POWER QUALITY INTERNATIONAL, INC. is uniquely qualified to assist facility owners, managers, and their engineering professionals with the reduction of power system and load losses and efficiency improvement. We’ve been providing unique engineered solutions for more than forty years.
With our power system engineering and transformer design ‘know how’, in 1986, PQI was first to develop and apply electromagnetic filters that shunt zero-sequence harmonic currents. Building on this technology, in 1990, we were first to develop and apply harmonic mitigating transformers that shunt zero-sequence harmonic currents with ultra-low zero-sequence impedance windings and cancel positive- and negative-sequence harmonic currents.
Our harmonic mitigating transformers exceed the energy efficiency requirements of NEMA Standard TP1-2002 and CSA Standard C802.2-00, under the nonlinear load conditions for which they were designed. PQI was also first to apply transformers that exceed the US Department of Energy’s Candidate Standard Level 3 efficiency requirements. These designs were developed by the e-Rated Transformer Corporation.
Whether the loads are linear or nonlinear, our objective is to engineer electrical distribution systems that are compatible with their loads and energy efficient. The application of our electromagnetic products will produce the most attractive payback and return-on-investment in the industry. We offer the PQI Solution™ with guaranteed power quality outcomes and an increase in our standard warranty from 10 years to 20 years.
To resolve all of the issues that normally result from a non-mitigating ‘conventional design’, the Design Objectives must include:–Harmonic Current Control,–Voltage Distortion Reduction (<5% THDV),–Neutral – Ground Voltage (<4V)–∆Neutral – Ground Voltage Reduction (<2V),–Capital Cost Reduction and–Operating Cost Reduction.
These goals are detailed in a ‘Harmonic Mitigation Specification’, which is available from PQI for inclusion in the ‘General Requirements’ of an engineer’s electrical specification.
A system Study is completed for the existing or proposed ‘conventional design’ and all ‘harmonic mitigating design’ alternatives. The study, which is based on information provided by the engineer, includes a detailed analysis of the system’s performance, power quality and costs.
The Mitigation Proposal includes a detailed summary of PQI product application sites, ratings, models and budgetary estimates. A proposal may also include the application logic, product specifications, connection diagrams, engineering notes and recommendations, regarding system revisions, operation and loading.