MIRUS Lineator Harmonic Filter

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UNIVERSAL HARMONIC FILTER

Energy Efficient, 18-Pulse Performance
From Standard 6-Pulse Variable Speed Drives

OVERVIEW

The LINEATOR ™ is a purely passive device consisting of a revolutionary new inductor combined with a relatively small capacitor bank. It's innovative design achieves cancellation of all the major harmonic currents (including AM Band RFI) generated by VSD's and other similar 3- phase, 6-pulse rectifier loads. The resulting THID is reduced to < 8% and often as low as 5%. Although referred to as a filter, the LINEATOR™ exhibits none of the problems that plague conventional filters. Once the advantages of the LINEATOR™ are realized, it may replace the recognized 18-pulse VFD market.

ADVANTAGES

Presents a high impedance to line side harmonics eliminating the possibility of inadvertent importation and overloading capacitor.
Even under no load conditions, the capacitive reactance (KVAR) of the LINEATOR ™ remains below 15% of its kVA rating ensuring compatibility with engine generators, without the need to switch out capacitors.
Natural resonance frequency is below that of any predominant harmonic, therefore inadvertent resonance is avoided.
Reduces current distortion to < 8% and often achieves levels near 5% THID at full load.

FEATURES

Highly efficient, simple core design
Treats all major harmonics generated by Variable Speed Drives and other 3-phase rectifier loads (5th, 7th, 11th, 13th …)
Easily applied to input of a single VSD - no need for costly harmonic studies
Suitable for application on multiple VSD's provided only VSD's are connected
Will meet IEEE 519 standard for both current and voltage distortion
Input current demand distortion < 8% over entire operating range
Power factor 0.98 lagging to 0.95 leading over the normal operating range
Compatible with engine generators since capacitive reactance is < 15% of rated kVA even under light loads
Will not resonate with other power system components or attract line side harmonics
Suppresses overvoltages caused by capacitor switching and other fast changing loads
Eliminates need for drive isolation transformers, AC line reactors and DC link chokes
Removal of harmonics improves overall system power factor
Saves energy by reducing upstream harmonic losses while operating at > 99% efficiency
Reduces RF Interference generated by VSD