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How many main - line contactor assemblies are used in an across the line AC reversing motor?
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∙ 9y ago
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Helen O'Kon
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How many main line contactor assemblies are used in an across the line AC reversing motor control?
2
Star delta motor what are the links across the terminal for?
That is the star point contactor that opens when it goes into the delta configuration.
What is wye-delta motor control?
It is a type of starter that allows a motor to be started across the line by starting the motor with a reduced inrush current. The motor is started in a wye configuration until it gets up to speed and then a timer drops the wye contactor out a draws the delta configured contactor in. The motor then operates in a delta wired configuration.
What is the difference between a motor starter and a contactor?
Motor started will have overloads the contactor connect es line voltage.
How does magnetic contactor operate?
explain me about the contactor works with examples. if i want to control a motor with contactor. and how i can use contactor in loops with over load and circuit breakers.
Which direction does a motor spin?
All motors have the ability to rotate in either direction. The motor has to be connected to additional equipment to make this happen. In a three phase motor a reversing magnetic contactor is used and in single phase motor usually a drum switch is used.
How do you wire a relay to a motor contactor?
One way is to use the auxiliary contacts on the motor contactor to close a separate source supply to drive an auxiliary relay.
Which side of a motor contactor should the overload contact be placed?
On the load side of the contactor. T1,T2,T3.
How do you know the star delta conection of motor?
The quickest test is, to see if the motor is a six or nine lead motor. In this type of motor the star point is not connected inside the motor but brought out to the motor boxes junction box. A second quick test it to look at the magnetic contactor configuration. There will be a three mag in the setup, two of which will have a tie bar between them. The mags will have the same appearance as reversing magnetics.
How do you make a 30HP three phase motor connection?
From the bottom of the motor contactor's heater block you connect the motor's leads to T1, T2 and T3. If the motor rotates in the wrong direction reverse any two leads on the bottom of the motor's contactor heater block.
What is the difference between an definite purpose contactor and a lighting sontactor?
A definite purpose contactor is designed (and rated) for a specific load. So a lighting contactor is one example of a definite purpose contactor. A motor starter contactor is another example. So, a lighting contactor is a definite purpose contactor, but a definite purpose contactor is not necessarily a lighting contactor (it might be a motor starter, for instance).
What component starts the indoor fan motor in an air conditioner?
contactor
