Answer / cnu

CT is used for measuring high currents. even in a circuit
breaker it is used to measure the current and to send the
signal to the relay in case of any abnormality.

the 400/5 on the CT denotes the transformer ratio. that is
when 400Amps flows through the primary of the CT the
secondary of the CT is induced with 5Amps, which is easy
for measurement.

so the fraction on the CT denotes its ration which defines
the value of current flowing in the secondary side.

Answer / varun

5a is a metering capacity

Does the hysteresis loss is due to retentivity property of the material? or it is due to reluctance property?

2 Answers  

---

Is motor current is dependent on load.

2 Answers  

---

WHAT IS THE COOLANTS IN TRANSFORMER?

7 Answers   Bhel,

---

how we can calculate 2 phase welding transformer rating or total power?

0 Answers  

---

how many ampere Maxmium load given on a 10 kva DG set?

3 Answers  

---

how to select the power contactor in Diffrent AC motors.

6 Answers   Titan,

---

how to calculate micom relay earth falt time and current sertting

0 Answers  

---

Why only three phase power generation are load are used

2 Answers   BARC,

---

Define newton's law of viscosity.

0 Answers   Godrej,

---

how can i select the cable ratings

4 Answers  

---

How many percent of power are not being registered if we bypass one side of the meter base terminal using #8 cu wire on 1-phase kwhr meter. 

1 Answers  

---

what is different between phase and netural

0 Answers  

---