![Electric Motor Control](https://www.bartleby.com/isbn_cover_images/9781133702818/9781133702818_largeCoverImage.gif)
Concept explainers
In the event of line voltage fluctuations or failure, how is the starter maintained in a closed position?
![Check Mark](/static/check-mark.png)
Explain how the starter is maintained in a closed position during the event of line voltage fluctuations or failure.
Explanation of Solution
If the time is delayed, low-voltage release relay device is used with the magnetic starter and a momentary contact push button station; the motor can automatically reconnect with the power lines after a voltage failure or voltage fluctuations of short duration.
Refer to Figure 24-2 in the textbook, the electrolytic capacitor represented as C1 is charged through the rectifier. If the line voltage fluctuates or fails completely, the electrolytic capacitor can discharge through the control relay to maintain the coil as energized through which the starter can be maintained in a closed position. The discharging time required by the capacitor is a function of resistance in the circuit and capacitance of the device.
Conclusion:
Thus, the process of a starter maintained in a closed position during the event of line voltage fluctuations or failure is explained.
Want to see more full solutions like this?
- Add a second start button to the basic circuit so Start Button 1 or Start Button 2 can be used to start a motor. Include a second stop button that is connected so that Stop Button 1 or Start Button 2 can be used to stop the motor.arrow_forwardCircuit Logic. Match each statement to the proper circuit. All circuits have been drawn with a light (L) to represent the load, whether it is a motor, bell, or any other kind of load. In addition, each switch is illustrated as a pushbutton whether it is a maintained switch, momentary switch, pushbutton, switch-on target, or any other type of switch. from electrical motor controls for integrated systems workbook 2014 chapter 5arrow_forwardAssume ideal op-amp. If V_DC= 2.9, find I_L in mAarrow_forward
- R is 12 kΩ . Find the Thevenin equivalent resistance.arrow_forwardAssuming an ideal op-amp, design an inverting amplifier with a gain of 25 dB having the largest possible input resistance under the constraint of having to use resistors no larger than 90 kΩ. What's the input resist?arrow_forwardI need help with this problem and an explanation of the solution for the image described below. (Introduction to Signals and Systems)arrow_forward
- I hope the solution is on paper and not artificial intelligence. The subject is control systemarrow_forwardI hope the solution is on paper and not artificial intelligence.arrow_forwardVs R1 R2 ww ww 21x R3 Define the Thevenin equivalent of the above circuit where R1= 10 52, R2= 30 S2, R3 = 30 12, Vs = 70 V. VThevenin Number V RThevenin = Number Ωarrow_forward
- Electricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage Learning
![Text book image](https://www.bartleby.com/isbn_cover_images/9781133702818/9781133702818_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781337399128/9781337399128_smallCoverImage.gif)