what is the main purpose of line PT and bus PT?
Answer Posted / nageswara rao
line pt means measure incoming line voltage and protect line
under voltage protection 88% of voltage,bus pt means measure
out going bus voltage and protect bus under voltage
protection for motor feeders,44% with time delay 3-5 sec,
pt means the potential transformer, which is used as a
instrument transformer in measuring device. its main use is
to step down the voltage at measurment levels.
Is This Answer Correct ? | 125 Yes | 15 No |
Post New Answer View All Answers
WHAT ARE THE DATAS REQUIRED FOR PROTECTION AND METERING AND CONTROL AND LOGIC PREPARATION,HOW TO STUDY THE PROTECTION AND METERING?
If not into production, how far did you follow the design and why did not you see it into production?
what is the need of starter in tube light and what type of starter is used in that?
please tell me, how i clear the objective test? when i studied form the one book after i solved the objective ,that time i solved that qes. but if i tried solve objective form the other book then i could not solved these que.
sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.
if in 3-phase system voltage=440V,frequency=60Hz, current=400A. then if it is single phase then current=? and if it is single phasing then current=?
In a single how much maximum current and watts using
Is there any relevant technique to produce power from light and heat energy of the sun simultaneosly from same rays of light?
How to Design green buildings services? What is the advantage to design green building?
how to choose cable size with respect to load? how to convert cable size in mm2 to sq.mm?
What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?
what is difference between window type and wound type transformers?where we will use window type and wound type transformers?
Advantages/Disadvantages of earthing of neutral bus on MSB instead of separate neutral earthing for transformer/DG sets feeding to MSB
can i connect REF and Differencial relay in 1 CT core for transformer protection?
How to calculate no of EARTH PIT? Describe the formula as per IS standard?