how can calculate static 3phase 4wire CT & PT operated
energy meter constant when calibrating using refference
meter suppose we have 11kv/110v PT and 30/5A CT, the meter
constant is 160imp/kwh, where meter is showing MW energy?
give me solution which constant i feed in my refference
meter for calibration of energy meter?
Answers were Sorted based on User's Feedback
Answer / s.ramesh babu
PT Name Plate details is 11kv/110/root3.
But Your EM name plate details is 415/110/root3.
and CT ratio is 30/5A.
Step:-1
Calculate voltage is 11000/415=26.50
Step:-2
Calculate CT is 50/5=10A.
Step:-3
Now EM multification factor is 26.50*10=265.06.
| Is This Answer Correct ? | 10 Yes | 5 No |
Answer / shah
This question set is prepared based on India's requirement.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / k.prakashchandra
Meter constant is 100x6 =600 if ct and pt ratios are not
incorporated (see name plate).160 imp/Kwh is not the meter
constant and it is like rev/Kwh in EM meters
| Is This Answer Correct ? | 0 Yes | 3 No |
how sensors are working?
When can we take Neutral as common neutral link?
What are the saftey parameters in transformers?
how the high voltages are produced?and what it causes?
How to increase the backup of three phase ups?
Why the Potential transformer Primary in connected to Earth?
What is done to avoid interference of high frequency transmission lines with communication lines??
suppose MCC (Motor control center)panel work on field the relay on this damage or not work and earth fault occurs in this and no indication in relay panel given below. than MCB trip or not and what effect the panel how find relay will damage or not work.
Why the capacitor bank is keeping on for electricity supply and keeping it off for generator supply
If I have a LT panel 3ph, 415V, 50Hz which demand load-600kw, how we can calculate its body earth strip size.
If my sfu is 64 Amp & its link is 32 Amp then at what amp.my sfu will trip???
What is the method for testing the differential protection stabilty in generator? When the time of starting What will happen if differentail protection connection wrong means?
Civil Engineering (5086)
Mechanical Engineering (4453)
Electrical Engineering (16638)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)