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In HVAC VFDs, Is 2-Contactor Bypass Really Better than 3-Contactor Bypass?

when all is said and done, neither design is inherently “safer” than the other

Regenerative solutions

Make the right choice to drive electrical efficiency.

Top Tips: Understanding and Using Matrix Drive Technology

These tips will help you explore the latest innovation in variable frequency drives in an easy to read manner.

Matrix drive benefits for managing drive harmonics

Trap filters are a common solution for managing drive harmonics, but matrix drives can provide additional benefits for the user without the need for peripheral equipment and costs.

Smart VFDs for a Smart BACnet Network

A building automation system (BAS) is only as smart as the devices that are connected to it.

The Fundamentals of Matrix Variable Frequency Drive Technology

Providing cost, space, and energy efficiency for VFD applications.

Presentation: Variable Frequency Drives (VFDs) and Harmonics in HVAC Applications

Presentation covers the basics of design of conventional variable speed drives and the newer matrix design and their differences with regard to harmonics. The advantages and disadvantages of various means of harmonics mitigation along with the requirements of IEEE 19-2014.

Z1000U Matrix Drive Named Winner of Product of the Year Award

Z1000U Matrix Drive has been named the winner of the 2016 Consulting-Specifying Engineer’s "Product of the Year Award".

How to Handle Imbalances from Light Loads on VFDs

Input current imbalances happen when a variable frequency drive (VFD) with a full-bridge rectifier operates under lightly loaded conditions.

Project profile: Chillers retrofit at office buildings

Prepackaged chillers retrofit cut energy costs by 30% and reduced required maintenance and extending operating life at Duke Realty Corp.’s 19-story office building in Clayton, Mo.

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