What is Type test of induction motor?
The no load test on an induction motor is conducted to measure the rotational losses of the motor and to determine some of its equivalent circuit parameters. In this test, a rated, balanced ac voltage at a rated frequency is applied to the stator while it is running at no load.
What is Type test of motor?
Motor testing assesses the integrity of a motor through the use of computer-supported equipment or tools that monitor trends within the motor. The main objective of motor testing is to reveal hidden problems and prevent unnecessary failure.
Which specific test is not for induction motor?
As the name suggest no load test is performed when rotor rotates with synchronous speed and there is no load torque. This test is similar to the open circuit test on transformer. Actually, to achieve synchronous speed in an induction motor is impossible. The speed is assumed to be synchronized.
What are the types of induction motor starters?
Types of Magnetic Motor Starters
- Direct-On-Line Starter. The direct-on-line starter is the simplest form of motor starter, other than a manual starter.
- Rotor Resistance Starter.
- Stator Resistance Starter.
- Auto Transformer Starter.
- Star Delta Starter.
What is load test of induction motor?
The load test on induction motor is performed to compute its complete performance i.e. torque, slip, efficiency, power factor etc. During this test, the motor is operated at rated voltage.
Which of these are routine tests of induction motor?
Routine tests Winding resistance measurement. No-load running current and power. High-potential test. Locked-rotor test.
What is Test and types of test?
TYPES OF TEST There are seven types of test. Diagnostic Test Proficiency Test Achievement Test Aptitude Test Placement Test Personality Test Intelligence Test
What is the use of DC test on induction motor testing?
To calculate the resistance (R2) of the rotor we should have the idea of R1 (stator resistance) so that it can subtract from the total resistance. The test is done on the motor to find the resistance (R1) of the stator is named as dc test of induction motor.
What are the different type of starters?
Type of Motor Starters:
- Manual Starter.
- Magnetic Starter.
- Direct Online (DOL) Starter.
- Stator Resistance starter.
- Rotor Resistance or Slip Ring Motor Starter.
- Autotransformer Starter.
- Star Delta Starter.
- Soft Starter.
How many types of induction motors are there?
There are basically two types of induction motor. The types of induction motor depend upon the input supply. There are single phase induction motors and three phase induction motors. Single phase induction motors arenot a self-starting motor, and three phase induction motor are a self-starting motor.
What are the tests performed on induction motor?
These tests are performed to check the electrical or mechanical defects of the induction motor. Firstly check the components of motor like. Broken rotor bars. High resistance joints. Cracked end rings.
How does an induction motor work?
Due to this, the rotor will feel a torque which will make the rotor to rotate in the direction of rotating magnetic flux. So the speed of the rotor will be depending upon the ac supply and the speed can be controlled by varying the input supply. This is the working principle of an induction motor of either type. 4.
What is slip ring or wound three phase induction motor?
• Slip ring or wound three phase induction motor : In this type of three phase induction motor the rotor is wound for the same number of poles as that of stator but it has less number of slots and has less turns per phase of a heavier conductor. The rotor also carries star or delta winding similar to that of stator winding.
How to calculate the power input of a three phase motor?
power input to three phase motor can be calculated by a single watt meters as they are connected in two watt meter method. It is necessary to check the ground resistance between the motor body and terminals of the machine.