many ways the switch can be used and one example is to connect terminal A of the harmonic filter to terminal 12 or
13 (voltage supply digital input, 24V) of the Danfoss frequency converter and terminal B to terminal 27. Program digital input
terminal 27 to Coast Inverse. The frequency converter will coast the motor and thereby unload the filter if an over temperature is
detected. Alternatively use terminal 12/33 and set 1-90 Motor Thermal Protection.

X3.1 X3.2 X3.3 X4.1 X4.2 X4.3

X1.1

X1.2

X1.3

X2.1

X2.2

X2.3

A B

91 (L1 96 (U)

97 (V)

98 (W)

92 (L2)

93 (L3)

95 (PE)

PE

01 02

Relay

24V DC

24 - 240V AC

depending on

contactor type

Capacitor

disconnect

(optional)

12

(24 V)

27

(coast inverse)

99 (PE)

AHF

VLT

Frequency

converter

Mains

supply

Motor

PE

130BB904.10

Illustration 6.1 Connection Diagram

NOTE

The maximum rating of the over temperature contactor is 250V AC and 10A.

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6

6.2.2 Capacitor Disconnect

The power factor of the harmonic filter AHF 005/010 is decreasing with decreasing load. At no load the power factor is zero and
the capacitors produce leading current of approximately 25% of rated the filter current. In applications where this reactive
current is not acceptable the terminals X3.1, X3.2, X3.3 and X4.1, X4, X4.3 provide access to the capacitor bank, so it can be
disconnected.

Default (on delivery) the wiring will shorten terminal X3.1 with X4.1, X3.2 with X4.2 and X3.3 with X.4.3. In the case that no
capacitor disconnect is required, no changes should be made to these shorted terminals.

If a disconnection of the capacitors is required a three-phase contactor should be placed between terminals X3 and X4. It is
recommended to use AC3 contactors.

24 V DC

24 – 240 V AC

X 1.1 X1.2 X1.3 X2 .1 X 2.2 X2.3

X3.1 X 3.2 X 3.3 X4.1 X4.2 X4.3

AHF 1

X1.1 X1.2 X1.3 X2.1 X 2.2 X 2.3

X3.1 X3.2 X3.3 X4.1 X4.2 X4.3

AHF 2

To frequency
converter
relay output

01

02

depending on
contactor type

A

B

A

B

To frequency
converter
digital input

12

27

130BB638.11

NOTE

It is not allowed to use one common 3 poled contactor with several paralleled Advanced Harmonic Filters.

NOTE

The AHF filters in stand-by and under low load conditions, when the capacitors are not disconnected, boost the input voltage
with up to 5%. That means that the voltage at the drive terminals is up to 5% higher than the voltage at the input of the filter.
This should be considered at the design of the installation. Special care should be taken in 690V applications where the voltage
tolerance of the drive is reduced to + 5%, unless a capacitor disconnect is used.

NOTE

Only switch the contactor at less than 20% output power. Allow minimum 25 sec. for the capacitors to discharge before re­connecting

How to Install AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 33

6

6

Current rating

380-415V, 50 and

60Hz

Current

rating

440-480V,

60Hz

Danfoss

Contactors for

AHF005 and

AHF010

Alternative

type AC3

A A Type

Contactor

rating1) KVAr
10 10 CI 9 1
14 14 CI 9 2
22 19 CI 9 4
29 25 CI 9 6
34 31 CI 16 7
40 36 CI 16 7
55 48 CI 16 9
66 60 CI 61 11
82 73 CI 61 15
96 95 CI 61 17

133 118 CI 61 22
171 154 CI 61 29
204 183 CI 61 36
251 231 CI 110 44
304 291 CI 110 51
325 355 CI 110 58
380 380 CI 110 66
480 436 CI 141 88

1)

min. 50% of the nominal load

6.2.3

Wiring

Supply voltage must be connected to the terminals X1.1, X1.2 and X1.3. The frequency converter supply terminals L1, L2 and L3
must be connected to the filter terminals X2.1, X2.2 and X2.3

Paralleling of frequency converters
If several frequency converters are to be connected to one harmonic filter, the connection method is similar to the connection
described above. The supply terminals L1, L2 and L3 of the frequency converters must be connected to the filter terminals X2.1,
X2.2 and X2.3.

NOTE

Use cables complying with local regulations.

Paralleling of filters
If the mains input current of the frequency converter exceeds the nominal current of the largest harmonic filter, several
harmonic filters can be paralleled to achieve the necessary current rating – see Electrical Data tabels.

Supply voltage be connected to the terminals X1.1, X1.2 and X1.3 of the filters. The frequency converter supply terminals L1, L2
and L3 must be connected to the filters terminals X2.1, X2.2 and X2.3

Terminals and cables
The following tabels show the terminal types, cable cross section, tightening torque, etc.

How to Install AHF005/010 Design Guide

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6

Main terminals Capacitor disconnect terminals

Current in A Clamp

mains

terminals

Cable cross-

section in

mm

2

Cable end Torque in

Nm

Clamp

capacitor

disconnect

terminals

Cable cross-

section in

mm

2

Cable end Torque in

Nm

10 WDU 6 0.5-10 cable end sleeve 1.6 WDU 2.5 0.5-4 cable end sleeve 0.8
14 WDU 6 0.5-10 cable end sleeve 1.6 WDU 2.5 0.5-4 cable end sleeve 0.8
22 WDU 6 0.5-10 cable end sleeve 1.6 WDU 2.5 0.5-4 cable end sleeve 0.8
29 WDU 6 0.5-10 cable end sleeve 1.6 WDU 2.5 0.5-4 cable end sleeve 0.8
34 WDU 16 1.5-25 cable end sleeve 2.4 WDU 10 1.5-16 cable end sleeve 2.4
40 WDU 16 1.5-25 cable end sleeve 2.4 WDU 10 1.5-16 cable end sleeve 2.4
55 WDU 16 1.5-25 cable end sleeve 2.4 WDU 10 1.5-16 cable end sleeve 2.4
66 WDU 35 2.5-50 cable end sleeve 4.5 WDU 16 1.5-16 cable end sleeve 2.4
82 WDU 35 2.5-50 cable end sleeve 4.5 WDU 16 1.5-16 cable end sleeve 2.4

96 WDU 50 N 10-70 cable end sleeve 6 WDU 16 1.5-16 cable end sleeve 2.4
133 WDU 50 N 10-70 cable end sleeve 6 WDU 16 1.5-16 cable end sleeve 2.4
171 WFF 70 2.5-95 cable lug M8 12 WDU 35 2.5-50 cable end sleeve 4.5
204 WFF 70 2.5-95 cable lug M8 12 WDU 35 2.5-50 cable end sleeve 4.5
251 WFF 300 25-300 cable lug M16 60 WDU 95 N 16-150 cable end sleeve 20
304 WFF 300 25-300 cable lug M16 60 WDU 95 N 16-150 cable end sleeve 20
325 WFF 300 25-300 cable lug M16 60 WDU 95 N 16-150 cable end sleeve 20
380 WFF 300 25-300 cable lug M16 60 WDU 95 N 16-150 cable end sleeve 20
480 WFF 300 25-300 cable lug M16 60 WDU 95 N 16-150 cable end sleeve 20

Table 6.1 380 - 415V, 50 and 60Hz

Main terminals Capacitor disconnect terminals

Current in A Clamp

mains

terminals

Cable cross-

section in

mm

2

Cable end Torque in

Nm

Clamp

capacitor

disconnect

terminals

Cable cross-

section in

mm

2

Cable end Torque in Nm

10 WDU 6 0.5-10 cable end sleeve 1.6 WDU 2.5 0.5-4 cable end sleeve 0.8
14 WDU 6 0.5-10 cable end sleeve 1.6 WDU 2.5 0.5-4 cable end sleeve 0.8
19 WDU 6 0.5-10 cable end sleeve 1.6 WDU 2.5 0.5-4 cable end sleeve 0.8
25 WDU 6 0.5-10 cable end sleeve 1.6 WDU 2.5 0.5-4 cable end sleeve 0.8
31 WDU 16 1.5-25 cable end sleeve 2.4 WDU 10 1.5-16 cable end sleeve 2.4
36 WDU 16 1.5-25 cable end sleeve 2.4 WDU 10 1.5-16 cable end sleeve 2.4
48 WDU 16 1.5-25 cable end sleeve 2.4 WDU 10 1.5-16 cable end sleeve 2.4
60 WDU 35 2.5-50 cable end sleeve 4.5 WDU 16 1.5-25 cable end sleeve 2.4
73 WDU 35 2.5-50 cable end sleeve 4.5 WDU 16 1.5-25 cable end sleeve 2.4

95 WDU 50 N 10-70 cable end sleeve 6 WDU 16 1.5-25 cable end sleeve 2.4
118 WDU 50 N 10-70 cable end sleeve 6 WDU 16 1.5-25 cable end sleeve 2.4
154 WFF 70 2.5-95 cable lug M8 12 WDU 35 2.5-50 cable end sleeve 4.5
183 WFF 70 2.5-95 cable lug M8 12 WDU 35 2.5-50 cable end sleeve 4.5
231 WFF 300 25-300 cable lug M16 60 WDU 95 N 16-150 cable end sleeve 20
291 WFF 300 25-300 cable lug M16 60 WDU 95 N 16-150 cable end sleeve 20
355 WFF 300 25-300 cable lug M16 60 WDU 95 N 16-150 cable end sleeve 20
380 WFF 300 25-300 cable lug M16 60 WDU 95 N 16-150 cable end sleeve 20
436 WFF 300 25-300 cable lug M16 60 WDU 95 N 16-150 cable end sleeve 20

Table 6.2 440 - 480V, 60Hz

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6

6

6.2.4 Fuses

In order to protect the installation against electrical and fire
hazards, all filters in an installation must be short-circuit and
over-current protected according to national/international
regulations.

To protect both frequency converter and filter please choose
the type of fuses recommended in the VLT® Design Guide.
The maximum fuse rating per filter size is listed below.

Filter current

Maximum size of fuse

380V, 60Hz
400V, 50Hz

460V, 60Hz

[A] [A] [A]

10 10 16
14 14 35
22 19 35
29 25 50
34 31 50
40 36 63
55 48 80
66 60 125
82 73 160

96 95 250
133 118 250
171 154 315
204 183 350
251 231 400
304 291 500
325 355 630
380 380 630
480 436 800

In applications where filters are paralleled it might be
necessary to install fuses in front of each filter and in front of
the frequency converter.

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6

6.3 Mechanical Dimensions

6.3.1 Sketches

205.5 mm[8.09 In]

246 mm[9.69 In]

276 mm[10.87 In]

295 mm[11.67 In]

6.8 mm[0.27 In]

332,11 mm[13.08 In]

190 mm[7.48 In]

12 mm[0.47 In]

163 mm[6.42 In]

188 mm[7.40 In]

130BB599.10

x1.1

x1.2

x1.3

x2.1

x2.2

x2.3

x4.1

x4.2

x4.3

x3.1

x3.2

x3.3

F1

F2

Illustration 6.2 X1 No Fan

How to Install AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 37

6

6

247.5 mm [9.74 In]

350 mm [13.78 In]

380 mm [14.96 In]

399,55 mm [15.73 In]

436,11 mm [17.17 In]

6.8 mm [0.27 In]

12 mm [0.47 In]

205 mm [8.07 In]

230 mm [9.06 In]

232 mm [9.13 In]

X1.1

X1.2

X1.3

X2.1

X2.2

X2.3

X3.1

X3.2

X3.3

X4.1

X4.2

X4.3

F1

F2

130BB597.10

Illustration 6.3 X2 Internal Fan

How to Install AHF005/010 Design Guide

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6

247.5 mm [9.74 In]

350 mm [13.78 In]

380 mm [14.96 In]

399,55 mm [15.73 In]

436.11 mm [17.17 In]

6.8 mm [0.27 In]

12 mm [0.47In]

205 mm [8.07 In]

230 mm [9.06 In]

232 mm [9.13 In]

X1.1

X1.2

X1.3

X2.1

X2.2

X2.3

X3.1

X3.2

X3.3

X4.1

X4.2

X4.3

F1

F2

450.61 mm [17.74 In]

130BB598.10

Illustration 6.4 X2 External Fan

How to Install AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 39

6

6

330 mm [12.99 In]

F1

F2

X1.1

X1 2

X1 3

X2.1

X2 2

X2 3

X1.1

X1 2

X1 3

X2.1

X2 2

X2 3

460 mm [18.11 In]

145 mm [5.71 In] 145 mm [5.71 In]233 mm [9.17 In]

9 mm [0.35 In]

9 mm [0.35 In]

9 mm [0.35 In]

547 mm [21.54 In]

594.08 mm [23.39 In]

353 mm [13.90 In]

378 mm [14.88 In]

130BB595.10

242 mm [9.53 In]

Illustration 6.5 X3 Internal Fan

How to Install AHF005/010 Design Guide

40 MG.80.C4.02 - VLT® is a registered Danfoss trademark

6

L11

L12

L13

L21

L22

L23

L11

L12

L13

L21

L22

L23

F1

F2

333 mm [13.11 In]

130BB593.10

330 mm [12.99 In]

490 mm [19.29 In]

156.5 mm [6.16 In] 156.5 mm [6.16 In]240 mm [9.45 In]
9 mm [0.35 In]

9 mm [0.35 In]

9 mm [0.35 In]

577 mm [22.72 In]

623.57 mm [24.55 In]

353 mm [13.90 In]

378 mm [14.88 In]

Illustration 6.6 X4 Internal Fan

How to Install AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 41

6

6

420 mm [16.54 In]

713 mm [28.07 In]

427 mm [16.381 In]

240 mm [9.45 In]

240 mm [9.45 In]

300 mm [11.81 In]

448.5 mm [17.661 In]

9 mm [0.35 In]

908.86 mm [35.78 In]

800 mm [31.50 In]

443 mm [17.44 In]

468 mm [18.43 In]

130BB588.10

F1

F2

Illustration 6.11 X7 External Fan

How to Install AHF005/010 Design Guide

44 MG.80.C4.02 - VLT® is a registered Danfoss trademark

6

420 mm[16.54 In]

713 mm[20.07 In]

910.56 mm [95.A5 In]

900.06 mm [95.44 In]

900 mm [91.50 In]

443 mm [17.44 In]

468 mm [18.43 In]

240 mm [9.45 In]240 mm [9.45 In] 300 mm [11.91 In]

130BB608.10

9 mm [0.35 In]

9 mm [0.35 In]

543 mm [21.59 In]

F1

F2

Illustration 6.12 X8 Internal Fan

How to Install AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 45

6

6

420

713

F1

F2

910.56 mm [95.A5 In]

900.06 mm [95.44 In]

900 mm [91.50 In]

443 mm [17.44 In]

468 mm [18.43 In]

240 mm [9.45 In]240 mm [9.45 In] 200 mm [11.91 In]

130BB586.10

9 mm [0.35 In]

9 mm [0.35 In]

543 mm [21.53 In]

Illustration 6.13 X8 External Fan

How to Install AHF005/010 Design Guide

46 MG.80.C4.02 - VLT® is a registered Danfoss trademark

6

6.3.2 IP00 Enclosures

6.8 mm (0.27 In)

188mm (7.4 In)

295 mm (11.61 In)

163 mm (6.42 In)

188 mm (7.4 In)

268 mm (10.55 In) 8 mm (0.31 In)

mm (0.47 In) 12

332 mm (13.07 In)

197 mm (7.76 In)

mm (0.27 In)6.8

130BB810.10

Illustration 6.14 X1

How to Install AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 47

6

6

230 mm(9.05 In)

213.9 mm (8.42 In)

435 mm (17.13 In)

372 mm (14.65 In)

8 mm (0.31 In)

mm (0.27 In)6.8

mm( 0.47 In)12

205 mm (8.07 In)

399 mm( 15.71 In)

6.8 mm (0.27 In)

130BB811.10

Illustration 6.15 X2

How to Install AHF005/010 Design Guide

48 MG.80.C4.02 - VLT® is a registered Danfoss trademark

6

594 mm (23.39 In)

238.5 mm (9.39 In)

353 mm (13.9 In)

9 mm (0.35 In)

9 mm (0.35 In)

523 mm (20.60 In)

15 mm (0.60 In)

15 mm (0.60 In)

145 mm (5.71 In)

233 mm (9.20 In)

378 mm (14.88 In)

322 mm (12.68 In)

mm (0.35 In)9

130BB812.10

Illustration 6.16 X3

How to Install AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 49

6

6

624 mm (24.57 In)

333 mm (13.11 In)

378 mm(14.88 In)

322 mm (12.68 In)

9 mm (0.35 In)

9 mm (0.35 In)

mm (0.35 In)9

577 mm (22.72 In)

553 mm (21.77 In)

15 mm (0.60 In)

15 mm (0.60 In)

141 mm ( 5.55 In) 240 mm (9.45 In)

353 mm (13.90 In)

130BB814.10

Illustration 6.17 X4

How to Install AHF005/010 Design Guide

50 MG.80.C4.02 - VLT® is a registered Danfoss trademark

6

737 mm (29.02 In)

332 mm (13.07 In)

210.5 mm (8.29 In) 240 mm (9.45 In) 210.5 MM (8.29 In)

15 mm (0.60 In)15 mm (0.60 In)

393 mm (15.47 In)

362 mm (14.25 In)

418 mm (16.46 In)

685 mm (26.97 In)

9 mm (0.35 In)

mm (0.35 In)9

9 mm (0.35 In)

130BB815.10

Illustration 6.18 X5

How to Install AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 51

6

6

767.6 mm (30.22 In)

414.5 mm (13.32 In)

210.5 mm (8.29 In)

240 mm (9.45 In)

210.5 mm (8.29 In)

15 mm (0.60 In)

393 mm( 15.47 In)

15 mm (0.60 In)

362 mm (14.25 In)

418 mm (16.46 In)

685 mm (26.97 In)

9 mm (0.35 In)

9 mm (0.35 In)

mm (0.35 In)9

130BB815.10

Illustration 6.19 X6

How to Install AHF005/010 Design Guide

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6

897 mm (35.31 In)

437 mm (17.20 In)

238 mm (9.37 In) 300 mm (11.81 In) 238 mm (9.37 In)

443 mm (17.44 In)

412 mm (16.22 In)

468 mm (18.42 In)

9 mm (0.35 In)

800 mm (31.50 In)

130BB816.10

Illustration 6.20 X7

How to Install AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 53

6

6

898 mm (35.35 In)

490 mm (19.29 In)

238 mm (9.37 In)

300 mm (11.81 In)

238 mm (9.37 In)

443 mm (17.44 In)

412 mm (16.22 In)

468 mm (18.43 In)

800 mm (31.50 In)

9 mm (0.35 In)

130BB817.10

Illustration 6.21 X8

6.3.3

Physical Dimensions

Enclosure

type

Dimensions in mm

A (height) B (width) C (depth)
X1 245 190 205
X2 350 230 248
X3 460 330 242
X4 490 330 333
X5 747 370 333
X6 778 370 400
X7 909 468 450
X8 911 468 550

6.3.4 IP00 Dimensions

Enclosure Dimensions in mm

Type A (height) B (width) C (depth)

X1 332 188 197
X2 435 230 214
X3 594 378 239
X4 624 378 333
X5 737 418 332
X6 767 418 415
X7 897 468 437
X8 898 468 490

How to Install AHF005/010 Design Guide

54 MG.80.C4.02 - VLT® is a registered Danfoss trademark

6

6.3.5 Weight

AHF010 380 - 415V, 50Hz AHF005 380 - 415V, 50Hz
Current
rating

Frame

size

Weight

IP20

Weight

IP00

Frame

size

Weight

IP20

Weigh

t IP00
[A] [kg] [kg] [kg] [kg]
10 X1 12 8 X1 16 12
14 X1 13 9 X1 20 16
22 X2 22 17 X2 34 29
29 X2 25 5 X2 42 37
34 X3 36 6 X3 50 44
40 X3 40 7 X3 52 45
55 X3 42 7 X3 75 68
66 X4 52 7 X4 82 75
82 X4 56 9 X4 96 87
96 X5 62 10 X5 104 94

133 X5 74 10 X5 130 120
171 X6 85 74 X6 135 124
204 X6 105 94 X6 168 157
251 X7 123 106 X7 197 180
304 X7 136 120 X7 220 204
325 X7 142 126 X7 228 212
381 X7 163 147 X8 260 244
480 X8 205 186 X8 328 309

AHF010 380 - 415V, 60Hz

AHF005 380 - 415V,

60Hz
Current
rating

Frame

size

Weight

IP20

Weight

IP00

Frame

size

Weight

IP20

Weight

IP00
[A] [kg] [kg] [kg] [kg]
10 X1 12 8 X1 16 12
14 X1 13 9 X1 20 16
22 X2 22 17 X2 34 29
29 X2 25 20 X2 42 37
34 X3 36 30 X3 50 44
40 X3 40 33 X3 52 45
55 X3 42 35 X3 75 68
66 X4 52 45 X4 82 75
82 X4 56 47 X4 96 87
96 X5 62 52 X5 104 94

133 X5 74 64 X5 130 120
171 X6 85 74 X6 135 124
204 X6 105 94 X6 168 157
251 X7 123 106 X7 197 180
304 X7 136 120 X7 220 204
325 X7 142 126 X7 228 212
381 X7 163 147 X8 260 244
480 X8 205 186 X8 328 309

AHF010 440 - 480V, 60Hz

AHF005 440 - 480V,

60Hz

Current
rating

Frame

size

Weight

IP20

Weight

IP00

Fram

e size

Weig

ht

IP20

Weig

ht

IP00
[A] [kg] [kg] [kg] [kg]
10 X1 12 8 X1 16 12
14 X1 13 9 X1 20 16
19 X2 22 17 X2 34 29
25 X2 25 20 X2 42 37
31 X3 36 30 X3 50 44
36 X3 40 33 X3 52 45
48 X3 42 35 X3 75 68
60 X4 52 45 X4 82 75
73 X4 56 47 X4 96 87
95 X5 62 52 X5 104 84

118 X5 74 64 X5 130 120
154 X6 85 74 X6 135 124
183 X6 105 94 X6 168 157
231 X7 123 106 X7 197 180
291 X7 136 120 X7 220 204
355 X7 163 126 X7 260 212
380 X7 178 147 X8 295 244
436 X8 205 186 X8 328 309

500-690V, 50Hz 600V, 60Hz

Curren

t rating

Frame

size

Weight

IP00

Weight

IP20

Frame

size

Weigh
t IP00

Weigh

t IP20
[A] [kg] [kg] [kg] [kg]
15 X3 25 31 X3 42 31
20 X3 36 42 X3 50 42
24 X3 40 46 X3 52 46
29 X4 42 49 X4 75 49
36 X4 52 59 X4 82 59
50 X5 56 66 X5 96 66
58 X5 62 72 X5 104 72
77 X6 74 85 X6 130 85
87 X6 85 96 X6 135 96

109 X6 105 116 X6 168 116
128 X6 123 134 X6 197 134
155 X7 136 152 X7 220 152
197 X7 142 158 X7 228 158
240 X8 163 182 X8 260 182
296 X8 205 224 X8 297 224
366 X8 228 244
395 X8 260 276

How to Install AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 55

6

6

7 How to Programme the Frequency Converter

7.1.1 DC-link Compensation Disabling

The FC series include a feature which ensures that the output
voltage is independent of any voltage fluctuation in the DC
link, e.g. caused by fast fluctuation in the mains supply
voltage. In some cases this very dynamic compensation can
produce resonances in the DC link and should then be
disabled. Typical cases are where AHF005/010 is used on
supply grids with high short circuit ratio. Fluctuations can
often be recognized by increased acoustical noise and in
extreme cases by unintended tripping. To prevent
resonances in the DC-link, it is recommended to disable the
dynamic DC-link compensation by setting 14-51 DC Link
Compensation to off.

14-51 DC Link Compensation

Option: Function:

[0] Off Disables DC Link Compensation.

[1] * On Enables DC Link Compensation.

How to Programme the Freque... AHF005/010 Design Guide

56 MG.80.C4.02 - VLT® is a registered Danfoss trademark

77

Index

A

Abbreviations........................................................................................... 4

Active Filters........................................................................................... 14

Apparent Power...................................................................................... 7

B

Background Distortion....................................................................... 12

C

Capacitive Current............................................................................... 14

Capacitor Disconnect.......................................................................... 14

CE Conformity And Labelling............................................................. 4

D

Derating................................................................................................... 27

Displacement

Angle....................................................................................................... 7

Power Factor.................................................................................... 8, 9

E

Efficiency.................................................................................................. 27

F

Fundamental Frequency...................................................................... 8

G

G5/4........................................................................................................... 10

General Warning..................................................................................... 4

Generator................................................................................................ 14

Grid Unbalance...................................................................................... 12

Grounding............................................................................................... 29

H

Harmonic

Calculation Software....................................................................... 12

Mitigation Standards...................................................................... 10

High-voltage Warning........................................................................... 4

I

IEC/EN

61000-3-2............................................................................................ 10

61000-3-4............................................................................................ 10

IEEE 519.................................................................................................... 10

IP21/NEMA1 Enclosure Kits............................................................... 26

L

Leading Current.................................................................................... 33

M

MCT 31...................................................................................................... 12

N

Nominal Motor Current...................................................................... 15

Non-linear Loads..................................................................................... 8

O

Over Temperature Protection.......................................................... 32

P

Partial

Load...................................................................................................... 12

Weighted Harmonic Distortion..................................................... 9

Point Of Common Coupling............................................................... 9

Power Factor............................................................................... 7, 14, 33

R

Reactive Power........................................................................................ 7

Real Power................................................................................................. 7

S

Screening................................................................................................. 29

Short Circuit Ratio................................................................................... 9

T

The Low-voltage Directive (73/23/EEC).......................................... 4

Total

Current Harmonic Distortion....................................................... 12

Demand Distortion............................................................................ 9

Harmonic Distortion (THD)............................................................. 8

True Power Factor............................................................................ 8, 13

Index AHF005/010 Design Guide

MG.80.C4.02 - VLT® is a registered Danfoss trademark 57

www.danfoss.com/drives

*MG80C402*

130R0436 MG80C402 Rev. 2010-12-20