Answer / aramuthan

The insulation level in nothing but the type of insulation
used in the winding of the electric machines. There are four
types of insulation level used in electric machines.
A,B,F,H EACH insulation withstands some point of
temperature. for eg A can withstand only 105 deg C

http://tristate.apogee.net/mnd/graphics/fnrins01.gif

Answer / sumit rathi (mzn)

for a particular item of equipment a characteristic defined
by one or two values indicating the insulation withstand
voltages
Found on

Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT

0 Answers  

---

how to calulate bearing number of any motor ?

0 Answers   Transfield,

---

how can get electrical "c" licence.i am complited in DEEE.PASSING YEAR OF 1993.WORKING IN PVT COCERN LT LINE.PLEASE ADVISE ME .CELL NO 9994786021

0 Answers  

---

Sir, Please tell me that how I will calculate the efficiency of rectifier. Because input is ac and output is dc. Is it right to put two unlike signal together.

2 Answers  

---

How the over load setting for HT Motors calculated-provided in Numerical Relay

0 Answers   Damodar Valley Corporation,

---

i have one transformer 1000kva, 11/.433kv. we are using 200/5 amp. ct unit for measuring purpose, & one 800 amp. V.C.B Unit for the same t/f operate, i wants to known the primary current of T/F is only 53 amp. why we used 800 amp. V.C.B ? & 200/5 amp. CT Unit.

4 Answers  

---

Is it possible we are step down 11 kv to 230v ?

2 Answers   Fedco,

---

what is the different ratings of ACB/VCB/SF6 which is used at HT side

3 Answers   Hosco,

---

What is the Different Between Breaker and One and half breaker.

2 Answers  

---

Who is reputed manufacturer of TNC switch for ACB in India ?

3 Answers  

---

as we know that N=120f/P speed of an im can be controled only through changing no if poles, can we control by changing the frequncy????

7 Answers   JSW,

---

what is the effect come when i changed the alternator exciter field winding DC palority(+ve & -ve)which is coming from AVR.

1 Answers   Wartsila,

---