what is the diff between earth leakage relay and earth fault relay?

7 Answers  

---

defination of loads

1 Answers  

---

I have made a 3 phase thyristor full bridge rectifier. But at the moment it is working only for the half bridge operation. Both the half bridges are on operation separately but when i put it into full bridge operation the oscilloscope output is zero. I rechecked that the pulses are correct for each thyristor. what could be the possible reason for this?

0 Answers  

---

we can stepdown the voltage from 230/12v ,and we use the voltage for various electronics components why can't we step up the voltage from 12/230v if we can shall we use the voltage for domestic single phase supply

5 Answers   Areva,

---

how a DC clampmeter works if DC cant b step up r down?

1 Answers  

---

---

How to calculate the current rating of power cables ?

1 Answers  

---

what is the pi test for current transformer?

1 Answers  

---

how do i calculate voltage drop-if length is 1000 meter,amps is 160a

1 Answers  

---

How do we check transformer losses and what are the ways to minimise it.

5 Answers  

---

if field breaker of generator is closed prior to its rated speed on a power generating unit. what will be the effect on generator, unit transformer and starting transformer.

0 Answers   Power Plant,

---

1.what is the basic difference between surge arrestor and lightning arrestor and where we use it. 1.what is the difference between metal oxide without gapped lightning arrestor and with gapped lightning arrestor

2 Answers  

---

in conventional fan regulators how the current varies with speed?

0 Answers  

---