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 »
3600, 1800, 1200, 900 RPM Normally in Stock. Slower Speeds Available on Special Order.
Weather Protected Type I Enclosure (IP23 rating)
Energy Efficiency Design
Factory New with Manufacturer's Warranty
60 Hz, 2300/ 4160V
Standard with 120V Space Heaters Terminated in Separate Auxiliary Box
Standard with 100 Ohm Platinum Stator RTDs, 2 per Phase, Terminated in Separate Auxiliary Box
1.15 Service Factor - Continuous (1.0 when operated with a VFD)
Class F Insulation with VPI Treatment of Solventless Epoxy Varnish
Class B Temperature Rise
NEMA Design B Torques
Oversized Fabricated Steel Main Conduit Box Rotatable in 90 Degree Increments - Fully Gasketed with NPT Threaded Entrances - F1 Mounted.
Bi-Directional Rotation Except 2 Pole Motors, 5000 Frame and Larger, which are Unidirectional CCW Facing the
Drive-End. Call for details if CW Rotation is Required.
Cast Iron Frame and End Brackets
1045 Carbon Steel Shaft
Copper/ Copper Alloy Rotor Construction for Frames 5800 - 6800. Aluminum Die-Cast Rotor Construction for All Others
Paint System: Phenolic Rust Proof Base Plus Polyurethane Top Coat
Paint Color: Dark Gray - Munsell 7.5BG 4/2
Vacuum De-Gassed Re-greasable Ball Bearings Using Polyrex EM Grease
Insulated Non-Drive End Bearing on 3600 RPM Motors, 600 HP and Larger
Labyrinth Type Metal Grease Flinger on Both Ends
Cast Iron Inner and Outer Bearing Caps
Grounding Terminal Inside Main Box and on Motor Foot
Stainless Steel Nameplate
Suitable for Use on a VFD - Notes (3), (4), (5), & (6)
6 Leads
Motors are CSA Approved
Precautions should be taken to eliminate or reduce shaft currents that may be imposed on the motor by the VFD as stated per NEMA MG1, Part 31.4.4.3.
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