Danfoss VLT AAF006 User manual

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MAKING MODERN LIVING POSSIBLE
Operating Instructions
VLT® Active Filter AAF006
www.danfoss.com/drives

Contents
1 Introduction 4
1.1 Purpose of the Manual 4
1.2 Additional Resources 4
1.3 Product Overview 4
1.3.1 Working Principle 4
1.3.2 IEEE519 Compliance 5
1.4 Ordering Information 6
1.4.1 Filter Configurator 6
1.4.2 Ordering Form Type Code 6
2 Safety 7
2.1 Safety Symbols 7
2.2 Qualified Personnel 7
2.3 Safety Precautions 7
3 Mechanical Installation 8
3.1 Pre-installation 8
3.1.1 Planning the Installation Site 8
3.1.2 Receiving the Active Filter 8
3.1.3 Transportation and Unpacking 8
3.1.4 Lifting 8
3.1.5 Mechanical Dimensions 9
3.2 Mechanical Installation 11
3.2.1 Tools Needed 11
3.2.2 Clearance Requirements 11
3.2.3 Power Terminal Locations 12
3.2.4 Cooling and Airflow 13
3.2.5 Gland/Conduit Entry - IP21 (NEMA 1) and IP54 (NEMA12) 14
4 Electrical Installation 15
4.1 Safety Instructions 15
4.2 Electrical Installation 15
4.2.1 Power Connections 15
4.2.2 Grounding 16
4.2.3 EMC Interference 17
4.2.4 Extra Protection (RCD) 18
4.2.5 RFI Switch 18
4.2.6 Torque 18
4.2.7 Current Transformer (CT) 18
4.2.8 Auto CT Detection 22
Contents Operating Instructions
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4.2.9 Summation Transformers 23
4.2.10 Operating with Capacitor Banks 24
4.2.11 Fuses 26
4.2.12 Mains Disconnectors 26
4.2.13 Control and CT Cable Routing 26
4.2.14 Control Wire Installation 26
4.2.15 Unscreened Control Wires 27
4.2.16 Electrical Installation, Control Cables 28
4.3 Installation Checklist 29
5 User Interface 30
5.1 Local Control Panel Operation 30
5.1.1 Modes of Operation 30
5.1.2 How to Operate Graphical LCP (GLCP) 30
5.1.3 Changing Data 33
5.1.4 Changing a Text Value 33
5.1.5 Changing a Group of Numeric Data Values 33
5.1.6 Changing of Data Value, Step-by-Step 33
5.1.7 Readout and Programming of Indexed Parameters 33
5.1.8 Quick Transfer of Parameter Settings with the LCP 34
5.1.9 Initialisation to Default Settings 34
5.1.10 RS485 Bus Connection 35
5.1.11 Connection to a PC 35
6 Applications and Basic Programming 36
6.1 Paralleling of Active Filters 36
6.2 Programming 38
6.3 Description of Parameters 41
6.4 0-** Operation/Display 41
6.5 5-** Digital I/O Mode 46
6.6 8-** General Settings 48
6.7 14-2* Trip Reset 50
6.8 15-** Drive Information 52
6.9 16-** Data Readouts 56
6.10 300-** AF Settings 58
6.11 301-** AF Readouts 61
6.12 Parameter Lists 62
6.12.1 Default Settings 62
6.12.2 0-** Operation/Display 63
6.12.3 5-** Digital In/Out 64
6.12.4 8-** Comm. and Options 64
Contents Operating Instructions
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6.12.5 14-** Special Functions 65
6.12.6 15-** FC Information 65
6.12.7 16-** Data Readouts 67
6.12.8 300-** AF Settings 68
6.12.9 301-** AF Readouts 68
7 RS485 Installation and Set-up 69
7.1 Installation and Set-up 69
7.2 Network Configuration 70
7.3 FC Protocol Message Framing Structure 70
7.3.12 Conversion 73
7.4 How to Access Parameters in Modbus RTU 74
8 Maintenance, Diagnostics and Troubleshooting 75
8.1 Maintenance and Service 75
8.2 Warning and Alarm Types 75
8.3 Active Filter Warning and Alarm Definitions 76
9 Specifications 81
9.1 Power Rating 81
9.2 Derating for Altitude and Ambient Temperature 84
9.3 Acoustic Noise 84
10 Appendix 85
10.1 Abbreviations and Conventions 85
Index 86
Contents Operating Instructions
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1 Introduction
1.1 Purpose of the Manual
These operating instructions provide information for safe
installation and commissioning of the filter.
The operating instructions are intended for use by
qualified personnel.
Read and follow the operating instructions to use the filter
properly, and pay particular attention to the safety
instructions and general warnings. Keep these operating
instructions available with the filter at all times.
VLT®is a registered trademark.
1.2 Additional Resources
Resources available to understand advanced active filter
functions and programming:
•The VLT
®
Advanced Active Filter Service Manual
provides information on troubleshooting and
testing for field service technicians, as well as
disassembly and assembly instructions.
1.3 Product Overview
1.3.1 Working Principle
The VLT®Advanced Active Filter is used for harmonic
current mitigation and reactive current compensation. The
unit can integrate with various systems and applications as
a centrally installed filter or be combined with a VLT®
frequency converter as a packaged low harmonic drive
solution.
M
M M
130BB717.10
Illustration 1.1 Multiple Working Environments
The active shunt filter monitors all 3-phase line currents
and processes the measured current signal via a digital
signal processor system. The filter then compensates by
actively imposing signals in counter phase to the
unwanted elements of the current (harmonic distortion).
130BB718.10
Illustration 1.2 Active Filter Principles
The filter sets different IGBT switches in real time feeding a
DC voltage into the grid, which creates counter phase
signals. A built-in LCL filter smooths the compensated
current waveform, ensuring that the IGBT switching
frequency and DC component is not imposed to the grid.
The filter operates on generator or transformer supply and
can reduce individual motor loads, non-linear loads, or
Introduction Operating Instructions
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1

mixed loads. Non-linear loads (diode feed loads) must hold
AC coils to protect against overcurrent of the input diodes.
Control Manual
Disconnect
Fuse
Option
Soft charge
circuit
130BB719.10
Illustration 1.3 Block Diagram
The filter allows either overall or selective harmonic
compensation modes. In overall compensation mode, all
harmonics are reduced. In this mode, the filter balances
the load to reduce uneven load distribution among the 3
phases. The steady state performance allows compensation
of harmonics to the 40th order, but the ultra-quick current
injection allows the filter to compensate flicker and other
quick and short-term phenomena. In selective mode, the
user can program acceptable individual harmonic levels
between 5th and 25th order. In selective mode, the filter
does not reduce harmonics in twos and threes, and does
not support phase load balancing and flicker reduction.
See parameter 300-00 Harmonic Cancellation Mode.
Program the filter priority as either reactive current or
harmonic compensation. If harmonic compensation is first
priority, the filter uses the current needed for harmonic
reduction and uses energy for reactive current correction
only if there is excess. The filter automatically and contin-
uously assigns energy between first and second priority to
provide the highest possible mitigation of both reactive
and harmonic compensation. The power factor is
optimised continuously and the supply transformer is used
to its maximum capacity. See parameter 300-01 Compen-
sation Priority.
The active filter has an optional RFI filter for Class A1 equal
to category C2.
1.3.2 IEEE519 Compliance
The active filter is designed to meet IEEE519 recommen-
dation for Isc/Il >20 for even individual harmonic levels.
The filter has a progressive switching frequency that
creates a wide frequency spread, giving lower individual
harmonic levels above the 50th harmonic level.
Introduction Operating Instructions
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11

1.4 Ordering Information
1.4.1 Filter Configurator
Use the ordering number system to design an active filter according to the application requirements. For the VLT
®
Active
Filter AAF 006 Series, it is possible to order standard filters and filters with integral options by sending a type code string
describing the product to the local Danfoss sales office. For example: AAF006A190T4E21HXXGCXXXSXXXXAXBXCFXXXDX
This section describes each character in the type code. In the example, a standard 190 A active filter in an enclosure with
IP21 protection rating is selected for a 380–480 V net. The internet-based configurator configures the right filter for the right
application and generates a type code string. The configurator automatically generates an 8-digit sales number to be
delivered to the local sales office. It is also possible to establish a project list with several products and send it to a Danfoss
sales representative. The configurator can be found at www.danfoss.com/BusinessAreas/DrivesSolutions/.
1.4.2 Ordering Form Type Code
130BB504.10
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
A FA x0 0 A T 4 E H x G C x x x x x x x B x C x x x x xDAS
Illustration 1.4 Type Code Example
Possible choice
Product groups 1-3 AAF
Series 4-6 006
Current rating 7-10 A190: 190 A
A250: 250 A
A310: 310 A
A400: 400 A
Phases 11 T: 3 Phases
Mains Voltage 12 4: 380–480 V AC
Enclosure 13-15 E21: IP21/Nema Type1
E54: IP54/Nema Type 12
E2M: IP21/Nema Type 1 with
mains shield
E5M: IP54/Nema Type 12 with
mains shield
RFI filter 16-17 HX: No RFI filter
H4: RFI filter, Class A1 (optional)
Display (LCP) 19 G: Graphical Local Control Panel
(LCP)
Coating PCB 20 C: Coated PCB
Mains option 21 X: No mains option
3: Mains disconnect and fuse
7: Fuse
Adaptation A 22 Reserved
Adaptation B 23 Reserved
Software release 24-27 Reserved
Software
language
28 Reserved
A options 29-30 AX: No A option
B options 31-32 BX: No B option
C-option configu-
ration
33-37 CFxxx: CO-option occupied with
active filter control card
D options 38-39 DO: 24 V back-up
DX: No options
Table 1.1 Type Code Definitions
176F3535 Backwall cooling kit for D14 (IP54)
176F3537 Backwall cooling kit for E1 (IP54)
Table 1.2 Optional Kits
Introduction Operating Instructions
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2 Safety
2.1 Safety Symbols
The following symbols are used in this document:
WARNING
Indicates a potentially hazardous situation that could
result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that could
result in minor or moderate injury. It can also be used to
alert against unsafe practices.
NOTICE
Indicates important information, including situations that
can result in damage to equipment or property.
2.2 Qualified Personnel
Correct and reliable transport, storage, installation,
operation and maintenance are required for the trouble-
free and safe operation of the active filter. Only qualified
personnel are allowed to install or operate this equipment.
Qualified personnel is defined as trained staff, who are
authorised to install, commission, and maintain equipment,
systems and circuits in accordance with pertinent laws and
regulations. Additionally, the personnel must be familiar
with the instructions and safety measures described in this
document.
2.3 Safety Precautions
WARNING
HIGH VOLTAGE
Active 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.
WARNING
DISCHARGE TIME
The active filter contains DC-link capacitors, which 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.
Voltage
[V]
Output Current
[A]
Minimum waiting
time
(minutes)
380–480 190–400 20
High voltage can be present even when the warning indicator
lights are off.
Table 2.1 Discharge Time
WARNING
LEAKAGE CURRENT HAZARD
Leakage currents exceed 3.5 mA. Failure to ground the
filter properly can result in death or serious injury.
•Ensure correct grounding of the equipment by
a certified electrical installer.
WARNING
EQUIPMENT HAZARD
Contact with rotating shafts and electrical equipment
can result in death or serious injury.
•Ensure that only trained and qualified
personnel perform installation, start up, and
maintenance.
•Ensure that electrical work conforms to national
and local electrical codes.
•Follow the procedures in this document.
CAUTION
INTERNAL FAILURE HAZARD
An internal failure in the filter can result in serious injury
when the filter is not properly closed.
•Before applying power, ensure all safety covers
are in place and securely fastened.
Safety Operating Instructions
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3 Mechanical Installation
3.1 Pre-installation
3.1.1 Planning the Installation Site
NOTICE
Due to the size and clearance requirements of the active
filter, it is important to pre-plan installation. Failure to
do so may result in additional work during and after
installation.
Select the best possible operation site by considering
the following:
•Ambient temperature conditions.
•Altitude at installation point.
•Installation and compensation method.
•Cooling.
•Position of the active filter.
•CT installation point and possibility to reuse
existing CTs.
•Cable routing and EMI conditions.
•Ensure the power source supplies the correct
voltage and frequency.
•If the unit is without built-in fuses, ensure that
the external fuses are rated correctly.
3.1.2 Receiving the Active Filter
When receiving the unit, ensure that the packaging is
intact, and note any damage that may have occurred
during transport. In case of damage, immediately contact
the shipping company to claim the damage.
NOTICE
Damaged packaging can indicate rough transportation
which may have caused interior failures in the unit.
Claim damages even if the exterior of the unit seems
intact.
3.1.3 Transportation and Unpacking
Place the active filter as close as possible to its final instal-
lation site before unpacking it. Keep the filter on the pallet
and boxed as long as possible to avoid damage.
3.1.4 Lifting
Always lift the unit in the dedicated lifting eyes. Use a bar
to avoid bending the lifting holes.
130BB642.10
Illustration 3.1 Recommended Lifting Method for AAF 006,
Enclosure Sizes D14 and E1
NOTICE
The lifting bar must be able to handle the weight of the
unit. See chapter 3.1.5 Mechanical Dimensions for
weights. Maximum diameter for the bar is 25 mm (1
inch). The angle from the top of the unit to the lifting
cable should be > 60°.
NOTICE
The plinth is required to allow airflow to the unit to
provide proper cooling.
Mechanical Installation Operating Instructions
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3.1.5 Mechanical Dimensions
1020.1
[40.2]
199.5
[7.9]
1394.0
[54.9]
1552.8
[61.1]
603.8
[23.8]
555.9
[21.9]
377.8
[14.9]
2X 27.0
[1.1]
414.1
[16.3]
74.1
[2.9]
[8.9]
1780.5
[70.1]
221.6
[8.7]
273.2
[10.8]
130BC632.10
117.4
[4.6]
184.5
[7.3]
369.0
[14.5]
148.0
[5.8]
304.0
[12.0]
1755.5
[69.1]
251.0
[9.9]
160.0
[6.3]
2X 13.0
[.5]
221.0
[8.7]
[225.0]
1
2
Illustration 3.2 AAF006 190 A, Enclosure Size D13
1 Minimum clearance from the ceiling 2 Backwall cooling option
Table 3.1 Legend to Illustration 3.2 and Illustration 3.3
Mechanical Installation Operating Instructions
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600.0
[23.6]
493.5
[19.4]
1230.0
[48.4]
2X 27.0
[1.1]
72.2
[2.8]
389.0
[15.3]
[8.9]
283.3
[11.2]
270.9
[11]
198.2
[7.8]
730.7
[28.8]
1394.1
[54.9]
1544.5
[60.8]
2001.0
[78.8]
184.5
[7.3]
369.0
[14.5]
553.5
[21.8]
23.3
[.9]
249.1
[9.8]
160.0
[6.3]
130BC633.10
225.0
1
2
Illustration 3.3 AAF006 250-400 A, Enclosure Size E1
Enclosure D14 E1
Enclosure protection IP 21/54 21/54
NEMA Type 1/12 Type 1/12
Nominal current rate 190 A 250 A, 310 A, 400 A
Shipping dimensions Height
(mm/in.) 750/29.5 864/34
Width
(mm/in.) 737/29 737/29
Depth
(mm/in.) 1943/76.5 2203/86.7
Weight (kg/
lbs.) 283/623.9 500/1102.3
Unit dimensions Height
(mm/in.) 1780/70 2000/78.7
Width
(mm/in.) 600/23.6 600/23.6
Depth
(mm/in.) 380/14.9 494/19.4
Maximum-
Weight (kg/
lbs.)
238/524.7 453/998.7
Table 3.2 Mechanical Dimensions
Mechanical Installation Operating Instructions
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3.2 Mechanical Installation
Before installing the active filter, examine the mechanical
drawings in chapter 3.1.5 Mechanical Dimensions to become
familiar with the space demands.
3.2.1 Tools Needed
To perform the mechanical installation, the following
tools are needed:
•Drill with a 10 or 12 mm drill bit.
•Tape measure.
•Screw driver.
•Wrench with 7–17 mm metric sockets.
•Wrench extensions.
•Sheet metal punch for conduits or cable glands.
•Lifting bar to lift the unit (rod or tube maximum
Ø 25 mm/0.9 in., able to lift minimum 1000 kg/
2205 lbs.).
•Crane or other lifting aid to place the unit in
position.
•Torx T50 tool.
3.2.2 Clearance Requirements
Space
Ensure proper space above and below the unit to allow
airflow and cable access. In addition, ensure adequate
space in front of the unit for the door to open
(Illustration 3.4, Illustration 3.5).
67.3
[2.7]
575.9
[22.7]
574.2
[22.6]
130BC634.10
Illustration 3.4 Door Clearance IP21/IP54 Enclosure Type, Size
D14
105.7
[4.2]
577.4
[22.7]
576.7
[22.7]
130BC635.10
Illustration 3.5 Door Clearance, IP21/IP54 Enclosure Type, Size
E1
Wire access
Ensure that proper cable access including the necessary
bending allowance.
NOTICE
Power cables are heavy and difficult to bend. To make
installation easier, consider the optimum position of the
unit before delivery.
NOTICE
All cable lugs/shoes must mount within the width of the
terminal bus bar.
Mechanical Installation Operating Instructions
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33

3.2.3 Power Terminal Locations
Consider the position of the terminals when designing for
cable access. See Illustration 3.6, Illustration 3.7,
Illustration 3.8, and Illustration 3.9
88.0
[3.5]
204.0
[8.0]
289.7
[11.4]
29.0
[1.1]
266.2
[10.5]
476.0
[18.7]
259.7
[10.2]
130BC636.10
Illustration 3.6 Terminal Location of D14 with Disconnect
284.1
[11.2]
83.7
[3.3]
167.2
[6.6]
241.9
[9.5]
271.9
[10.7]
505.0
[19.9]
486.0
[19.1]
130BC637.10
Illustration 3.7 Terminal Location of D14 without Disconnect
65.0
[2.6]
130.0
[5.1]
343.0
[13.5]
19.6
[.8]
628.7
[24.8]
194.0
[7.6]
75.0
[3.0]
719.1
[28.3]
389.0
[15.3]
730.7
[28.8]
130BC638.10
Illustration 3.8 Terminal Location of E1 with Disconnect
719.1
[28.3] 609.1
[24.0]
75.0
[3.0]
188.0
[7.4]
112.0
[4.4]
224.0
[8.8]
537.0
[21.1]
605.6
[23.8]
130BC639.10
Illustration 3.9 Terminal Location of E1 without Disconnect
NOTICE
Each terminal allows up to 4 cables with cable lugs or
use of a standard box lug. Ground is connected to the
relevant termination point in the unit.
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3.2.4 Cooling and Airflow
There are different ways to cool the active filter:
•Use the cooling ducts in the top and bottom of
the unit
•Take air into the back of the unit
•Combine top, bottom, and back airflow
Back cooling
The active filter has a back channel cooling system where
85% of all heat is ducted via an IP54 segregated back
channel. This reduces the needed airflow inside the
enclosure and ensures less moisture and dust across vital
components.
The back channel air is normally ventilated via the plinth
inlet and ducted out the top of the enclosure. The design
of the back channel can also take air from the control
room and duct it back out again. This is supported to ease
stress on the control room air conditioner and conserve
energy. To support a backwall inlet, the unit air inlet has to
be blocked via an optional cover and the air outlet ducted
via an optional top duct.
NOTICE
The active filter fan runs for the following reasons:
•Active filter running.
•Specific heat sink temperature exceeded (power
size dependent).
•Specific power card ambient temperature
exceeded (power size dependent).
•Specific control card ambient temperature
exceeded.
Once the fan is started, it runs for a minimum of 10
minutes.
External ducts
If additional duct work is added externally to the
enclosure, the pressure drop in the ducting must be
calculated. Use Illustration 3.10 and Illustration 3.11 to
derate the unit according to the pressure drop.
90
80
70
60
50
40
30
20
10
0
0 0.5 4.9 13 27.3 45.9 66 89.3 115.7 147
(%)
(Pa)
Pressure Increase
Filter Derating
130BB932.10
Illustration 3.10 Enclosure Size D, Derating vs. Pressure
Change
Air Flow: 450 cfm (765 m3/h)
90
80
70
60
50
40
30
20
10
0
(%)
Filter Derating
0 0 0.1 3.6 9.8 21.5 43.4 76 237.5 278.9
(Pa)
Pressure Change
130BB933.10
147.1
Illustration 3.11 Enclosure Size E, Derating vs. Pressure Change
Air Flow: 725 cfm (1230 m3/h)
Mechanical Installation Operating Instructions
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33

3.2.5 Gland/Conduit Entry - IP21 (NEMA 1)
and IP54 (NEMA12)
Cables are connected through the gland plate from the
bottom. Remove the plate and plan where to place the
entry for the glands or conduits. Illustration 3.12 and
Illustration 3.13 show the gland plate openings in bottom
views.
NOTICE
The gland plate ensures the specified protection degree,
and enables proper cooling of the unit. If the gland plate
is not mounted, the unit may trip on Alarm 69, Pwr. Card
Temp.
55.9
[2.2]
257.0
[10.1]
21.9
[.9]
560.0
[22.0]
110.6
[4.4]
182.8
[7.2]
181.9
[7.2]
350.0
[13.8]
130BC640.10
Illustration 3.12 Enclosure Size D14, Bottom View
361.7
[14.2]
20.0
[.8]
560.0
[22.0]
154.8
[6.1]
257.6
[10.1]
40.0
[1.6]
520.0
[20.5]
48.9
[2]
Illustration 3.13 Enclosure Size E1, Bottom View
130BB736.11
Illustration 3.14 Mounting of Base Plate, E1
The base plate of the enclosure size E can be mounted
from either inside or outside of the enclosure, allowing
flexibility in the installation process. If mounted from the
bottom, the glands and cables can be mounted before the
unit is placed on the pedestal.
Mechanical Installation Operating Instructions
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4 Electrical Installation
4.1 Safety Instructions
See chapter 2 Safety for general safety instructions.
CAUTION
SHOCK HAZARD
The active filter can cause a DC current in the PE
conductor.
•When a residual current-operated protective
device (RCD) is used for protection against
electrical shock, only an RCD of Type B is
permitted on the supply side.
Failure to follow the recommendation means the RCD
may not provide the intended protection.
4.2 Electrical Installation
4.2.1 Power Connections
Cabling and fusing
NOTICE
All cabling must comply with national and local
regulations on cable cross-sections and ambient
temperature. UL applications require 75 °C copper
conductors. 75°and 90 °C copper conductors are
thermally acceptable for use in non-UL applications.
The power cable connections are situated as shown in
Illustration 4.1. The mains connection is fitted to the mains
switch if this is included. Dimension the cable cross-section
in accordance with the filter current rating, including skin
and proximity effects, derating, and local legislation.
Connect mains to terminals 91, 92 and 93. Connect ground
to the terminal on the immediate right of terminal 93.
Terminal number Function
91, 92, 93
94
Mains R/L1, S/L2, T/L3
Ground
Table 4.1 Mains and Ground Connections
The conductor predominantly carries currents of high
frequencies so the distribution of current is not evenly
dispersed throughout the cross-section of the conductor.
This is due to 2 independent effects known as skin effect
and proximity effect. Both require derating and,
consequently, the mains cable of the active filter is rated at
a higher current than the filter rating itself.
3 Phase
power
input
130BA026.10
91 (L1)
92 (L2)
93 (L3)
95 PE
Illustration 4.1 Mains Connection Diagram
NOTICE
It is insufficient to rate the power cable for the filter
current rating alone due to skin and proximity effects.
The required derating is calculated as 2 separate factors:
•The skin factor depends on frequency of current,
cable material, and cable dimensions.
•The proximity factor depends on the number of
conductors, diameters and distance between the
individual cables.
The proximity effect is depending on the number of
conductors, diameters and distance between the individual
cables.
The optimised mains cable is:
•Copper wires.
•Single conductors.
•Bus bars.
Electrical Installation Operating Instructions
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Copper affects skin less than aluminum, and bus bars have a larger surface area than cables, reducing the skin effect factor.
Proximity effects of single conductors are negligible.
The cable specifications in Table 4.2 take both skin and proximity effects into account:
Filter Minimum CU wire
mm2(AWG)
Equivalent RMS
cable for CU
Minimum ALU wire
mm2(AWG)
Equivalent RMS
current for ALU
Maximum wire
mm2(AWG)
190 A 70 mm2(2/0) 225 A 95 mm2(3/0) 240 A 2*150 mm2(2*300 MCM)
250 A 120 mm2(4/0) 295 A 150 mm2(300 MCM) 315 A 4x240 mm2(4x500 MCM)
310 A 240 mm2(500 MCM) 365 A 2*95 mm2(2*3/0) 390 A 4x240 mm2(4x500 MCM)
400 A 2*95 mm2(2*3/0) 470 A 2*150 mm2(2*300 MCM) 500 A 4x240 mm2(8x900 MCM)
Table 4.2 Allowed Active Filter Mains Cable with Typical Cable Manufacturer Data
Due to the built-in LCL filter, the unit does not feed the main wire with high dU/dt signals. Doing so reduces the radiated
emission through the mains cable. Cable screen/shielding can thus be omitted allowing the mains cables to be connected
without considering EMC requirements.
The active filter can run at long cable runs. Cable length is limited by the voltage drop. It is advised to keep the cable
lengths to less then 200 m.
Active filters have either built-in or customer-supplied fuses. See chapter 4.2.11 Fuses for fuse recommendations. Always
ensure proper fusing according to local regulation.
4.2.2 Grounding
Consider the following basic issues when installing an
active filter, to obtain electromagnetic compatibility (EMC):
•Safety grounding: The active filter has leakage
current and must be grounded appropriately for
safety reasons. Apply local safety regulations.
•High-frequency grounding: Keep the ground wire
connections as short as possible.
•Use high-strand wire to reduce electrical
interference.
•Do not use pigtails.
Connect the different ground systems at the lowest
possible conductor impedance. Obtain the lowest possible
conductor impedance by keeping the conductor as short
as possible and using the greatest possible surface area.
The metal cabinets of the different devices are mounted
on the enclosure back plate using the lowest possible high
frequency impedance. This avoids having different high
frequency voltages for the individual devices and avoids
the risk of radio interference currents running in
connection cables that may be used between the devices.
The radio interference is reduced. To obtain a low HF
impedance, use the fastening bolts of the devices as a
high-frequency connection to the back plate. Remove any
insulating paint or similar substances from the fastening
points.
1
130BB739.11
1Ground terminals
Illustration 4.2
Electrical Installation Operating Instructions
16 Danfoss A/S © 09/2014 All rights reserved. MG90V302
44

4.2.3 EMC Interference
1
2
A
B
3
4
4
5
6
3
4
7
8
8
7
9
10
130BC643.10
1 Advanced active filter (AAF) 6 Potential equalisation wire [minimum 16 mm2/AWG 6]
2 Customer control termination points for options A and B 7 Clearance, minimum 200 mm (7.9 in)
3 Cable clamp 8 Mains, 3-phase and reinforced PE
4 Screened control wiring 9 Cable gland
5 Customer control input 10 External current transformer connections
Illustration 4.3 EMC-correct Installation
NOTICE
EMC INTERFERENCE
Use screened cables for control wiring. Separate AAF mains input cable from other cables and control wiring. Minimum
200 mm (7.9 in) clearance between mains and control cables is required. Maximise this clearance to minimise EMC
emissions. Doing so reduces the risk of interference between the AAF and other electronic devices.
Electrical Installation Operating Instructions
MG90V302 Danfoss A/S © 09/2014 All rights reserved. 17
44