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Is it necessary to have three phase rotor windings for the transmitter and motor in selsyn motor?
Wiki User
∙ 10y ago
is it necessary to have three phase rotor
Wiki User
∙ 10y ago
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What can a split phase motor use to energize and deenergize the start winding?
The two windings are in parallel with each other. Some motors have a capacitor placed between the two windings. Other connections find a switch between the two windings. When the motor gets up to speed, the switch opens and the start winding is taken out of the circuit and the motor runs on the run winding.
Can an older pool pump draw more amps to trip main breaker?
Yes, an older pump/motor can draw more amps. This usually happens when the motors windings are going bad or the bearings are going out. This causes the motor to have to work harder to rotate. It should have its own breaker. If its blowing your main, The motors windings are probably bad and the motor should be replaced.
Is a pool pump motor drawing half the amps listed on its nameplate a problem with the windings?
A pool pump motor which is drawing half the amps listed on its nameplate can indicate a problem with the windings or a lack of incoming current. Pumps will only draw as many amps as are required to operate under the current load.
Why is a capacitor used in ceiling fans?
capacitors are used in the fans and motors to provide the initial turn or ROTATION OF THE ROTOR after the rotation started the capacitor acts as a current path.It is used to start the fan motor rotating. It is the same with all capacitor start motors no matter what size they are.Its used to improve the powerfactor
What happens if the high and low speed wires are switched on a 3 phase motor?
I am guessing that what you are talking about is a two speed motor. The motor should have 6 wires coming out of it. There are two complete sets of three phase windings for each speed. Look on the motor name plate for the wire numbers or sometimes on the inside of the motor junction box. A 2 speed 6 lead motor should have the following markings, 1U 1V 1W for slow 2U 2V 2W for fast. Also check for the two different amp draws for each winding. These types of motors should be run from a reversing type contactor assemble so that individual overloads can be used on each of the high speed windings and on the low speed windings.
The windings of an AC motor are called?
Windings
What happend when you start motor without starter?
The windings of the motor will be gonebecause of high current diectly goes to the windings of motor.
How Synchronous motor work with principal?
A synchronous motor comprises of a stator windings and a rotor with a squirrel cage and inside that is windings(coils). At starting, this motor is an induction motor running with slip. After the rotor has reached a certain speed, a DC current is applied to the windings inside the squirrel cage. A fixed field is induced in these windings. This field locks in with the synchronous rotating magnetic flux of the stator windings. The rotating stator windings then pull the rotor along. The amount of excitation current can be used to control the power factor of the motor, making this a popular type of motor for high power use with a constant mechanical load.
What is the function of the overload protector?
The bimetallic overload protector is mounted in series with the motor windings. Should the current in the motor windings increase to a dangerous value, the heat developed by the passage of the current through the protector will cause it to open. This breaks the circuit to the motor windings and stops the motor before any damage can occur.
What is the function of overload protector in refrigerator?
The bimetallic overload protector is mounted in series with the motor windings. Should the current in the motor windings increase to a dangerous value, the heat developed by the passage of the current through the protector will cause it to open. This breaks the circuit to the motor windings and stops the motor before any damage can occur.
What is interpole winding in DC machine?
For a D.C motor it is the field windings which must always be in series with the armature windings.
Why would you megaohm a motor?
To determine whether there are any electrical shorts among windings, or from windings to case ground.
What type of dc motor has its field winding in parallel with its armature windings?
Shunt Motor
How is a DC permanent-magnet motor reversed?
Reverse the polarity of armature windings of the motor.
How do you you cover exposed motor windings?
You don't. Motors have vents to dissipate heat. Although you can see the windings through these vents, don't cover them or the motor will overheat and burn up.
Why a starter motor solenoid has two windings?
to move the plunger in and out
What is impedance protection for a motor?
A motor that relies solely upon the impedance of the windings to prevent overheating.
