Answer Posted / engr. l. o. osuji

It is advised not to parallel the two transformers because
of the difference in their phase shifts. For YNd11 the HV
lags the LV by 30 degrees while in YNd1 the HV leads the LV
by 30 degrees. Parallelling the two will lead to over
heating and other abnormal conditions which may lead their
protective relays to malfunction.

What is distance between electrical panel to land ?

1542

---

How stabilizer works??

2122

---

Can any one give an explanation about rating factors of cable? if we are laying the cable on the air with an temp 15 degree then rating factors will be 1.15 and if we are laying the cable on the air an temp 60 degree then rating factor will be 0.76 please describe it and what is the difference between rating factor and derating factor?

1503

---

How could a garment factory benefit from renewable energy

2765

---

How to calculate Number of Earthing Pits....???

1595

---

if sf6 gas low in gis what will happen

825

---

why surge protectetor work explain with the help of circut diagram?

2008

---

In between UPS out going changer over switch and ups raising main input, both side cable gland producing heat but the cable doesn't get heat,Why?

2270

---

Y phase plates are used in transmission line??? what is there need???

2922

---

What are the necessary solutions needed to be carried out on a malfunctioned earthing mechanism of a VACUUM CIRCUIT BREAKER.(TAMCO)

2014

---

What is meaning of out of phase (making & breaking) capacity And how to calculate

2247

---

What is thresh hold value of current?

2174

---

1.What is the range of stator resistance of 3-phase induction motor? 2.Two electrically operated vibro motors are foxed in parallel direction in vibrating feeders. what is the direction of both vibro motors?

1890

---

what is the current setting for different relay protection for transformer .

2308

---

why h parameter are called as hybrid parameter?

1978

---