What is the frame size of motor?
What is the frame size of motor?
The frame sizes normally associated with fractional horsepower motors are 42, 48, and 56. In this case, each frame size designates a particular shaft height, shaft diameter, and face or base mounting hole pattern. In these motors, specific frame assignments do not relate to horsepower and speed.
What is frame size in induction motor?
In fractional horsepower motors the frame sizes are two digits and represent the shaft height of the motor from the bottom of the base in sixteenths of an inch. For example, a 56-frame motor would have a shaft height (“D” dimension) of 56/16 of an inch, or 3.5 inches.
What does the size of a motor mean?
What does engine size mean? Engine size may also be referred to as ‘engine capacity’ or ‘engine displacement’ and is the measurement of the total volume of the cylinders in the engine. The bigger the engine size, the more space there is for air and fuel inside it.
What are 4 common types of motor enclosures?
The Most Common Types Of Electric Motor Enclosures
- The most common types of enclosures are:
- Open Drip Proof (ODP)
- Weather Protected (WP1 / WP2)
- Totally Enclosed Fan Cooled (TEFC)
- Totally Enclosed Non-Ventilated (TENV)
- Totally Enclosed Air Over (TEAO)
- Totally Enclosed Forced Ventilated (TEFV)
- XP (Explosion Proof)
What is a 56 frame motor?
Specifically “Frame” refers to the diameter of the armature in the motor. Although 2 motors may have the same horsepower rating, a 56-Frame motor will be 40% larger. It will also run cooler and last longer.
How do you read motor frame size?
The frame number relates to the “D” dimension (distance from center of shaft to center bottom of mount). For example, in the two-digit 56 frame, the “D” dimension is 3½”, 56 divided by 16 = 3½”.
How do I size a motor?
The quickest method to closely estimate motor horsepower is to use a digital clamp meter to measure current and voltage to the motor, and then perform a simple calculation. Use this formula to estimate motor horsepower. Horsepower(hp)= Voltage x Amperage x % EFF x power factor x 1.73/746.
How do I know what size electric motor to buy?
To determine the technical specifications, it will be necessary to determine the power, torque and speed of the motor. In order to determine the size, you must know how much space the motor will take up and how it is mounted (i.e.how it will be fixed in the system).
What is NEMA standard for motors?
NEMA is the North American standard for electric motors. NEMA is the publisher of NEMA MG 1-2014, a book that defines the manufacturing standards for alternating-current (AC) and direct-current (DC) motors in North America. The IEC is the standard for electric motors for the rest of the world.
What are the two types of motor enclosures?
How big is a standard Siemens IMC motor?
Standard motors (up to frame size 315 L) Catalog Part 2 Energy-saving motors with improved efficiency (Improved Efficiency EFF 2) Self- venti- lated IP55 Aluminum1LA7 0.06 … 18.5 kW 1LE1/1PC1 1LA5 11 … 45 kW IP55 Cast iron1LA6 0.75 … 18.5 kW 1LG4 11 … 200 kW
How big is a standard Siemens D 81.1 motor?
Standard motors 2 up to frame size 315 L Siemens D 81.1 · 2008 2 2/2 Orientation 2/2 Overview 2/4 Benefits 2/4 Application 2/5 Integration 2/7 Technical specifications 2/8 Selection and ordering data 2/9 More information 2/10 Self-ventilated energy-saving motors with improved efficiency, Aluminum series 1LA7 and 1LA5
How to select special versions of Siemens motors?
Step 5 Selection of the special versions (see under “Special versions”) Complete the motor Order No. Determine special versions and the associated order codes (e. g. special voltages and types of construction, motor protection and degrees of protection, windings and insulation, colors and paint finish, mountings and technology, etc.) .
How big is a Siemens squirrel cage motor?
SiemensAG 2008 IEC Squirrel-Cage Motors Standard motors up to frame size 315 L Orientation Siemens D 81.1 · 2008 2/3 2 Overview (continued) Efficiency requirements according to EPACT In 1997, an act was passed in the US to define minimum efficien- cies for low-voltage three-phase motors (EPACT).