Answer / subaharan

first check the transformer bushings and their condition,then
you meggering the transformer each phase to phase and phase to
earth.
power cable you check the high voltage test which is used for
measuring the leakage current,meggering and continuity
checking.
switchgear the same meggering,isolator checking,relay
testing(set various values of currents,voltages and set time
for tripping) make the fault and note the trip time.

how to find three phase complex power in per unit and MVA?

0 Answers  

---

what is Use of Stones/Gravel in electrical Switch Yard??

4 Answers   Sanghi,

---

What is the loss of power of transformer 220kv/33kv,63/80mva of % imp12.05 at 80%load

0 Answers  

---

difference between diode and scr?

2 Answers  

---

Regarding units, for voltage we are denoting Volts as V but in case of current we are not denoting Ampere as A instead as I..Why..? Any technical reason for this..?

1 Answers  

---

difference between high and low impedance BUS BAR relay??

0 Answers  

---

what is the correct method for the outdoor termination of 19/33 KV HT cable step by step?

0 Answers   Finolex,

---

why we can stote dc? why we cant store ac?

0 Answers  

---

What difference between voltage and current

5 Answers  

---

how can i find ct ratio of meter by seeing name plate of meter and how it should be used in MF calculation if it shows only-/1???

0 Answers   Harshal Electrical,

---

If a ACB breaker is tripping and closing problem, then what will we check internal..?

3 Answers  

---

what is the pre commissioning test to be carried out on LT power panel at site?

1 Answers  

---