What is a series wound motor?
adjective. (Electrical engineering: Electrical power, Motor or generator) If a motor or generator is series-wound, it has the field and armature circuits connected in series. An inductor and a power resistor are placed in series to simulate the resistance and inductance of a large series-wound DC motor.
What are the distinguishing characteristics of the series wound DC motor?
In a series DC motor the field is connected in series with the armature. The field is wound with a few turns of large wire because it must carry the full armature current. A characteristic of series motors is the motor develops a large amount of starting torque.
How do you test a DC series motor?
- Supply voltage = reading of voltmeter, V = V1 volts.
- Motor input current = reading of ammeter, A1 = I.
- Terminal voltage of generator = readings of voltmeter, V2 = V.
- Loading current of generator = reading of ammeter, A2 = I.
- Armature resistance of each machine = R.
- Series field of each machine = R.
How do you test a motor for continuity?
Start by completely disconnecting the spindle motor from all power sources. Check each wire, including T1, T2, T3 and the ground wire. If the reading is infinite, your motor should be fine. If you get a zero reading or any continuity reading, you have either a motor problem or a cable problem.
What is meant by series wound?
Definition of series-wound : having the armature coil and the field-magnet coil in series with the external circuit series-wound dynamo.
How does a series motor work?
A series DC motor converts electric energy to mechanic energy based on the electromagnetic principle. In this type of DC motor, a power supply terminal sits at one end of the armature and field coils. By applying the voltage, power starts in these terminals and passes through armature and field windings.
What is the biggest advantage of a series wound DC motor?
Advantages of DC series motors: Protection is very easy. It is cost-effective. Series wound motors can use for AC or DC supply so it is also known as universal motors. Compare with shunt motor DC series motor develop power for the same construction size.
What is a series wound DC motor used for?
The series motor provides the starting torque required for moving large loads. Common uses of the series motor include crane hoists, bridge and trolley drives on large overhead cranes and traction motors used to drive trains. Series wound motors are designed to get massive amounts of weight moving.
How do you diagnose a bad golf cart motor?
You have enough going on in your life without your golf car refusing to start when you turn the key in the ignition. If your golf car won’t start, is slower than it used to be, or is experiencing other technical problems, you could have a bad motor on your hands.
How do you test a motor with a multimeter?
Set your multimeter to Ohms. Start by completely disconnecting the spindle motor from all power sources. Check each wire, including T1, T2, T3 and the ground wire. If the reading is infinite, your motor should be fine.
What is load test on DC series motor?
The load test is conducted by applying a spring balance load to brake drum of machine. By tightening the belt over the pulley different load can be applied. The spring balance reading S1 and S2 are noted and the effective radius ‘r’ of the pulley is measured. The output power can be calculated as P=2πNT/60 Watts.
What is brake test on DC series motor?
In the brake test, the dc machine is tested by actual loading with the help of breaks. Since the load is applied directly to the machine shaft, it is a direct method of testing a dc machine.
Should motor windings have continuity?
Each phase to phase must have a continuity if winding is OK. If any particular phase fails the continuity test, your motor is probably burnt.
What is the main disadvantages of a series motor?
The series motor has poor speed regulation. When the load speed of the machine increases, the DC shunt motor keeps its constant speed from no load to full load. The dc series motor’s Torque drops sharply when the speed increases.
Why does Series motor start with load?
At the starting of the motor there is no back emf, so large current current flows cause high starting torque. This starting torque leads to very fast acceleration of motor if shaft is not connected to any load. This fast acceleration cause motor to damage. So series motor are always started with load.