In an ammeter used for measurement of current, what is the
meaning of the representation of range as '0-50-300'?
- 4 Answers
- 7727 Views
- I also Faced
- E-Mail Answers
Answer Posted / sella
THIS TYPE AMMETER WILL BE USED IN MOTOR FEEDERS. IF THE
MOTOR'S FULL LOAD CURRENT 50 MEANS IN STARTING TIME IT WILL
TAKE 50x6 TIME=300AMPS. THAT'S WHY WE ARE USING THIS TYPE
AMMETER IN MOTOR FEEDER. IN THIS AMMETER UPTO 0-50 AMPS
PROPERLY DEFINED IN DISPLAY BUT AFTER 50-300A THEY JUST
MENTION IN DISPLAY. IF WE USE NORAML AMMETER(0-50AMPS).IN
STARTING TIME METER WILL BE FULLY CLOSED FOR SOME SECOND
BECAUSE OF THIS METER ACCURACY WILL GO DOWN. IN NORMAL TIME
METER NEEDLE IN ACCELATION WE CAN'T MEASURE PROPER VALUE.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is Traction? 1KVA Alternator, How much urrent taken?
how can you size an automatic voltage regulator?
how we can calcultae the short circuit level for bus bar
What is the relation between frequency and motor rpm?
For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?
how to carried out DAR test in 11 KV Alternator ?
What are the factors influence the choice of an electrc drive?
Why in power plant projects we see DOL starting method used for motors upto 160 kW instead of star delta method
from generating station If 400v LT line length is 1000m how much voltage is drop and how do i calculate it? which cable will be use for this line?
should %impedance be high or low in a power transformer? if so why?
Can u Explain about the electronic trivector meter and the use of data converters in them?
kindly send me 11KV MV motor differential protection procedure by primary injection method.
i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value
hai friends i have BSNL JTO exam on next month so if any body have model question paper or give preparation tips to my mail id kumar4486@yahoo.co.in this will helpfull for my future .plz & thank u by kumar
How PADO software increase the efficiency of power plant?
