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In 3phase induction motor, stator winding splited into 3windings (Each winding conductor size, no of turns etc are equal to each other). So 3 windings have 6terminal. Generally all 6 terminals are taken out for termination on 5HP and above rated 3phase motors. So, that motor can be started with star / delta starters to reduce starting current (DOL starter does not reduce starting current). Major advantage is It is easy to change the connection (STAR / DELTA) acoording to the purpose going to be used. Also starting and ending terminal to be marked properly.
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JordanIt depends that which type of starter you are using. If DOL then make DELTA / STAR of motor's 6 terminals to make 3 terminals and then connect that 3terminals to DOLS starter. If STAR DELTA starter means connect all 6terminals to starter.
You have to keep in mind the winding polarities while doing STAR or DELTA and connecting at starter
Every 3 phase motor has three coils (windings), each coil having two terminals, one connected to start of the coil and other to the end. Most* of these motors have all six terminals brought outside.
During starting, motors tend to draw high current, creating stresses on the motors as well as on the supply systems. To reduce these stresses, motor starting current is reduced by connecting the coils in star. Once the motor picks up the speed, motors connection are changed to delta in order to have better load driving capability. Changing the connections from Star to Delta is possible by bringing out all six terminals.
Additional information: . Most of the three phase motors (generally ratings above 2 or 3 HP) have all six terminals brought outside, but some (lower ratings, up to 2 or 3 HP) have only three terminals. The reason is, for lower ratings, the ratio of starting current to rated current is not large.Therefore motors are permanently connected in say Delta.
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How do connect a wye connection for 12 leads out motor?
Normally there are six terminals (two terminals per winding in 3 phase system) for a motor. If you find 12 terminals, you need to read the motor name details or specifications to get more info. The motor could be with two different sets of winding (double speed motor)
How can a dlta connected motor be converted in star?
If the motor terminal has six terminals in the terminal box, then it can be connected either in delta or star. If there are only 3 terminal wires then the motor can not be connected in star.(it means that the motor is designed to be connected in delta only)
How do you change a 6 wire three phase motor to a 3 wire?
The six wire motor is probably a two speed or a dual voltage motor. Look on the underside of the motor's junction box. Here is where the wiring diagram of the motor is pasted. Look on the motor's name plate to see if it is a two speed motor. There will be two sets of amps and RPM and maybe voltages. It could be that six terminals are brought out to terminal box so that it can be connected either in delta or star configuration. As stated above the name plate details would indicate the correct connection.
How do you convert ac motor to dc motor?
the quick answer is you cant. squirrel cage induction motors need AC power to generate the magnetic field in the rotor...if however you have a motor that has brushes in it (drills, mixers,etc) then this motor can be run off ac or dc..the commutator brushes do the work of moving the current to the proper coils at the proper time.
How is the two speed three phase motor internally connected?
With six wires, 3 connections on u1 v1 w1 And 3 connections on U2 v2 w2 The motor connections are linked out at the controller via contractors
