What is CRT (Contact Resistance Test) for Isolators or Dis- connector Switches? Why we performed it & whats the Testing procedure.

1 Answers   Siemens,

---

what's the use of cvt and wave trap in 400kv switch yard.......

5 Answers  

---

What is icu and ics in Acb and how many time icu or ics passes from breaker?

0 Answers   Engineering Vision,

---

how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size

0 Answers   Tyco,

---

how many types of transformer.

3 Answers   Technocrats,

---

---

What is difference between MCB,MCCB,ELCB and RCCB? Brief description and why RCCB is costly?

3 Answers   JLL,

---

What is the comparison between 30mA DP RCCB and 100mA DP RCCB and can replace it against 63A MCB

0 Answers  

---

Mention the value of earth resistance and factors on which it depends on.

1 Answers  

---

Why are the cores of large transformers built up of circular transactions ?

0 Answers  

---

why do select 11000v rubber mat even we use only 415Volts

1 Answers   Saint Gobain, Tata Steel Limited,

---

Distinguish between Earth & Neutral?

5 Answers   Essar,

---

IS diode and blocking diode are the same?..what is meant by blocking diode

1 Answers  

---