Interested to Buy Any Domain ? << Click Here >> for more details...
phase association of 3PH L&T static CT meter is wrong.
means 1PH & 1 CT connected properly and other 2 voltage and
CT's inter changed. what would be the impact in the reading?
- 3 Answers
- 8780 Views
- KSEB, I also Faced
- E-Mail Answers
Answer Posted / shankar
Lets us understand this problem by taking load as constant and the incoming supply initially it was RYB in sequence.
let Vr=10<0 Ir=5<-10
Vb=10<-120 Ib=10<-20
Vc=10<-240 Ic=15<-10
Now the total power is P=VrIrcos(-10)+VyIycos(-140)+VbIbcos(-250).
=41.5 watts.
Now lets us consider Y and B phases were wrongly connected to each other
Vr=10<0 Ir=5<-10
Vy=10<-240 Iy=10<-20
Vb=10<-120 Ib=15<-10
Now the total power is P=VrIrcos(-10)+VyIycos(-240)+VbIbcos(-130).
=3.781 watts
so the energy meter will records less units
| Is This Answer Correct ? | 2 Yes | 3 No |
Post New Answer View All Answers
how to remover corona effect and hysteresis losses from contactor
LET ME NOW MORE ABOUT icu and ics for circuit breaker. how we calculate the rating of circuit breaker and i c u and ics values
How to calculate the volumetric capacity of a oxygen & Nitrogen gas Cylinder if pressure is 145 kg/cm2 & water capacity of cylinder is 67 liters.
hai iam arunkumar. i have applied for an section enginner in rrb. i want lat 5 years solved question papers. if u have please sedn it to arun30682@gmail.com
.php|
What is the function of electron gun assembly used in crt?
what is the effect of higher value of GD???
at meter room 50 hrc switch installed,but there are not get earthing proper,so what happen?and 11kv transformer out put going in to hrc main 400a three nog each? so earthing is require for all switch? (some customer made earthing at there home.)
how to know the diffrential relay setting of 06mva step- down (delta-star)transformer?
how we can set the IDMT relay.
What is the reason for using a GE G101 MCB in place of an EP102 MCB if both are capable of AC circuit protection?
what is mean by dry frequency
I want to ask that is there any relation between current denesity of copper and material purity. also is ther any standard which defines the standard current denesity of material.
hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?
# 4 hi friends i m from electrical branch and seeking for tech. + apti. both papers of hpcl plz get it available as soon as possible my email id is sumit_lig189@yahoo.co.in
