A temperature sensor (RTD) connected via a temperature transmitter is adjusted to give an output of 4ma at 60 deg and 20 ma at 600 deg.
This output (4-20ma) from the transmitter is connected to an IGBT-inverter to control a high speed (-12,000 to +12,000 RPM) DC motor.
And in the inverter it is programmed as, for 4ma the motor speed will be -3,000 RPM and for 20ma the motor speed will be +10,000 RPM.
The question is : If the motor speed is +5,500 (RPM), what will be the temperature?
(-sign indicates that the motion is in reverse direction).
generally in LT and MV motors we are using
3.5Coresx16,25,35,50 etc cable for supply.although motors
is earthed at two point and having all protection.then why
we are using that 1/2 core for earthing the motors.while in
HT cable we are using only 3core cable for motor
supply.generally lt and mv motors are delta connected and
ht motors having star connection.whethere it is having any
relation with winding connection( star or delta).all motors
i am talking about are dol only.can anybody solve my
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Hello to all,
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