Answer / sunil solanki

circuit breaker operating time & tripping time should be in
ms.also tripping time should be less than operating time.

Answer / barkha thakur

Circuit breaker operating time & tripping time should be
few cycles of the supply voltage

Answer / electrix

Cicuit Breaker Opening / Closing time are always in milli
secs. usually in 11 kv breakers it is around 60 - 80 ms for
closing and 40 - 60 ms for opening.

how calculation to be done of cable size/o.h. conductor size of 11kv h.t.for the load of 2175 kw

1 Answers   Shell,

---

In order that work may be done:(a) Two wires are necessary(b) The circuit must have a switch(c) Coal must be burnt(d) A supply of energy is required

1 Answers  

---

WHAT IS DC COMPONENT IN CIRCUIT BREAKER?

10 Answers  

---

draw a circuit diagram connecting transformer OLTC- RTCC- VCB-Marshalling Box otherwise Explain in words

1 Answers  

---

How to calculate earth fault current for 6.6 KV , 50 HZ , 756 Amps , 3000 RPM , 0.8 PF generator

0 Answers  

---

why we used star delta starter for above 5hp motors

2 Answers  

---

In 3phase power= Root*3*v*i*cos@ What is the power in 2phase....??? and Derive it

3 Answers   Essar,

---

Lt trivector meter with ring type CT.Spec of meter are 3x240 v, -/5A. Ring ct spec. are 60/5A, line voltage- IL .66/3.0KV..what is the multiplying factor

1 Answers  

---

what sq.mm copper pvc wire need for ac load current 25amps for 230v ?

4 Answers   Khadamat, Siemens,

---

What are the main parts of VCB?

12 Answers  

---

what is the fuction of electrical transducer in control pannel?

6 Answers  

---

What is core CT & it's function?

0 Answers  

---