Harmonic Filtering
Compact, fast response harmonic mitigation solution.
POWER QUALITY
NHP Electrical Engineering Products Pty Ltd
Sales 1300 NHP NHP
nhp.com.au
Sales 0800 NHP NHP
nhp-nz.com
NHP Electrical Engineering Products
NHP NATIONAL MANUFACTURING AND DISTRIBUTION CENTRE
NHP Electrical Engineering Products
(NHP) specialises in motor control,
power distribution and automation
systems.
NHP offers the Australasian market
the complete industrial electrical and
automation solutions package.
As authorised distributors for Rockwell
Automation and their Allen-Bradley®
products in our designated areas of
Australia and throughout all of
New Zealand, NHP is partnered with
the leading global provider of industrial
automation solutions and switchgear
components.
An Australian owned company, NHP is
committed to serving the Australasian
industry with quality products and
customer support. This is achieved
through an 900+ strong team which is
distributed across 25 branches and
24 regional locations throughout Australia
and New Zealand.
While NHP stock an impressive 70,000+
line items, we are much more than
a component supplier. NHP source the
highest quality products from leading
global suppliers, and customise these into
solutions for the local Australian and
New Zealand markets, providing a complete
fit to purpose systems and solutions service.
At NHP we have a strong customer focus
and we look to provide the right product
and product solutions for our customers’
requirements and applications, all at a
competitive price. We value and care for our
customers and support them by offering
personalised service and assistance to
meet their every need and demand. Our
customers can have 100% confidence in our
ability to support them when, where and
how it is needed.
Put simply, NHP is ‘easy to do business with’.
Table of Contents
What are harmonics?
4
Problems Caused by Harmonics
5
Harmonic Resonance 5
Harmonic Standard Compliance
6
IEEE STD 519-1992
6
AS/NZS 61000.3.6:2001 Standard6
Displacement & Total Power Factor 7
Harmonic Mitigation Solutions
8
Passive Harmonic Filtering
8
Active Harmonic Filtering
8
Hybrid Harmonic Filtering
8
Harmonics Filtering Application Example - VSDs
9
ECOsineTM – Passive Harmonic Filters
10
Passive Harmonic Filter Application11
ECOsineTM Passive Harmonic Filter Selection Table
12
Part number coding12
External filter elements
13
Monitoring Status 13
ECOsineTM – Active Harmonic Filters
14
ECOsineTM AHF Parallel Operation
15
Part number coding 18
Recommended External AC mains protection
18
ECOsineTM Active Technical Specification
19
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[3]
What are harmonics?
The term “harmonics” refers to the voltage and current harmonic distortion within an AC
circuit. Any waveform which is not sinusoidal (complex) can be shown to contain sinusoidal
waveforms of integer multiples of the fundamental. In a 50 Hz electrical system, 250 Hz is the
5th harmonic, 350 Hz is the 7th harmonic etc.
Fundamental
frequency
Sum Harmonic
frequencies
Sum total fundamental
plus harmonics
Figure 1. Fundamental frequency, harmonics and the sum of harmonics and fundamental
An electrical system supplies power to loads by delivering current at the fundamental
frequency. Only fundamental frequency current can provide real power. Current delivered at
harmonic frequencies do not deliver any real power to the load.
The percentage of harmonics in a waveform is called THD (total harmonic distortion) and can
be further broken up into THVD (total harmonic voltage distortion) and THID (total harmonic
current distortion). As the THVD and THID increases, the efficiency of the system is greatly
reduced.
THID = I harmonic
I fundamental
X 100
Harmonic currents create harmonic voltages and it is the harmonic voltages that cause the
problems with other equipment that are connected to the same secondary of the transformer
where the harmonic originated.
Harmonics are created by the increased use of non-linear devices such as UPS systems, solid
state variable speed motor drives, rectifiers, welders, arc furnaces, fluorescent ballasts, and
personal computers. The current drawn by these devices is not proportional to the supplied
voltage, and so, such loads are referred to as non-linear loads.
[4]
Problems Caused by Harmonics
High voltage distortion, current distortion and high neutral-to-ground voltage caused by
harmonics can result in equipment failure, production down time and costly repairs to the
electrical distribution network.
It is critical that the consumer is aware of the costly problems and hazards associated with
high levels of harmonics especially given the dramatic increase in use of non linear devices.
These harmonics can greatly impact the electrical distribution network along with all
facilities and equipment that are connected.
Main problems associated with harmonics include:
• Large load currents in the neutral wires of a 3 phase system.
This can cause overheating of the neutral wires, which can result
in a potential fire hazard.
• Interference in telecommunications systems and equipment
• Erratic operation of control and protection relays
• Tripping of circuit breakers and other protective devices
• Failure or malfunction of computers, motor drives, lighting circuits
and other sensitive loads
• Overheating of standard electrical supply transformers resulting in
costly down time and repairs or replacement of transformer.
• Poor power factor.
• Resonance which produces over-current surges.
Harmonic Resonance
Resonance occurs when the system reactances (i.e. capacitive and inductive reactance)
are equal. Excessive currents will result if the resulting resonant frequency corresponds
to the frequency on which electrical energy is present and this will cause serious problems
as mentioned above.
Some indicators of resonance include overheating, frequent circuit breaker tripping,
irregular fuse operation, capacitor failure, electronic equipment malfunction, flicking
lights and telephone interference.
[5]
Harmonic Standard Compliance
Power utility companies and Australian Standards stipulate maximum harmonic levels which apply
at a customer’s PCC (point of common coupling). Generally, the maximum permissible harmonic
levels are given in terms of % THVD however to achieve a reduction in THVD, the customer is
required to reduce their THID through the use of harmonic mitigation equipment. Commonly,
THVD levels are required to be between 5-8%, however this will vary from state to state. IEEE STD
519 (1992) and AS/NZS 61000.3.6 (2001) are two widely used harmonic limit standards, however
other standards may also be relevant including AS/NZS 61000.3.2 2007. Please confirm harmonic
requirements with your uitility provider. For more information on the following tables please refer
to the relevant standard.
IEEE STD 519-1992
Table 10.3 – Current Distortion Limits for General Distribution Systems
(120 V Through 69 000 V)
Maximum Harmonic Current Distortion in Percent of IL
Individual Harmonic Order (Odd Harmonics)
ISC / IL
<11
11≤h<17
17≤h<23
23≤h<35
35≤h
TDD
<20*
4.0
2.0
1.5
0.6
0.3
5.0
20<50
7.0
3.5
2.5
1.0
0.5
8.0
50<100
10.0
4.5
4.0
1.5
0.7
12.0
100<1000
12.0
5.5
5.0
2.0
1.0 1
5.0
>1000
15.0
7.0
6.0
2.5
1.4
20.0
Even harmonics are limited to 25% of the odd harmonic limits above
Current distortions that result in a dc offset, e.g., half-wave converters, are not allowed
*All power generation equipment is limited to these values of current distortion,
regardless of actual ISC / IL
where
ISC = maximum short-circuit current at PCC
IL = maximum demand load current (fundamental frequency component) at PCC.
AS/NZS 61000.3.6:2001 Standard
Table 1 – Compatibility levels for harmonic voltages (in percent of the nominal
voltage) in LV and MV power systems.
Odd Harmonics non
multiple of 3
[6]
Odd Harmonics non
multiple of 3
Order h
Harmonic
voltage %
Order h
5
6
3
7
5
9
11
3.5
15
13
3
21
17
2
>21
19
Order h
Harmonic
voltage %
5
2
2
1.5
4
1
0.3
6
0.5
0.2
8
0.5
0.2
10
0.5
1.5
12
0.2
23
1.5
>12
0.2
25
1.5
>25
0.2 + 1.3
(25/h)
Note: Total harmonic distortion (THD) 8 %
Harmonic
voltage %
Even Harmonics
The Green Star Advantage
Did you know you can now take full advantage of the Green Star Initiative when applying
harmonic mitigation? The Green Star initiative rewards businesses for improved power
and energy use and through harmonic mitigation businesses will actively reduce peak
energy demand. This benefit complies to the Green Star – Ene-5 Peak Energy Demand
Reduction opportunity and since harmonics inherently draw unwanted currents, harmonic
mitigation means peak energy demand reduction can be achieved. Also relevant is the fact
that harmonic mitigation will improve your total power factor (as detailed further below),
which results in reducing “wasted work”. For more information on NHP’s Green Star Solution
please contact your local NHP branch.
Displacement & Total Power Factor
The benefits of harmonic filtering are not limited to preventing equipment failure and
conforming to required industry standards, but it can also improves your total power
factor.
Total (or true) power factor includes both displacement power factor and distortion
power factor and can be defined as:
PF =
1
1 + THDI2
• cos j
where:
PF = power factor
THDI = total harmonic distortion current
Real Power
cos j =
Apparent Power
Referring to the relationship above, by mitigating harmonics, THDI decreases and hence total
PF improves. With improved power factor, inductive reactive power, (and by result current
draw), from the supply decreases and additional savings in the form of reduced tariffs may be
achieved.
Another important consideration is the harmful effects harmonics can have on capacitors,
which may be present in the load or where power factor correction (PFC) systems are utilized.
Harmonics on the supply cause a higher current to flow in the capacitors. This is
a result of the capacitors having lower impedance as the frequency increases. This increase in
current flow through to the capacitor will result in additional heating of the capacitor and will
reduce its life.
Figure 2. NHP PFC functional tray
The use of “blocking” reactors are ustilised in NHP PFC systems to protect the capacitors from
harmonics as long as THVD is less than 7%. If harmonics levels in the system are greater than
this, harmonic filters are a must for the safe and reliable operation of any
load containing capacitors.
[7]
Harmonic Mitigation Solutions
Traditional solutions to minimize harmonic distortion often involved one of the following
methods:
• Over-sizing or de-rating of the installation
• Specially connected transformers
• Series Reactors
• Tuned passive filter
However, the above solutions all presented disadvantages related to exhibiting higher utility
costs because of continued poor power factor. Today, the most common forms of harmonic
mitigation involve either:
• Passive Harmonic Filtering
• Active Harmonic Filtering
• Hybrid Harmonic Filtering
Passive Harmonic Filtering
Passive filters are series capacitor and reactor resonant circuits ‘tuned’ to present a high
impedance path to the fundamental frequency and low impedance path to higher
specific frequencies (i.e. 5th - 250Hz, 7th - 350Hz). They are more commonly connected to
individual loads in the plant rather than at the point of common coupling (PCC) since they’re
application requires consistent loading for effective harmonic mitigation.
Active Harmonic Filtering
= Harmonic waveform
= Adaptive waveform
= Sinusoidal waveform
Active harmonic filtering (AHF) is the process by which harmonic current produced by
the load is continuously monitored and an adaptive waveform is then generated which
corresponds to the exact shape of the non linear portion of the load current. The AHF
introduces this adaptive current into the load at the point of connection and the response
time of a Schaffner AHF is 300 μs. Unlike passive harmonic filters, these filters can provide
harmonic mitigation under any load conditions up to their rated capacity.
Figure 3. AHF Solution: Harmonic +
adaptive waveform results in a
sinusoidal waveform
Hybrid Harmonic Filtering
Hybrid harmonic filtering is the combination of passive and active harmonic filtering.
Hybrid harmonic filtering combines the two solutions in situations where the use of passive
harmonic filters can be used reliably for static loads of an electrical installation and a smaller
active filter can be used to mitigate harmonics generated by the other variable loads. This
solution can be both cost and application effective.
[8]
Harmonics Filtering Application
Example - VSDs
Most variable speed drives (VSD’s) operate by using a bridge rectifier to convert the
incoming AC voltage into a DC voltage. A capacitor bank is then used to filter out the AC
ripple. Insulated Gate Bipolar Transistors (IGBT’s) are used to convert the DC voltage into a
controlled voltage and frequency for speed control of the motor.
Although the drive may be of an efficient design for motor control, problems with the AC
power line can result due to the way the drive draws the AC current. One problem is due to
the fact current cannot flow from the rectifier into the DC bus before the input voltage is
greater than the DC bus voltage. As highlighted in figure 4, this only occurs for a very short
period of time for each phase. Hence, to transfer the energy required by the motor in such a
short period of time, the peak current must be high.
The input current, shown in figure 4, is non-sinusoidal and consists of two discrete pulses
per half period. This is an example of a current waveform with a high level of harmonic
distortion. Most modern electronic equipment use a bride rectifier power supply similar to
that which has been described. These equipment include computers, electronic ballasts
VSDs and many more.
Individual harmonic frequencies will vary in amplitude and phase angle, depending on the
harmonic source, which may be internal or external to the electrical installation.
Figure 4. 6 –pulse rectifiers inherently draw current in a non-sinusoidal fashion from the grid, creating a
current wave rich in harmonics. Harmonic currents flow through system impedance and create harmonic
voltages.
[9]
ECOsineTM – Passive Harmonic Filters
Schaffner ECOsineTM passive harmonic filters represent an economical solution to
the challenge of load-applied harmonic mitigation in three-phase power systems.
With features including more compact dimensions to comparable products, quick
installation and easily commissioned, the ECOsineTM range of passive harmonic
filtering offer customers the ideal passive harmonic mitigation solution.
The filters efficiently reduce the harmonic currents to negligible levels and ensure,
that a sine-wave current is drawn from the grid. In the process, they also reduce peak
currents and RMS input current, allowing for lower wire cross sections in conductors,
smaller fuses, breakers, and transformers. In existing installations, more drives can be
used on the same distribution transformer.
Schaffner ECOsineTM harmonic filters are designed for the operation on the line side of
power electronic equipment with 6-pulse rectifier front ends in balanced three-phase
power systems.
Installation: All filters from FN3410-10-44 to FN3410-110-35 are wall mountable and
must be operated vertically. The filters FN3410-150-40 and higher are designed for floor
mounting. In order to allow for sufficient air flow all filters must be clear on top and bottom
a minimum of 150 mm.
Note: ECOsineTM filters are not designed for single-phase or split-phase applications.
[10]
Passive Harmonic Filter Application
ECOsineTM filters are suitable for paralleling lower power non-linear loads on a higher power
harmonic filter to improve overall system economy. In this case the total expected load
power of all connected drives must match the filter.
Figure 5. Lower power non-linear loads in parallel with passive harmonic filter
If the expected input power exceeds the rating of the largest available filter, then two filters
can be wired in parallel. In this mode of operation, it is recommended to use filters with
equal power ratings to ensure correct current sharing.
Figure 6. Passive harmonic filters connected in parallel for larger non-linear loads.
AC line reactors and/or DC-link chokes are not required when ECOsineTM passive filters are
installed. For a new system, this helps to offset a good portion of the harmonic filter cost. If
a harmonic filter is added to a drive with an existing AC line reactor, it is recommended to
remove the reactor if possible.
[11]
ECOsineTM Passive Harmonic Filter
Selection Table
FN3410-10-44
FN3410-320-99
Rated Load
Power (kW) @
400 V AC/50 Hz
Rated Load
Current (A) @
400 V AC/50 Hz
Standby
Losses
(W)
Loaded
Losses
(W)
Dimensions
HxWxD
(mm)
Weight
(kG)
FN 3410-10-44
4
10
0.8
60
400 x 170 x 190
13
FN 3410-13-44
5.5
13
0.8
83
400 x 170 x 190
14
FN 3410-16-44
7.5
16
0.9
113
430 x 210 x 210
21
FN 3410-24-33
11
24
0.9
165
520 x 250 x 280
27
FN 3410-32-33
15
32
1.8
225
520 x 250 x 280
31
FN 3410-38-33
18.5
38
1.8
259
520 x 250 x 280
35
FN 3410-45-34
22
45
1.8
286
590 x 300 x 300
45
FN 3410-60-34
30
60
2.9
360
590 x 300 x 300
54
FN 3410-75-35
37
75
2.9
407
750 x 320 x 300
65
FN 3410-90-35
45
90
4.1
450
750 x 320 x 300
77
FN 3410-110-35
55
110
4.1
495
750 x 320 x 300
86
FN 3410-150-40
75
150
5.7
600
1000 x 500 x 450
118
FN 3410-180-40
90
180
6.6
630
1000 x 500 x 450
136
FN 3410-210-40
110
210
7.8
770
1000 x 500 x 450
154
FN 3410-260-99
132
260
8.2
792
1000 x 500 x 450
201
FN 3410-320-99
160
320
8.6
960
1000 x 500 x 450
201
Cat . No.
Part number coding
FN
Schaffner standard
filter range
Filter family
3410 = filter for
50 Hz, 380-500V
[12]
34xx - xxx
- xx
Connection Style
33 = safety terminal block 16 mm2 max
34 = safety terminal block 35 mm2 max
35 = safety terminal block 50 mm2 max
40 = safety terminal block 95 mm2 max
44 = safety terminal block 10 mm2 max
99 = copper bus bars
Rated, unfiltered load (drive input)
current [A]
External filter elements
Line terminals (3)
Cap disconnect terminals (6)
PE terminal (1)
LEDs (3)
Fan
Load terminals (3)
Monitor switch (2)
Monitoring Status
LEDs
Monitor switch
Filter state
Power off
Power on, internal temperature does not require fan
Power on, active fan cooling
Power on, over-temperature or fan error *
Power on, sensor short or monitor error
* Fan or sensor disconnection is recognised
[13]
ECOsineTM – Active Harmonic Filters
The latest in active harmonic filter technology, the ECOsineTM Active offers superior
performance with numerous advantages over traditional technology. The filters eliminate
harmonic currents up to the 50th harmonic, improving power quality and reducing
reactive power usage costs.
Some of the key features and benefits of the ECOsineTM Active include:
• Ultra-fast: Responds to disturbances in less than 300μs and eliminates
them before they can cause damage
• Super-compact: Each unit provides the highest performance in the most
compact package
• Optimised for maintenance: The central modules in the 200 to 300 A
industrial models can be removed in less than 15 minutes.
• Suitable for industrial use: With the IP54 protection class the ECOsineTM
Active is resistant to dust and other environmental influences
• Numerous Options: The ECOsineTM Active range covers specifications
from 30 to 300 A and 400 to 480 V in either 3 or 4-wire technology.
• Adaptive: ECOsineTM Active compensates for individual disturbance
patterns in a targeted manner and automatically adapts to changing
network topologies.
The ECOsineTM Active’s flexible design allows different size systems to connect in
parallel achieving greater compensation current. This is particularly useful when
considering future expansion or changes to the electrical networks which increases
harmonic levels and requiring greater harmonic mitigation current. These filters can be
connected either load or line side, however to combine units in parallel the units must be
connected load side.
Once configured with just a few clicks, the preset line current will be permanently
measured and all harmonics and phase displacements actively compensated. To achieve
this, the ECOsineTM Active calculates the appropriate compensation currents within
microseconds, which are then generated and fed into the network. Remote monitoring via
PLC or BMS is possible via Modbus over RS485 interface.
Three simple steps to improve power quality
[14]
ECOsineTM AHF Parallel Operation
The available compensation current can be increased through parallel operation of
several ECOsine™ Active units. In doing so, the current signal from the external current
transformers is looped through all the ECOsine™ Active units in accordance with the
following schematic. The current transformers must be installed on load side (between the
mains connection of the filter and the mains connection of the load to be compensated).
Up to 5 units per CT set
Phase L2
Phase L1
Phase L1
k, S1 I, S2 k, S1 I, S2 k, S1 I, S2
X2
1
2
Phase L1
load side
3
4
5
6
X2
1
2
Phase L2
load side
P2
L
3
4
5
6
X2
1
2
3
Phase L3
load side
P2
L
Phase L3
4
5
6
P2
L
P1
P1
P1
K
Phase L2
k, S1 I, S2 k, S1 I, S2 k, S1 I, S2
K
K
mains side
Figure 7. Current transformer wiring for parallel operation of up to five ECOsineTM Active
NOTE: A maximum of five ECOsine™ Active may be operated on one current transformer
set due to the maximum power output of the external current transformers. Additional
current transformers must be installed if more than five devices are to be operated in
parallel. For parallel operation of more than one ECOsine™ Active the current transformers
must be installed on load side of the filter.
[15]
ECOsineTM Active 30/50A (3 wire)
– The compact and easy-to-install filter
ECOsineTM Active 30/50A
The smallest ECOsineTM Active version is ideal for the reliable compensation up to the
50th harmonic, as well as reactive power, in a targeted manner. Due to its compact
dimensions and low weight, this filter can be easily installed in any environment. Both wall
and cabinet installations are possible offering IP 20 protection as standard with IP 54 optional.
Not only space-saving, it is also economical in terms of power loss with only 1300 W. With a
response time of under 300 μs in ultra-fast mode, it is also possible to optimally compensate
dynamic loads. A higher power level can be easily attained by paralleling up to 5 units.
ECOsineTM Active 30/60A (4 wire)
– The solution for building technology
This ECOsineTM Active version mitigates harmonics on all three phases as well as the neutral
wire and is particularly useful for the reliable compensation of the triple harmonics up to
the 50th order. This compact package is the ideal system for commercial type installations
where switch-mode power supplies and information technology equipment are common
sources of harmonic generation.
ECOsineTM Active 100A
ECOsineTM Active 100/120 A
– The standard for 3 and 4 wire technology is always the perfect fit
Only marginally larger and heavier than the 30/50 A system, the 100 A unit can deal with twice
the current. It is the perfect solution for those who need greater performance. The 4 wire unit
also allows for compensation on the neutral conductor.
ECOsineTM Active 200/250/300A
– The industrial model is a real power pack
ECOsineTM Active
200/250/300A
[16]
With up to 300 A of compensating current, this filter remains fully capable for the highest
requirements such as large production facilities, like those found in the automotive industry.
The cabinet version comes with forced air cooling, as well as internal liquid cooling for the
power electronics including an integrated water/air heat exchanger. These powerful units are
available in either 3-wire or 4-wire units and come with a protection class of IP 54.
Minimal time-to-repair thanks to a modular design
(MTTR <15 minutes).
The ready-for connection industrial cabinet unit is modular in design with each
individual module easily accessible and removable from the front of the cabinet.
An MTTR value of <15 minutes with an MTBF value of up to 100,000 hours provides
for the fastest service times and long maintenance intervals
Control elements are easy to remove
Integrated heat exchanger
(water/air)
Control elements (controller) with
a well-lit, energy saving display
and large range of view
Filter unit
Modules (filter unit and power
element) can be released from the
front with just a few bolt/plug
connections
DC bus with power semiconductors
Forced air cooling
Fuse block (fuses can be individually
removed from the holder)
Self-sealing hydraulic quick
disconnect
Liquid cooling can be disconnected
quickly and without any spilling
using quick-release couplings
ECOsineTM Active provides:
• Reliability: Eliminates all relevant disturbance patterns in the power lines
• Cost-savings: Avoids/reduces wear on electrical loads and over-heating of cables
and transformers
• Efficiency: Prevents losses due to production downtimes
• Flexibility: Constantly adapts to the network topology
• Fast response time: Compensates disturbances before they can cause damage
• Economy: Lowers energy cost through reduced reactive power demand
• Compact dimensions: Requires very little space compared to traditional solutions
• Ruggedness: Provides protection according to IP 54
• Effortless: Simple installation and intuitive operation.
Modules can be popped out towards
the front
[17]
Part number coding
FN
34xx
xxx - xxx -
x
3 – 3 wire systems
4 – 4 wire systems
Schaffner standard
filter range
Filter family
3420 = 3 wire active
filter for 50 Hz
3430 = 4 wire active
filter for 50 Hz
System Voltage
Rated compensation
current [A]
Examples
FN 3420 – 50 – 480 – 3: Filter for 50 Hz, 480V, 50 A input current for 3 wire systems
FN 3420 – 250 – 400 – 4: Filter for 50 Hz, 400V, 250 A input current for 4 wire systems
Recommended External AC mains
protection
External fuse
Device
(cable protection fuses, e.g. type gL/gG)
ECOsineTM Active -30-xxx-x
50 A
ECOsineTM Active -50-480-3
80 A
ECOsineTM Active -60-400-4
100 A
ECOsineTM Active -100-xxx-x
160 A
ECOsineTM Active -120-xxx-x
200 A
Note: Internal 400 A fuse block supplied with ECOsineTM Active – 200/250/300-xxx-x
[18]
ECOsineTM – Active Harmonic Filters
FN 3420-..
3-wire
..-30-480-3
..-50-480-3
-
..-100-480-3
..-120-480-3
..-200-480-3
..-250-480-3
..-300-480-3
FN 3430-..
4-wire
..-30-400-4
-
..-60-400-4
..-100-400-4
..-120-400-4
..-200-400-4
..-250-400-4
..-300-400-4
Rated comp.
current
3-wire
30 A
50 A
-
100 A
4-wire
30/90 A
-
60/180 A
200 A
200/600 A
250 A
250/750 A
300 A
300/750 A
75 A for 10 ms
125 A for 10
120 A
100/300 A
120/360 A
16 kHz
Switching frequency
Overload capability 1)
Cooling type
150 A for 10ms 250 A for 10 ms
Forced air cooling
30 º C 3)
40 º C 3)
Ambient temperature
Forced air cooling (internal liquid cooling)
40 º C
Parallel operation
Noise level
(1m)
40 º C 3) (FN3430-300-400-4 is 0-30oC 4))
Modbus RTU (RS485), Modbus TCP/IP (Ethernet)
3-wire
< 900 W
< 1300 W
-
< 2200 W
< 2500 W
< 5000 W
< 6000 W
< 7500 W
4-wire
3-wire
< 950 W
-
< 1800 W
< 3000 W
< 3000 W
< 5500 W
< 6300 W
< 8500 W
65 dBA
65 dBA
-
68 dBA
68 dBA
70 dBA
70 dBA
70 dBA
4-wire
63 dBA
-
63 dBA
69 dBA
69 dBA
70 dBA
70 dBA
70 dBA
Filter performance
Up to the 50th order
Altitude
Mains Voltage
30 º C 2) 3)
Up to 5 units
Interfaces
Power loss
250 A for 10 ms 500 A for 10 ms 625 A for 10 ms 750 A for 10 ms
1,000m / de-rating up to 4,000m, 1% / 100m
3-wire
380V (AC) ± 15% … 480V (AC) ± 10%
380 (AC) ± 15% … 415V (AC) ± 10%
4-wire
380V (AC) ± 15% … 415V (AC) ± 10%
380 (AC) ± 15% … 415V (AC) ± 10%
47 to 63 Hz
50 Hz ± 5%
Mains frequency
Response time
300 µs
Controller topology
Digital with FFT analysis
Current limitation
Normal Current
Current transformer
100 : 5 to 5000 : 5
Dimensions
(w x h x d)
(mm)
3-wire
360x590x290
360x590x290
-
468x970x412
468x970x412
4-wire
415x840x300
-
415x840x300
468x1460x412
468x1460x412
Weight
3-wire
47 kg
47 kg
-
105 kg
105 kg
415 kg
415 kg
415 kg
4-wire
70 kg
-
70 kg
145 kg
145 kg
495 kg
495 kg
495 kg
Protection class
Approval
1)
Peak Value
2)
Derating up to 40°C, 1.2%/K
3)
Derating up to 50°C, 2%/K
4)
Derating up to 40°C, 1.7%/K
Standard IP20, optional IP 54
800x2000x600
Height plus socket (200 mm standard),
depth including heat exchanger 760 mm
IP 54
C - tick
For more information on Harmonic Filters please contact your local NHP branch
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