dear sir, Thanks for the reply. Because of power factor. You can create a series-parallel arrangement of resistors. I knew the . 50KVA is a three phase not a single phase . Use MathJax to format equations. HT Side cable? Transformer transmit high electrical energy so reduce the unite of voltages level engineers used kilo(K) unit for transformer. Im try to understand the behavior of a transformer 11kv/415v. It only takes a minute to sign up. my calculation is for domestic 18×05=90KW ÷ 2 ÷ 0.9 = 50, commercial 15+20=35KW ÷ 1.5 ÷ 0.9 =25.92, Total KVA 75.92 The formula which I mention is belongs TSSPDCL. Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. please inform it’s urgent to me. Can you have a small transformer or is it a big thing? That would spread out the power dissipation. In other words, for a given load (with, hi sir, how do the transformer designer calculate the turns, emf, loss, flux, area if we say we need1600KVA. Diagonalization of Hermitian matrices vs Unitary matrices, Improvements in Saturn V, LM and CSM after Apollo 10. My guitar has no sound when the gain knob is turned off. or "Attention! Is it safe? with 6.0 KV rating of transformer and If you feed 6.6 KV to it “about 10 % higher” the transformer will FAIL. MathJax reference. Then the voltage is based on the Number of Turns . Multiply voltage and current to get the power draw of the load in watts. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. I use the wall transformer power supplies designed for home CCTV cameras - 12v at 500 milliamps. Note: 1.73 is gotten from Root three (root 3) Take care! – Examples in British and SI System, Thevenin’s Theorem. If the device is 300 watts, then you will need to buy a transformer that is also 300 watts. 1.6MVA, 33KV/415V (8 NO). So, that transformer rated in KVA mean Kilo volt Ampere. Sir ,why we dont consider power factor for transfrmer but for generator or motor. Transformer winding consists Copper and copper losses are occurs in winding due to current(I). Grandpa's weird clock, What's the word equivalent to, "Announcement! The KVA should be for appearance power S NOT in P active power, however if you want to calculate in P active power, in this case you have to take into consideration the power factor and the result will be in KW not in KVA. Why Transformer rating in kVA and not in kW? 2. Why electrostatic force is felt in straight lines? Please give me the formula for total load and required transformer rating. How does one calculate the high voltage mains wattage, if the transformer … S (VA) = P (W) x pf Here is what is running through R1: 38.4 volts 0.17 amps 225.88 ohms 6.528 watts. RAJ LAHARE, Dear Jayawanta, Your query is not clear raj lahare, Hello i want to know HV and LV coil resiatance and inductance values of 11kV/440V rating 100kVA transformer, Dear Mahantosh, Refer IS 2026 and You will get all the details RAJ LAHARE. Now my doubt is I have total 125kw load so how much rating of transformer I require. So for proper Guidance you may send Transformer”s number plate/ name plate details directly to me “rajlahare@gmail .com “. What do you call pieces of cardboard with political slogans on them? But I am not sure what transformer/driver to use for these lights. Then, sum your answers to get the total current load of the 132kv. RAJ LAHARE, pls , what is responsible for high voltage in a distribution transfomer, 11/.415kv, 100kVA after one of the phases coil that got burnt, has just been replaced, how do i determine the correct rating of fuse of 11/.415kv,500KVA transformer, both primary and secondary side.

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