It covers ac electrical drive systems rated 600 volts or less
December 18, 2015
The National Electrical Manufacturers Association (NEMA) has announced the publication of NEMA ICS 7.2-2015 Application Guide for AC Adjustable Speed Drive Systems. This guide assists users in proper selection and application of alternating current (ac) adjustable speed drive systems.
Blower motor breakdown can be the result of anything from old age to failed bearings, high amp draw, electrical failure in the windings, dirt accumulation, and more. Knowing how to troubleshoot and diagnose problems with these motors is an essential skill an HVAC technician must possess.
As the popularity of variable-speed technology increases, many manufacturers are bringing new products to market to meet consumer and OEM demands. Here are a few of the latest HVAC motor-related products available on the market.
While older circulator pumps utilized single-speed motors and were largely inefficient, advances in motor technology, controls, and pump design have transformed the market and ushered in a new era of highly efficient products that feature variable-speed motors, easy installation and setup, remote connectivity, and more.
DOE recently amended Section 431 of the federal energy code covering the efficiency of electric motors
November 20, 2015
The National Electrical Manufacturers Association (NEMA) Motor & Generator Section will host a second series of webinars in December related to the U.S. Department of Energy’s (DOE’s) motor regulation, which will take effect on June 1, 2016.
Q-Sync Smart Synchronous Motor designed to provide energy savings in retrofits
November 2, 2015
The Q-Sync Smart Synchronous Motor represents a new class of energy efficient motors that are designed to reduce energy consumption while improving the power quality and reliability of fan motors, according to the manufacturer, QM Power.
Using variable frequency drives (VFDs) to control the speed of a compressor can provide improved occupant comfort and quieter operation in air conditioning and heat pump applications. Always consult with the specific compressor manufacturer before using a VFD controller on any compressor.