operation of protection relay watchdog contact?

0 Answers   L&T,

---

Can anyone send details regarding motor protection relays ? their manuals please ?

1 Answers  

---

Unit of Magnetic Flux Density a) Tesla b) weber c) Hendry d) Farad

3 Answers   Ecil,

---

I want to ask that is there any relation between current denesity of copper and material purity. also is ther any standard which defines the standard current denesity of material.

0 Answers  

---

NGR? What is NGR?

14 Answers  

---

---

how to calculate mf when meter and cTPT detail are given

0 Answers   IBM,

---

What is difference between Ac Voltmeter And Dc Voltmeter ????

2 Answers   KCP,

---

If a manufacturer decribes a power supply transformer as providing a secondary voltage of 24 volts when connected to a 240 volts supply, do you think they are refering to the full load or no load secondary voltage?

3 Answers  

---

what is the formula of starting current of 3phase and 1 phase motor???

0 Answers   L&T, WFP,

---

why ten delta testing is carried out on power transformer

0 Answers  

---

if the load is 80 amp for main fuse and 100 amp for breaker so how can we calculate the cable size (cooper ) .

0 Answers   Bhel,

---

in our transmisison sub station why we step down firstly 132kv\33kv then 33kv to 11kv. can we direct step down 132kv to 11kv.

2 Answers  

---