Answer / bharatgohel5314

CBCT means Core Balance
Current Transformer and it
used for cable protection.

Answer / srinivas

CBCT is Core Balance Current Transformer. it will be having one winding passes over three phases and senses the zero sequence currents there by tripps the circuit through the breaker. its main purpose is to distinguish the earth faults from short circuit faults..i.e its operation depends up on the zero sequence currents that are produced when earth fault occurs.

What happen to alternator if prime mover fails?

4 Answers  

---

what are the main faults that occur in stabilizers? How they corrected and resolved ? Types of stabilizers ?

0 Answers  

---

working of diesel generator ?

0 Answers  

---

HOW DO YOU PROVE THE HIGH VOLTAGE CABLES OR BUSBAR IS DEAD EVEN AFTER IT IS DE ENERGISED

6 Answers  

---

we have a 2000kva step down transformer at our site. The HT side is charged from 22000V. So the primary current will be 52.48A. So why the HT breaker(SF6 ABB) is rated of 1250Amps ?

2 Answers  

---

---

What products have you designed which have entered high volume production?

0 Answers   Intel,

---

A rotor of an induction machine is delta connected. Now is there any necessacity to short the slip rings?

8 Answers   TCS,

---

How to know of any cable size if there are not written on cabl?

0 Answers   APGenco, El Seif,

---

How to calculate voltage drop in copper and aluminium cable? I have laid 240Sq.mm Aluminium cable for the length of 600 Mtrs in 1 Mtrs underground. Normal load is 150A. Transformer is 630KVA, 6.KV/433V. But, I am getting only 395 Volts when load. How to calculate voltage drop and what is the permissible voltge drop for this circuit?

1 Answers  

---

how to calculate the settings for shaft ct protn in hydro generators

0 Answers  

---

Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

0 Answers   Pride Hotels,

---

Why is making current of CB always greater than CB breaking burrent?.

6 Answers   JP Group,

---