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Nantech, one of the best UPS manufacturing companies in Chennai, we are also the Enterprise Business Partner of Vertiv Power Products formerly known as Emerson Network Power. We deal with Liebert Emerson Active Harmonic Filter.
Emerson Active Harmonic Filter dynamically cleans up harmonics and improves the power factor for all types of electrical installations. It has dynamic control features and has no resonance effects, no reactive power circulation and no passive components. Our professional installation style will suit any business immaterial of the size of the operation.
Liebert AF3 uses the latest technology to eliminate harmonics that are injected into the mains supply by nonlinear loads, as well supplies inductive power demanded by the load, so as to correct input power factor to near unity.
One way to meet the new requirements is to simply reduce the harmonics to an acceptable level.
Many modern active harmonic filters can pinpoint the harmonic orders and the compensation power can be optimized to meet the requirements in the most cost efficient way. The modern Active Harmonic Filter is one of the most efficient harmonic solutions in the market today.
Filters are commonly available in 208 – 480V version and 480 – 690V. The Active Harmonic Filter can be combined with 6 pulse drives and will be placed in parallel with the load, minimizing the need of compensation power to be at 20 – 30 % of the load.
The parallel placement will also ensure the redundancy in the design, which is a major advantage in case of critical applications. Modular solutions, which are now more commonly available gives a dynamic and agile solution to work for future improvements to the existing machinery. Our ranges are 30A, 60A, 100A, 150A, 200A, 300A.
The standard practice is to connect active harmonic filters in parallel with the load. You can also turn off or replace the filter without affecting the loading process.
Yes, active harmonics can handle upto 20 modules in parallel connection. A parallel-connected AHF system only needs a single set of Current Transformers (CTs) You will require standard network cables to connect the two modules in parallel.
The Active Harmonic Filter, when connected to the main electrical supply, uses its current transformers (CTs) to identify any residual system’s harmonic currents. After detection, the AHF applies a compensatory current to the main electrical supply in order to diminish these harmonic currents to a degree that aligns with the IEEE 519 standard at the main electrical supply points.
In these cases, the AHF will restrict its harmonic cancellation current output to a safe level rather than eliminating the excess harmonic currents. Subsequently, the system’s THDi increases and prevents the filter from failing or overloading.
Yes, it is possible to simultaneously install AHF and PHF on certain non-linear load systems. This setup is called a hybrid solution and is applicable in various settings. Power Harmonic Filters (PHF) help reduce the harmonic currents generated by specific electrical devices connected to them.
When the Active Harmonic Filter is installed alongside the main electrical supply, its current transformers (CTs) detect any remaining harmonic currents in the system. The AHF will then add a corrective current to the main electrical supply to reduce these harmonic currents to a level that meets the IEEE 519 standard at the main electrical supply points.
Yes, they can compensate for reactive power and filter harmonics to enhance the power factor as a secondary benefit. In fact, some Active Harmonic Filters are exclusively designed for harmonic filtration and power factor correction.
AHFs contribute to energy efficiency by minimising harmonics-associated losses, such as increased heat in motors and transformers. They also enhance the overall performance of electrical equipment.
Of course. AHFs are very compatible with 3-level inverters as opposed to 2-level inverters thanks to these advantages:
Harmonic filter maintenance differs according to the type of filter and the application it is used for. Generally, like all electrical equipment, harmonic filters also require regular maintenance and inspection to ensure optimum performance. It is also essential to inspect and test the filter to identify and address impending issues.
We had availed the services of “NANTECH POWER SYSTEMS PVT LTD” and their service was excellent. Their rates were competitive when compared to others. They have discharged their services in professional manner. We appreciate the timely delivery (at a time, convenient to us) of the battery for the UPS at a very competitive rate.
We purchased UPS from Nantech for most of our systems and they are all working as expected. Their after sales service is exceptional and was the primary reason why we did not have any inhibitions in taking an AMC with them. Keep up the good work!
Nantech Power Systems Pvt Ltd,
17a, 2nd Cross Street,
Sastha Nagar, Valasaravakkam,
Chennai ‑ 600087.
