Electro Magnets As Applied to Motor Control
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To quickly assess the difficulty of the text, read a short excerpt:
The apparatus is for operating a two- phase four-wire induction motor, connected to an ammonia compressor. When the temperature of the refrigera- tor becomes warm, the thermostat closes the con- tacts H and 0, energizing relay R, which closes energizing relay D, The relay D in closing places a short across the two overload coils then closes the circuit of the main line switch M. This opera- Pig. 2C.
A. 0. Tiiermostat Control Psnel.
#42 tion throws the motor across the line and also opens the ci...rcuit of the timed relay D, which starts to decend to its original position. As D, decends it closes the contact for the switch 1 R, which shorts out the resistance in the rotor circuit; it next removes the short from the two overload coils. The motor then operates at full speed. As the refrigerator cools off, the thermostat closes the contacts and C, short-circuiting the coil of relay R which open the contact circuit and shuts down the motor.
A photograph of a three-phase thermostat con- trol panel is shown in figure 21.
What to read after Electro Magnets As Applied to Motor Control?
You can find similar books in the "Read Also" column, or choose other free books by Whitmore, Ray to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The apparatus is for operating a two- phase four-wire induction motor, connected to an ammonia compressor. When the temperature of the refrigera- tor becomes warm, the thermostat closes the con- tacts H and 0, energizing relay R, which closes energizing relay D, The relay D in closing places a short across the two overload coils then closes the circuit of the main line switch M. This opera- Pig. 2C.
A. 0. Tiiermostat Control Psnel.
#42 tion throws the motor across the line and also opens the ci...rcuit of the timed relay D, which starts to decend to its original position. As D, decends it closes the contact for the switch 1 R, which shorts out the resistance in the rotor circuit; it next removes the short from the two overload coils. The motor then operates at full speed. As the refrigerator cools off, the thermostat closes the contacts and C, short-circuiting the coil of relay R which open the contact circuit and shuts down the motor.
A photograph of a three-phase thermostat con- trol panel is shown in figure 21.
What to read after Electro Magnets As Applied to Motor Control?
You can find similar books in the "Read Also" column, or choose other free books by Whitmore, Ray to read onlineMoreLess
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