elanshul
Junior Member level 2
- Joined
- Apr 27, 2013
- Messages
- 22
- Helped
- 2
- Reputation
- 4
- Reaction score
- 2
- Trophy points
- 1,283
- Location
- Muzaffarnagar, Uttar Pradesh, India
- Activity points
- 1,448
Dear Friends, can anyone guide me how can we calculate stepup autotransformer va from a control or isolating transformer va. here is a example to calculate step down autotransformer va from a control or isolating transformer va.
Power of a normal transformer P=(Fq / B)² where Fq = core area in cm² B = magnetic induction T or wb/m²
P auto transformer = P normal transformer / {1-(U2/U1)} where U2 input voltage and U1 output voltage
more explanation is as follows if ca = 11.52 cm² and B = 1.3 wb/m² U2 = 110Volt and U1 = 110 volt Then
Power of a normal transformer P=(11.52 / 1.3)² = 78.5W
P auto transformer = 78.5W / {1-(110/220)} = 157W
can anyone help me this type of formula for A step up autotransformer. i will be highly obliged.
Power of a normal transformer P=(Fq / B)² where Fq = core area in cm² B = magnetic induction T or wb/m²
P auto transformer = P normal transformer / {1-(U2/U1)} where U2 input voltage and U1 output voltage
more explanation is as follows if ca = 11.52 cm² and B = 1.3 wb/m² U2 = 110Volt and U1 = 110 volt Then
Power of a normal transformer P=(11.52 / 1.3)² = 78.5W
P auto transformer = 78.5W / {1-(110/220)} = 157W
can anyone help me this type of formula for A step up autotransformer. i will be highly obliged.
