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Found one DC motor having small sparking,but the commutator is light and dark bar pattern.commutator is round. We 500kw dC motor operted at 500rpm with 480Amp's .The DC motor full load current is 1050Amp's.
Why the commutator had small spaerking.
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∙ 12y ago
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Does Equalizer ring minimizes sparking in dc motor?
yes
Why are brushes staggered in dc motor?
To avoid sparking they need to be placed at zero point
The part you should check first when you are servicing sparking Universal Motor is the?
commutator
What is the different between ac dc motors?
DC Motor works on DC source and AC motor works on AC source
Fan works on ac or DC?
It depends on the motor. The fan is driven by an electric motor, and it can use a dc motor (as in a car) or an ac motor (as in a house). They are not interchangeable.
Does Equalizer ring minimizes sparking in dc motor?
yes
What is the function of pole shoes of dc motor?
To overcome the sparking at brushes.
Why are brushes staggered in dc motor?
To avoid sparking they need to be placed at zero point
What causes the overheating of commutator in dc motor?
brush friction, poor ventillation, excessive sparking caused by high voltage
What causes sparking?
It depends on the type of sparking/arcing. If you mean in a DC or series-wound motor, it is caused by the making and breaking of the commutator segments against the motor brushes.If you mean under a car, then it could mean that the muffler is dragging the ground.If you mean in a CRT television, then it is likely problems with the flyback transformer.
Can a DC motor work on an AC supply?
There is a motor that is known as Universal motor which works on DC or AC .You might find one in a drilling machine or a domestic grinding machine .But there is a disadvantage ,in that there will be sparking at the commutator between the brushes and the commutator segments due to a shift in the magnetic neutral axis while on AC operation.
When you short two wires of 24V dc there is no sparking in telephone lines why?
because it dc not ac
What is a pigtail on a dc generator?
Pigtail is a device to protect the brush from sparking
What are applications of space vector modulation?
Because there's sparking in DC motors, they are inherently less efficient than say AC motors are, The trick with AC motors is that they run primarily at the frequency of their power source. What happens when the power source can change it's frequency and amplitude? The motor can behave as well as any DC motor.
What is a DC shunt motor?
A DC shunt motor is a motor using DC supply with the the inductor connected parallel to the armature.
What are uses of bidirectional dc motor?
6V dc motor
What is dc motor with synchoronous operation?
A synchronous motor is an ac motor that does not run on dc.
