A harmonic filter reduces harmonic currents and voltages produced by machinery and equipment connected to an electrical system.
Most such filters are used to eliminate harmonics produced by frequency converters. These variable speed controls reintroduce powerful currents into the electrical system, exacerbating wear on other devices. They also reduce transformer efficacy, necessitating the use of oversized units. In general, this problem affects non-linear loads, including switched mode power supplies using power semiconductor switching, lighting and devices producing electric arcs.
Passive filters are LC circuits tuned to the undesirable frequencies to be eliminated. These are even multiples of the fundamental line frequency. Several LC circuits can be installed in parallel to eliminate different harmonics. They are used in high-power situations and can correct the power factor by reactive power compensation.
Active filters are used with low-voltage systems. They introduce a compensation current that is the inverse of the undesirable harmonic. Hybrid filters combine the two approaches.
Choice will depend on the power of the device producing the distortion. For a frequency converter, a three-phase passive or hybrid filter is the usual choice.
- Energy efficiency
- Equipment protection
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Harmonic passive filter 380 - 690 V, 324 - 370 A | VLT® AHF 005 & AHF 010 Danfoss VLT Drives
The Danfoss AHF 005 and AHF 010 are advanced harmonic filters not to be compared with traditional harmonic trap filters. The Danfoss harmonic filters have been specially...
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Three-phase harmonic filter reactor max. 145 kV Alstom Grid
Air Core Reactors (ACR) provide a linear response of impedance versus current that is essential to numerous applications. The dry-type construction is maintenance free and environmentally friendly. Main Characteristics...
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Harmonic active filter AccuSine Schneider Electric - Electrical Distribution
A complete solution for harmonic filtering that meets every harmonic standard around the world Can be operated as a displacement power factor correction device independent of or in conjunction with harmonic mitigation Provides cycle-by-cycle...
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Harmonic passive filter for harsh environment 4 - 200 kW | FN 3416 ECOsine™ SCHAFFNER EMC
Up to 50 % smaller filter design, ideal for MCC integration Robust filter topology for harsch...
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Harmonic active filter 415 V | AHF CG Power Systems
ACTIVE HARMONIC FILTER (AHF) Product Overview AHF is used for centralized harmonic suppression in a power system. AHF is an IGBT based power electronics device. It uses IGBT...
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Harmonic filter 45 - 65 Hz | COMBILINE Harmonic Filter KEB
KEB COMBILINE Harmonic Filter The low-frequency harmonics resulting from B6 rectifier switches pose an increasing burden on public grids and must be limited with expensive and cumbersome compensation facilities. The...
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Absorption filters are used when the main purpose is not the reactive power compensation at the fundamental frequency but the reduction of the TDH in the network distribution system. Harmonic...
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Three-phase harmonic filter reactor 0.75 - 300 kW, max. 600 A | LR series CIRCUTOR
Reference P70312 Type LR Motor...
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Three-phase harmonic filter reactor 3 x 400 V, 50 Hz Muuntosähkö Oy - Trafox
The choke types are iron core or air core. The benefits of the iron core chokes are small dimensions and low magnetic stray field. The basic design equals the design of single and three...
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Harmonic passive filter 10 - 280 A | FINHRM FINMOTOR
FINMOTOR's harmonic filter range, FIN HRM, guarantees a reduction in harmonic distortion to levels below 10%, on request it is possible to have products made with higher attenuation. Thanks to a particular...
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Three-phase harmonic filter reactor max. 3 000 A Ruhstrat GmbH
Ruhstrat reactors are developed, manufactured and tested in accordance with relevant EC directives,...
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Three-phase harmonic filter reactor max. 36 000 V Allis Electric
Reactor Description The reactor represses the high and middle harmonic and limits the input current or short current in order to protect...
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Three-phase harmonic filter reactor 200 - 690 V, 50 - 60 Hz | SRT - HRT ARTECHE Group
Reactors (Type SRT and Type HRT) 200-690 volts 50/60hz Line / Load reactors are electrical inductors that allow 50hz and 60hz current to flow easily in an electrical circuit, but they impede the flow of higher frequencies (such...
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Three-phase harmonic filter reactor 230 - 400 V, 3.5 - 37.50 kVAr Condensadores Industriales
Characteristics Protection IP00 Standards = IEC60289 (UNE20-144) Electric choke protection = class H Overvoltage factor p=7% Resonnance...
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Harmonic active filter 30 - 300 A | Swan+ CHLORIDE POWER PROTECTION
ndustrial and Commercial applications are making increasing use of large numbers of PCs, Servers, UPSs, AC / DC drives, Rectifiers, Chargers, SMPS, Energy saving CFL lamps, etc. These sorts of equipment draw current which is non-sinusoidal in nature, which categorises them as...
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Harmonic active filter PQFI-PQFM-PQFK-PQFS ABB High Voltage Products
ABB PQF active filters are the ultimate answer to tough Power Quality problems caused by harmonics, load unbalance and reactive power demand. ABB PQF active filters can be applied to small, medium or large applications and are suitable for both industrial...
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Low-pass harmonic filter 250 - 440 VAC, 16 - 200 A | A11x47 series Tesch
Mains filter for 3-phase systems Contact-safe terminals Frequency response adjusted to frequency converter Harmonic wave content Foil capacitors with self- sealing features Mains filters function as a low- pass: The low mains frequency of 50 or 60 Hz can pass through, high frequency interference is attenuated. Fast switch-on processes, e.g. as caused by thyristor switches,...
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Harmonic filter 208 - 600 V, 107 - 4 288 W | B series MTE
MTE Matrix Filters solve the problem of harmonic distortion on virtually any kind of six pulse rectifier. These power supplies are commonly found in three phase electronic equipment such as adjustable speed motor drives, welders, battery chargers, servo drives and other equipment. Harmonics...
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Single phase harmonic filter reactor 2.5 - 70 A, max. 9.8 mH | RI series A.I.G.E.R.
Reactors • Reactor built according to UNE 61558-2-20. • Class H (180º) winding and isolating Class F (155º), 3KV voltage test against mass. Electrical shocks protection Class I. •...
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Three-phase harmonic filter reactor 400 V, 12.5 - 50 kvar | RA series Enerlux
Three-phase harmonic block REACTOR with high linearity, designed and sized for a high harmonic load and tuned to the capacitors. The RA-type Reactors ensure a lengthy service life, extremely...
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Low-pass harmonic filter with surge protection max. 45 kA, 120 - 240 V | STFE Elite series SolaHD
Active Tracking® Filtering with Surge Protection. DIN Rail Mount. The DIN rail mounted STFE Elite Series combines Active Tracking technology with UL Listed surge protection to...
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Harmonic filter 10 - 160 kVA, IP20 | C10D, C22D series POLYLUX
C10D/C22D - Harmonic filter compensator for office buildings C10D and C22D Type C10D and C22D. Technical characteristics - Isolation Class H - 180ºC - Winding Class HC - 200ºC - Cover In metal enclosure, epoxy polyester painted - Filtering of harmonics coming from the load 3, 5, 7, 9, 15,...
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Single phase harmonic filter reactor Trench Group
Filter Reactors Some filter applications require a Q-factor which is very much lower than the natural Q of the reactor....
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Three-phase harmonic filter reactor 230 - 440 V, 2.5 - 100 kvar RTR Energía
Three phase harmonic filters Voltage...
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Three-phase harmonic filter reactor 2.5 - 75 kvar, 400 V | multiind MKS Technology
Power from 2.5 to 75 kvar High linearity, low power...
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Three-phase harmonic filter reactor IP00 Trafotek Oy
If an electric grid consist of a large amount of certain harmonics, like...
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Harmonic passive filter 6 - 97 kvar, 12 - 256 kW | FA series COMAR CONDENSATORI
The FA type filters, are designed to reduce the presence of non- sinusoidal currents, generated by U.P.S.,...
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Harmonic passive filter 10 - 75 A | NF-HPHF series EP Antriebstechnik
Harmonic Filter 10 A to 75 A Reduction of...
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Harmonic filter 10 - 144 A | HF1K series Block Transformatoren-Elektronik
Harmonic Filter HF1K General Data Rated voltage 3 x 400 Vac Rated...
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Harmonic filter ENTES Elektronik Cihazlar İmalat ve Ticaret A.Ş.
ENTES Harmonic Filter Reactors are used in serial connection with capacitor banks in power factor...
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Three-phase harmonic filter reactor 2.5 - 50 kvar, 189 Hz FRAKO
series resonance frequency 189Hz (-P7) harmonic...
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Harmonic filter Janitza Electronics
The AHFI is a modern, universally usable active harmonic filter for the reduction of harmonics...
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Single-phase double stage power EMI/harmonic filter DC - 60Hz, 3 - 10 A | RP500 Series Radius Power
RP500 Series EMI/Harmonics Dual Stage Power Line RP500 EMI/HARMONICS TO 10A CHASSIS MOUNT...
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TWT amplifier with harmonic filter 10 W, 0.8 - 18 GHz | 10ST1G18A AR Worldwide
The Model 10ST1G18A is a self contained, forced air cooled, broadband hybrid solid state and traveling wave tube (TWT) microwave amplifier designed for applications where low harmonic content is required in sub-band ranges and where high gain and moderate power output are required. A reliable amplifier system that provides a conservative 10 watts minimum at the amplifier output connector with low...
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Harmonic filter power factor compensator (PFC) 0.75 - 38 kV GE Digital Energy
Metal Enclosed Harmonic Filter Banks should be considered when power factor correction is desired in a harmonic environment. The filter bank consists of an enclosure containing power factor correction capacitors connected in series with iron core harmonic compensated reactors. The resonant frequency of the...
