A variable frequency drive is an electronic device that allows you to start, stop, and control the speed of a three phase motor. It is also a motor starter as it is equipped with overload protection. Read more »
What is the difference between a 'new surplus' motor and a 'factory new' motor?
Our New Surplus electric motors and drives are new and unused overstock or discontinued items offered at lower prices and come with our 90-day warranty.
Factory New products are competitively priced and come with a manufacturers warranty.
Variable frequency drives (VFDs or inverters) now play an important part in major industry.
Within the last 10 years they have been perfected to control and vary the speed of 3 phase electric motors. They serve many purposes, besides speed control. Homeowners and hobbyist alike, who have lathes or milling machines with a 3 phase motor, usually don't have 3 phase power to operate. These VFDs (instead of using a rotary phase converter) can now be used to convert single phase power to 3 phase power. Read more »
WEG, a leading supplier of drive technology, as well as automation solutions,
has enhanced the line of variable frequency drives for heating, ventilation, air
conditioning and refrigeration. The CFW701 was designed with the features
and functions required for HVAC systems, with the same reliability, robustness
and energy-efficient control known in our industrial lines. WEG now brings this
technology to hospitals, airports, office buildings, hotels, shopping centers or
other similar facilities.
Features
Factory new with 18 month manufcturer's waranty
Input Voltage: Three-Phase 380-480 Vac with Dynamic Braking Transistor
It is possible to monitor heat sink and inside air temperature thus ensuring
protection to critical components e.g. IGBTs and control board
Fans installed closed to heatsink are controlled based
on the temperature of power modules
Readings of fan operation hours can be analyzed through parameters and
alarm or fault messages are displayed
Easy removal of fans for easy maintenance and/or replacement
Applications
Hospitals
Malls
Schools and Universities
Commercial buildings
Airports
Stadiums
Hotels and Restaurants
Residential
Compressors
Evaporators
Boilers/Chillers
Pumps and Fans
Condensers
Cooling towers
Notes:
Sizing the drive
The correct way to select a VFD is to
match its output current with the motor
rated current. However,
this listing also presents the expected motor
horsepower for each VFD model. Use the
motor power ratings only as a guide. ALWAYS compare motor FLA to Nominal AMPS of drive.
Motor rated currents may vary with speed
and manufacturer. IEC motor powers are
based on WEG 4-pole motors, NEMA
motor powers are based on NEC table
430-150.
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