what is the relation between currebt & voltage.

8 Answers  

---

what is package substation.how many types they have

0 Answers   ABC,

---

What is the IS standard for MCCB to be use (As per capacity of AMP)& for ACB also.

0 Answers  

---

types of motor starter

5 Answers  

---

why the weight of oil in transformer is specified (on the nameplate) in litres as well as kilo grams?

3 Answers   Reliance,

---

I have carried out wiring for lighting in a shed in Industrial area which contains Metal halide lamps & have balanced in 3ph.Now when we put all the lines on in the daytime the current taken at 3phases at MCB comes to be equal i.e.28,29,28Amps respectively but in the night time i.e between 7p.m.to 11p.m. at the same MCb the current is 52,59,62Amp, though I have fit 63A MCB it is tripping in the above period.What may be the reason.? Note: This industry is located in industrial area where majority of steel ingot manufacturing plants are there. Whether this may be due to harmonic? what should I do to overcome above problem.pl suggest urgently.

4 Answers  

---

1. what is the power factor and whatis his losses 2. what is the working procedure of 51RNB AND 87 relay

3 Answers   ABB,

---

what is the difference between current voltage transformer and current transformer and where it is used?

2 Answers  

---

why we dont prefer ac voltage controller instead dimmerstat [if both have same rating] for conducting experiments in laboratories?

0 Answers  

---

WHAT IS NORMAL VECTOR GROUP USED FOR DESIGNING OF TRANSFORMERS??

0 Answers  

---

Why voltage regulation of an alternator is negative for a leading power factor?

3 Answers  

---

what happen if the parallel generator phase angle shift by 1 degree in manual mode

0 Answers   EEEC, MEC,

---