Mirus International Inc.

United States

The LINEATOR Advanced Universal Harmonic Filter (AUHF) is a revolutionary advancement in the area of passive harmonic mitigation. No other device on the market can meet the stringent limits of IEEE Std 519 at an equivalent efficiency, size and cost. When your application calls for a truly cost effective harmonic solution, the LINEATOR AUHF is the logical choice. It provides Engineers with a standard off-the-shelf solution for what used to be a very challenging engineering problem. The LINEATOR is a purely passive device consisting of a unique inductor combined with a relatively small capacitor bank. It's innovative design achieves reduction of all the major harmonic currents generated by VSD's and other similar 3-phase, 6-pulse rectifier loads. The resulting ITHD is reduced to

Passive Harmonic Filter for 3-phase VFD's Operating on a 1-phase supply In remote locations such as farms, golf courses, oil and gas fields and residential areas standard 3-phase Variable Speed Drives are often used as Phase Converters to supply 3-phase motors when only 1-phase power is available. The Lineator 1Q3 is ideal for systems such as water and waste water, pump jacks, irrigation and many others. The Lineator-1Q3 has been designed to address this application by accepting 1-phase input and supplying a quasi 3-phase supply to the VFD. This will significantly lower both input harmonic current distortion (by up to 10x) and DC ripple current within the VFD. Reducing the ripple current allows for less derating of the VFD which, in many cases, will offset the cost of the Lineator-1Q3. For more information on the Lineator 1Q3, please contact your local Mirus representative.

For extreme environments, such as excessive background voltage distortion (5% to 12% VTHD), high ambient (up to 55 C) or high elevation (above 3000 ft), Mirus now offers an extreme duty model for its Lineator AUHF. Our standard Lineator AUHF already outperforms any other competitive filter by guaranteeing performance when background voltage distortion is as high as 5%. In some applications however, such as marine vessels, drilling rigs and oil fields equipped with electrical submersible pumps (ESPs), existing voltage distortion levels will often exceed 5%. Also, when ambient temperature levels exceed 40 C or at higher elevations where the air is thinner, a more robust filter is required. The Lineator-ED model will meet this challenge.

The use of 6-pulse Variable Speed Drives and other static power conversion equipment has grown rapidly in recent years. With this growth has come concern over the level of current harmonics generated by such equipment. Harmonic currents and the voltage distortion these currents create can have devastating effects on a power distribution system and its connected equipment. Present methods of harmonic treatment on low voltage 6-pulse VFD applications where the VFD voltage rating is different from the service voltage, require a special replacement 18-Pulse VFD, or a separate transformer to match the existing 6-Pulse VFD voltage along with tuned passive filters, or expensive active filters. The innovative AutoTranslineator is the best advance in the area of low voltage passive harmonic mitigation available today. No other device on the market can meet the limits of IEEE STD 519 at an equivalent size, efficiency and cost. When the application calls for harmonic treatment for low voltage 6-pulse VFD applications where the VFD voltage rating is different from the service voltage, the AutoTranslineator is the only logical choice.

ULLTRA High Performance transformers are designed to deliver more energy savings than any other transformer on the market. The result is a high performing transformer that offers the highest efficiency in the industry under either linear or non-linear loading and maintains these high efficiency levels at not only 35% loading, but over the entire load range. While other energy efficient transformers on the market may meet new, more demanding standards such as NEMA Premium and CSL3, these standards only restrict losses under linear loading and at 35% load levels. When it comes to higher load levels and non-linear loading, other transformers on the market cant offer the same high efficiencies under these conditions. ULLTRA High Performance transformers actually exceed NEMA Premium efficiency levels at their peak performance loading of 50%, thereby assuring the most energy savings under any loading.

GENLINK DPNL is a multiple winding reactor that, when installed in the common neutral of paralleled sources either between the dissimilar generators or the generator and the utility supply, can greatly reduce the neutral circulating currents that result from the instantaneous voltage differences. These neutral circulating currents, which are predominantly triple frequency, have the potential to cause a considerable amount of damage with respect to overheating generators and causing false-protection trips. Voltage differences in paralleled generators made by different manufacturers or differences in standard pitch design configurations in generators made by the same manufacturer can result in heavy neutral circulating currents. Additionally, alternative energy sources such as solar and wind power that generate AC power can introduce heavy circulating currents in 4-wire parallel applications. When applied, GENLINK will impede the flow of circulating currents while adding only minimal impedance to the fault current path.

The Lineator High Performance (HP) model is used where the highest power quality demands must be met. Lineator HP outperforms active filters in efficiency, with gains of 2 per cent or more. It is more reliable and easier to maintain than any of the complex AFE drives or active filters currently available. Specifying the Lineator HP for applications with standard 6-Pulse ASD's provides end-users with low harmonic drive systems at 20 to 30 per cent less in capital costs than other solutions. Operating costs are also significantly lowered due to the higher efficiency gains. In addition to all the benefits of the Lineator AUHF, the new High Performance HP model offers < 5% ITDD. With the addition of a tap to allow for reactor impedance adjustment, current distortion levels of < 5% can be achieved without introducing excessive voltage drop or ASD instability.

Phase shifting isolation transformers and autotransformers designed to produce cancellation of the characteristic harmonics of 3-phase rectifiers to produce effective 12-pulse 18-pulse, and 24 pulse schemes.Designed to replace standard drive isolation transformers, the Drive Tamer is built to not only withstand the harsh harmonic environment produced by Variable Frequency Drives (VFD), but to also induce cancellation of harmonics upstream and thereby reduce voltage distortion throughout the distribution system. By alternating 0 phase shifting models with 30 models, 5th and 7th harmonics are cancelled upstream. Where 3 loads are being serviced +20 , 0 , -20 models can reduce 5th, 7th, 11th and 13th harmonics, thereby dramatically reducing the voltage distortion these harmonics produce.

HARMONY SERIES isolation transformers and autotransformers combine very low zero sequence impedance outputs with phase shifting for effective harmonic mitigation. They are designed to replace standard or k-rated transformers, especially when servicing single phase (120V L-N) non-linear loads, such as personal computers and other power electronic equipment.

A 3-phase, low zero sequence impedance autotransformer, which when connected near to and in parallel with the harmonic generating non-linear loads (usually connected at the distribution panel), provides an alternate path for 3rd, 9th, & 15th current harmonics (triplens) which the loads create. Patented Field Adjustable Impedance (FAI) feature allows for adjustment of NCE zero sequence impedance to field conditions. Reduces neutral current and neutral-to-ground voltage as well as both current and voltage triplen harmonic distortion.