Answer / mrudang

if oil has low dielectric strength , ur transformer is in
warning condition ,

why ?? because of in transformer , there is high voltage
winding , it create high temperature , oil is dielectric
medium of two windings , if dielectric strength is low
that means ur oil has moisture content , and it is also
affect the paper insulation of transformer winding

so dielectric strength is very important

Answer / loboreliance2003

dielectric strength of transformer oil should be above 30KV
for 1 min. testing of the transformer oil sample should be
done properly. Ensure no oil bubbles are formed and wait
for bubbles to settle before taking the test.

hi, is there a difference in choosing bus bar for DC or AC ,,if there can anyone help me about. thanks

1 Answers  

---

What is the need of motor starter?

6 Answers  

---

Define availability (operational)?

0 Answers  

---

defination of loads

1 Answers  

---

why odd hormonics only will effect the power system.why not even hormonics

2 Answers  

---

---

If MF is 30000, pt ratio is 110 kV/110 v then what is the ct ratio?

2 Answers  

---

whats the advandage of PMG in alternator?

2 Answers  

---

Which colour of earthing wire

1 Answers   Aravali,

---

how can we select the type of wire.what factors we have to look on it , do we have some formula to calculate it. please guide me on it

0 Answers  

---

ups and invertor battery selection chart and full formula

2 Answers   APC,

---

1. Synchronization is not required A. Thermal B.Hydel C.Wind D.Nuclear

2 Answers   APGenco, Birla Power,

---

How to calculate the electrical load for a standard telecom BTS shelter and capacity of DG set required to cater to this load?

3 Answers   Bhel, INDUS, Indus Towers,

---