Answer / prasad asolkar

if we have both metering and protection ct at same place and if they are applicable for a single application then the thicker sized ct is protection ct and the thinner sized ct is metering ct.
for eg.
rated current of dg is 1000A
then, metering ct will be 1000/5A & protection ct will be 500/5A.
so for smaller rated ct requires more no of turns at primary therefore the 500/5A ct have thicker winding & 1000/5A ct will have thinner winding.

Answer / gaurang harkhani

when name plate detail not given in CT the only thing that the first core is always metering ,second core is protection,Third core is differential.This is fore my knowledge of testing.

Answer / kmani190

i thing we we cna find from saturation testing but i dont
know correctly.pls clear it.

What are merits & De-merits of State-Space Method? What is series programming, parallel programming, general programming & direct programming ? And, difference between these programmings Techniques ?

0 Answers  

---

What is the purpose of Vector Group in transformer?

1 Answers   Andritz, ThyssenKrupp,

---

what happens when a power transformer neutral earthing broken???

11 Answers   MacLellan,

---

expansion of rccb

2 Answers   Videocon,

---

160 kw motor running use 2R* 150 SQ mm cable

0 Answers   ID,

---

---

How to calculate the Meter constant for the given Meter (by using any formula)

4 Answers   HCL, Viva,

---

11KW Delta motor is taking about 44Amps in star and goes upto 70Amps in delta and trips OFF. The rated current is 26Amps. Application is for the blower. The motor takes ( no load without coupling impller ) only 2.5A and 5Amps in star & delta starter test.Need to know why its taking high current.

10 Answers   Pfizer,

---

What is relation between mu(nought) and epsilon(nought)?

0 Answers  

---

why is  use the star and delta connection and difference

1 Answers  

---

AT THE TIME OF INSTALLING THE POWER PLANT POWER IS TAKEN FROM NEARBY GRID AND GIVING THE SUPPLY TO THE GENERATOR WHICH ACTS AS MOTOR. WHAT IS THE NEED OF RUNNING THE GENERATOR AS MOTOR?

6 Answers  

---

how much current and power in watts can be carry by 2.5^2mm cu wire and 4 core 10^2mm Al cable?

1 Answers  

---

If the ceiling fan is on slow speed, does it consume less electricity?

2 Answers  

---