1 Record The 3 Phase Induction Motor Name Plate Details

Looking for dayton 1 3 hp general purpose motor 3 phase 1725 nameplate rpm 208 230 460 voltage 48 frame 3n350.

1 record the 3 phase induction motor name plate details. Figure 1 typical induction motor nameplate information. This name plate shows a frame size 326t. The efficiency value that appears on the nameplate is the nominal full load efficiency as determined using a very accurate dynamometer and a procedure described by ieee standard 112 method b. Section mg 1 10 40 nameplate marking for medium single phase and polyphase induction motors of the nema standard requires that the following minimum amount of information shall be given on all nameplates of single phase and polyphase induction motors.

Grainger s got your back. Most industrial ac induction motors are rated 3 phase which means that the ac power supply is three separate yet interconnected single phase ac lines with the voltages across the respective windings 120 out of phase with each other. In many cases the motor can do it continuously which is indicated by an s1 or cont on the nameplate. The frame size provides a standard for details such as the location of mounting holes a height of the shaft above the mounting plate etc.

The motor name plate details are as follows. Manufacturer s type and frame designation nema defines standard frame sizes. Motor name plate calculations 1 to 3. The motor is able to supply a shaft output of at least 15 kw if connected to the mains supply as indicated.

Go back to index reliability 11. Today s premium efficiency 3 phase motors have efficiencies ranging from 86 5 at 1 hp to 95 8 at 300 hp. Details of full name plate main part of ip insulation class etc etc. Rating 250 kw voltage poles 8 current speed 741 rev min connection frequency 50 hz design class 3300 v 57 a star a when tested the following no load locked rotor and resistance test results were recorded.

This parameter defines the length of time during which the motor can carry its nameplate rating safely. No load test. The rated output of the motor is 15 kw i e. The 3 beside phase on the nameplate in figure 1 indicates that this is a 3 phase ac motor the motor operates on 3 phase ac power.

If nothing is indicated on the nameplate the motor is designed for duty cycle s1. For abbreviations see mg 1 1 80 manufacturer s type and frame designation. 3 1 a three phase induction motor with design a characteristics is used as an air circulation fan in an air conditioning plant.