Answer / aymaan

they r used to supply the substation auxillaries at
differnt voltage levels other than primary and secondary
also when we use ynyn0 connection in transformer a delta
tertiary is used to provide closed path for 3rd harmonics
which is not there in ynyn

Answer / gunasekaran

this is used for auto transformer not YNyno. the following
purpose are there
1.third hormonic supression.
2.we can get another additional voltage so we can use for
auxillary.
3.reactive power compensation we can put the capacitor on
tertiary we can compensate the reactive power

What is static Device & Mechanical device? Is transformer a static device?

5 Answers   ABB, Emco,

---

if the stetor speed (N S) increase by 20% then the rotor speed will be increased by 20% is it true. ?

4 Answers  

---

If I want to replace a 26KW Slip ring Motor with a Squirrel Cage motor & Drive (for a Hoist Application). How can I approximate the Motor & Drive HP required in new Setup.

0 Answers  

---

HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.

0 Answers  

---

what should be the no load current of an induction motor

2 Answers  

---

HOW TO SET THE EARTH FAULT SETTINGS IN ACB????????????

0 Answers   General Electric,

---

why the electric train touches only one conductor n where is the neutral n it will be running 3-phase or 1-phase?

3 Answers  

---

what is ic 01,ic 06 ?is it types of cooling?

0 Answers   Bhel,

---

what is the effect of leading power factor

3 Answers   Aurobindo, R L Steels and Energy,

---

which theorem is used to analyse fault a)thevinin b)Norton c)Superposition d)jordan

1 Answers   FFC, NTS,

---

why neutral wire thin than phase wire in 4pole conductor

5 Answers   Hero Honda,

---

critically criticize the application of ring main unit in power system

0 Answers  

---