what is the standards (recommended values )for the 13.8-132 kv transformer oil tests.?
358232
this might be helpful..\n\nhttp://www.elkraft.chalmers.se/Publikationer/HSP.publ/Abstract/2003/ChandimaLic.pdf
663573
It's doubtful there is a standard. They come in a variety of sizes, shapes and materials. See, for instance, the ref. below.
702129
I've found a good site introducing and explaining the voltage and phase relationships between delta and wye 3 phase transformers. Try www.elec-toolbox.com/usefulinfo/xfmr-3ph.htm\nI hope that this proves useful for your research.
847868
Are you talking about Distribution transformers ? Then that 3-phase transf. becomes free floating, which means the 'nutral' line receives ALL the phases WITHOUT nutralising them to the Earth reference potential (Standard 0 volts) and hence all the SINGLE PHASE equipment connected to power will experience the 3-phase voltage (up to 440 volts) rather than single phase (about 230 volts). You know what it will do. In case of single phase transformers, and looking at most common load-connection configurations, not much will happen. But you may find more interference on the electronic equipment connected to it.
906536
These are a published value.  The actual voltages vary as you can see from this quote from a power plant site \n\n"POWER PLANT CAPABILITY: The two hydroelectric power generators boast a generating capacity of 92,000 kilowatts. The estimated annual energy output is 205 million kilowatt-hours."\n\nAnd none of the values quoted are a multiple of 11.  It appears that the source your using just happened to have values that were multiples of 11.\n\nA quick look on Google listed quite a number of plants that produced values that had 13800kv to 205 million kv.\n\nChance that the ones you looked at were multiples.\n\nBest of luck in your project.
869383
(m)\n\n transformer is an electrical device used to convert AC power at a certain voltage level to AC power at a different voltage, but at the same frequency. \n\nThe construction of a transformer includes a ferromagnetic core around which multiple coils, or windings, of wire are wrapped. The input line connects to the 'primary' coil, while the output lines connect to 'secondary' coils. The alternating current in the primary coil induces an alternating magnetic flux that 'flows' around the ferromagnetic core, changing direction during each electrical cycle. The alternating flux in the core in turn induces an alternating current in each of the secondary coils. The voltage at each of the secondary coils is directly related to the primary voltage by the turns ratio, or the number of turns in the primary coil divided by the number turns in the secondary coil. For instance, if the primary coil consists of 100 turns and carries 480 volts and a secondary coil consists of 25 turns, the secondary voltage is then: \n\nsecondary voltage = (480 volts) * (25/100) = 120 volts \n\nA transformer may have multiple secondary coils to feed a number of electrical loads; however, power must be conserved, so the sum of the output power must equal the sum of the input power minus losses. Energy losses in transformers are due to a number of factors: these are copper losses in the coils themselves due to material resistance, core losses due to hysteresis (the reluctance of the material's magnetic domains to reverse during each electrical cycle), and eddy currents.
803633
It is a step down transformer.\nNs/Np = 6/220\nwhere Ns is the number of turns in the secondary and Np is the number of turns in the primary.
595330
If you are in the US, there is a building codebook that has tables for all wire sizes and their ratings.  Its called the NEC handbook
249584
u can find ur specification at \n\nwww.ambion.com
851608
WYE connections reference the line values of current and voltage to a "hard-wired" neutral. This means  \n (line voltage) = 1.732 * (phase voltage)\n (line current) = (phase current)\nThis is a much easier system to use when manufacturing an electric machine ... there will be a "neutral" - complete with leads - that can be used when troubleshooting.\n\nDELTA connections reference the line values of current and voltage to a "theoretical" neutral. This means \n (phase voltage) = (line voltage)\n (phase current) = (line current) / 1.732\nBecause of the "theoretical" nature of the neutral connection, the winding can experience far harsher effects from harmonics than the standard WYE version. Thus it isn't used as often in large machines ... although it's fairly common in smaller (<100 HP) designs.\n\nAny 3-phase machine can be used in either format; in fact, most multi-speed windings employ one of each.\n\nThe simplest advantage may come when looking at transformers, though. With a WYE-DELTA transformer, there is no possibility of ground faults between the input and output sides (unless, of course, a major accident happens!). IT also has an immediate 1.732 ratio in terms of voltage/current ... even if the turn count is the same on both sides.
278773
486A for Wire Connectors.\nFor secureness test follow the Pull Test requirement per UL. \n\n\nCheck out the following link:
390904
a ditisbution transformer is much larger . but they both do the same job .they either step up or step down current.
416798
105W\n\nA transformer changes the voltage, but inversely alters the current to the same degree. Therefore, using P=VI, the power is always the same.
398806
here is one of the datasheets available on the internet:\nhttp://www.ee.washington.edu/stores/DataSheets/74ls/74ls73.pdf
1050051
Technically, you don't convert mA into VA in any AC circuit!  One is a measure of current flow, the other is a measure of power.\n\nNow if you want to figure out the power of the transformer, simply multiply the amperage by the voltage.\n\nP = 12V X 800mA = 12V X 0.8A = 9.6 VA or 9.6 watts.\n\nNow you can think of the power in terms of VARs (volt amp reactive), but those are typically used in where you have either a(an) inductive and/or capacitive load and use imaginary numbers to solve such problems.
221557
.01uF / 1210/ 50v/ avx /digikey.com/\nMIKE
222925
Dig here:\nhttp://www.scientifics.com/transformers.htm