Customer Testimonials
Quick Exchange!
5 star review 5 star review 5 star review 5 star review 5 star review
Quick Exchange!
Customer had a machine down and needed an Allen Bradley 2711E-K14C6 monitor.  We had two in stock ready to go.  The customer was on their way to pick it up from across the state.  Item was final-tested, boxed up and ready to go.  The customer picked the item up from our second shift team. They brought an exchange....

Naveen
Engineer
Comstar


See More Testimonials › 
Home ›  Learning Center ›  Videos ›  Detail
 

Nameplate Information on Motors


Steve explains general nameplate information on electric motors- 3 phase AC motor nameplates induction motor.

 

  • What is Frame size?
  • F1 or F2- Is the junction box left or right of the shaft
  • The mounting bolts for C-flange are screwed right into motor flange itself
  • D-flange is physically larger in diameter than the motor and the bolt goes through the flange and screws into the gearbox or the pump or whatever
  • A Z-frame is some type of special shaft, could be longer, a knob on the end, or a double shaft, etc.
Contact RepairZone.com for further information – Buy, Exchange, Repair your Automation equipment, such as servo motors and electronics. Save money and time by calling us, today! (989)922-0043

 

Transcript:

 

Prof. Steve explains general nameplate information on electric motors- 3 phase AC motor nameplates induction motor. First, we need to know a little bit about the actual frame size. Frame size back in 1952, they were what’s called Pre-nema, physically, these motors were very large. Due to the fact that our insulation systems we use weren’t very good the motors had to run very cool. Because they ran cool, the motors had to be large. In 1962, we changed to a U-frame motor, in some areas, they are still very dominating. They made the Pre-nema a little smaller than they went to the T-frame and the IEC, the International Standard, which are metric, NEMA, which is the National Electrical Manufacturers Association, they determine what physical size all the motors are going to be, the shaft dimensions, bolt holes, from one manufacturer to another, as to have similar motors that can be bolted back up into the existing and you won’t need the original manufacturer motor. An F1 design is your standard right out of the box when you call for a motor. The junction box is going to be left of the shaft. An F2 design, looking at the shaft, the junction box will be on the right. Sometimes, how tight your machine actually is, you won’t be able to use the standard. Back in the day, the OMM would put C-faces on, D-flanges, brakes, and all this would be specified on the actual motor name plate. Now, the way they do it is the manufacturers sells the add-ons to the OEM and motor shops, and they put the parts on, but don’t change the name plate to reflect the changes, so you have to be careful. C-flange is denoted as 143TC; D-flange is denoted as 143TD; the difference is the mounting bolts for C-flange are screwed right into motor flange itself. D-flange is physically larger in diameter than the motor and the bolt goes through the flange and screws into the gearbox or the pump or whatever you are mounting it to. Then, the brake motor, which the motor on the back will be, say a 143TY or a 143TCY, where the brake is mounted on the back of the motor. A Z-frame is some type of special shaft, could be longer, a knob on the end, or a double shaft, etc. The new IEC standards are all in kilowatts, 746 watts per HP.

Return to All Videos link
EASA Repair Zone
Member since 1977
MMBDC Repair Zone
Michigan Minority Business
Development Council Member
EASA Accredited Member
Copyright 2021, Repair Zone

615 Andre St
Bay City, MI 48706
Phone: 989-922-0043
Email: support@repairzone.com
Owned and Operated By York Repair, Inc.
‚Äč
Payment Methods Accepted
We accept Visa We accept Mastercard We accept American Express
We accept Discover We accept eCheck We accept PayPal