Why we are using air gap magnetic condutors

2 Answers   Ford, IOCL,

---

how the harmonic pluses take place in the flow of current

2 Answers  

---

why aggregate is placed all around substation ground.

1 Answers  

---

While elctrical load on DG,capacitor banks kept off why so? If capacitor banks on is their any effect DG?

4 Answers   IL&FS Infrastructure Leasing Financial Services,

---

what is the difference between H.T Or HV lines...?

1 Answers  

---

One of our gas turbine generator unit "1st stage rotor ground fault" alarm was occured several times. we tried to measure some voltage vulue ground fault protection relay (UNS3020a made by ABB and we measured the value of: Ground: 0.9VDC 5V: 5.8VDC 24V: 23VDC u+: 300 – 350mVAC Rf1: 17.5mVAC Rf2: 17.6mVAC The unit still running and the alarm was reset. As of 6pm yesterday and unitl now no alarm happened again. I our protection relay was defective?

1 Answers  

---

explain the application of reciprocity theorom

0 Answers  

---

hi sir i have load of 17.5kw in 3 phase lighting circuit which mcb i can use

3 Answers  

---

how many percent setting of motor over load relay of its full load current

6 Answers  

---

hopkinson's test

5 Answers   Bhel, NTPC,

---

How do we arrive at selecting reactive capacitance value as 30% of h.p rating of motor?

0 Answers  

---

L&T ACB C-POWER OF 800A FAULS TRIPING AT THE TIME OF 110KW MOTOR STARTS WITH EARTH FAULT RELEASE

1 Answers   Ambuja,

---