In the case of petrochemical area AC drive & AC motor is
used where the speed variation is required. Why they are
not Using DC drive & DC motors in such areas?
- 1 Answers
- 3557 Views
- I also Faced
- E-Mail Answers
Answer Posted / mahavir jagdev
The petrochemical industry is susceptible to fire hazards. In DC motors the carbon brushes on the rotor create sparks, which can ignite the petro fumes or vapours. The AC motor speed can be controlled with electronic speed controllers (frequency or voltage type) thus the danger of fire is not there. Even in olden days the coal and other mines which had ignitable gases, had fire proof DC motors and switch gear, which was expensive.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
How to calculate the time setting for star connection in star delta starter? For example 10KW 3PH Induction motor.
In which of the following case, the rotating magnetic field is reversed? A regenerative breaking B plugging C dynamic breaking D forward motoring
suri transmission
1.why we are using blocks in withoutgaplightning arrester 2.why we ar using bushing in withoutgap lightning arrestor
what is the difference between switch yard to residential area.and how much required it.
what is meant by rotating magnetic filed
The simple way of finding the leakage quantity and % in compressed air distribution system
write down the formula of cable size in RM if current is 50Amp.
What is PEC??Applications........
Explain and give me an example of a time when you had to explain some new procedures to your co-workers for quality service delivery, how did you go about it?
what is the solution for meger test failed the MV cable?
Define filter?
What are the two segments of nyquist contour.
how to calculate power consumption in slip ring motor at different step
Explain the different regions in frequency response?
