A) Which transformers are equipped with tap changers? b) How does a tap changer work (drawing!)? c) On-load t?

Transformers: a) Which transformers are equipped with tap changers? b) How does a tap changer work (drawing!)? c) On-load tap changers of unit transformers in power plants can be operated when the plant feeds electricity into the network. What is affected if the tap changer is operated (and the tap is changed)?A) Which transformers are equipped with tap changers? b) How does a tap changer work (drawing!)? c) On-load t?Transformers with high capacity equipped with tap changer,



The voltage ratio can be adjusted in step in the unenergised condition by off -load tap-changers (for example tapping range are +/-2.5 %,+/-4% or +/-5%)

Transformers under load equipped with ON-LOAD Tap-changer to adjast voltage ratio taping range are (+/-11%,+/-16%,or+/-22)



Transformers with less than 1 Mva generally equipped with off load tap changer ,range of voltage( to have constant output voltage )is changed in off load condition ,High Voltage Oil Transformers with High power capacity equipped with On Load Tap Changer(OLT) like 40 Mva TransformerA) Which transformers are equipped with tap changers? b) How does a tap changer work (drawing!)? c) On-load t?http://wiki.4hv.org/index.php/Transforme鈥?/a>



Here is a link to a bunch of examples for you to look at and read about...The answer to your questions are in this article but basically a transformer is an iron core with loops of wire around it with a ratio of loops in to loops out this ratio will give the voltage output ...a percentage tap generally 3% is just a bit off the exact loop for the voltage so you can adjust the output by adjusting the tap location...In power transformers there is generally 3 -3% taps above and below the actual midline output...If your incoming power is a little low voltage just change the tap and get back into the range the NEC National electrical code call for 3% ...this is the allowed VD voltage drop...It also is a function that can create a

false demand as you know the motor still wants the wattage and if you lower voltage your amperage goes up so in effect by starving your system you could easily increase the Demand factor the power company is looking at...Get your lines bbalanced and keep your Power factor at unity and pay a smaller bill by getting a percentage tap transformer....There ya go From the E...A) Which transformers are equipped with tap changers? b) How does a tap changer work (drawing!)? c) On-load t?do you post all of your homework problems here for others to do for you?