For a Potential Transformer(PT), the primary neutral
terminal must be grounded before energization. Why....?
What will be heppend if we energize the PT without grounded
the primary neutral point? Why..........?
- 2 Answers
- 15708 Views
- I also Faced
- E-Mail Answers
Answer Posted / om s.
while connecting pt each primary phase winding is connected to phase to earth. The neutral point of load is connected to neutral point of secondary’s. Neutral point of primary is solidly earthed.
If primary neutral is not earthed the zero sequence component of voltages (due to earth fault) cannot flow through primary windings. Hence phase to earth voltages of system which contain zero sequence component do not get truly transformed and measured voltage are distorted. Hence the earth fault on system cannot be sensed on secondary side of VT.
| Is This Answer Correct ? | 22 Yes | 2 No |
Post New Answer View All Answers
TCS IS IT COMPANY THEN WHY DO THEY NEED ELECTRICAL &ELECTRONICS ENGINEERS?
DESCRIBE THE CONSTRUCTION ANDOPERATION OF BELT CONVEYORS AND SCR CONVEYORS , DRAW NEAT SKETCHES
What is the general power consumption rating of CPU CRT type and Flat type, Monitor,Printer, projector, Scanner?
Please send 110 kv sb station full single line drawing(sld)
explain the functions of main isolation switches
hi, i have 3x200KVA and 2 x 80KVA UPS with battery bank of 150AH 68Nos. and 100AH 204Nos., i need to install AC either ductable or PAC type, so can you help me to calculate heat load and capacity of the AC to install.
why transmission is only 3 phase and not 2 or 4 or poly phases
Why 1/3 is used in symmetrical components?
what are the ''pitting rings''and how cn they be controlled in a series generator
We have given to 3phase supply to ups system & how can coming netural
Explain the construction of the conservator, operation and purpose, and draw the diagram of the conservator.
what is the working process of over & under voltage relay.
What is the bundle conductor?
Two liquids hot and cold in two vessels are there and an metal bar acts as a conductor of heat between the two vessels. what happens then. what happens after 24 hrs?
what is diff. between earthing grid,earthing mess, earting grid?
