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What is unit transformer?
UniT transformer are step up transformer which is connected to generating house & step up voltage from 11/15kV votlage to 220/400kV voltage level as requirement or line design parameter. It is just like transformer but connected to unit of the generating house that's why we called it unit transformers.
What is the function of transformer 33kv?
A '33-kV transformer' is a three-phase primary-distribution transformer, used in the UK's electricity system to step down the 33-kV primary-distribution voltage to the 11-kV secondary-distribution voltage -the lowest voltage used in the high-voltage distribution system. These transformers are categorised as 'power transformers', and are located in what are termed 'primary substations'.
How do you calculate full load current for 10000 KVA transformer?
Divide the VA by the voltage. But this transformer is probably a 3-phase one, maybe working on a 11,000 volt system, and in this case the live-to-neutral voltage is 6351 v and each phase supplies 3333 kVA. In this case the current supplied is 3,333,333 / 6351 or 525 amps on each phase. This is a common type of transformer in electricity supply.Another AnswerAssuming you are talking about the secondary line current of a three-phase transformer, you simply divide the rated apparent power of the transformer by (1.732 x rated secondary line voltage).Don't confuse line currents with phase currents. Line currents travel in the lines that connect the transformer with the load, whereas phase currents circulate within the windings.For example, let's assume you have a 10 MVA primary distribution transformer, with a rated secondary line voltage of 11 kV. The full load current would be:secondary line current = 10 000 000 / (1.732 x 11 000) = 525 A
Why kva rating of transformer is always multiple of 11?
It's not - I have seen 50kVA, 100kVA,...15000kVA, 36000kV, 180000kVA to name a few examples. Near where I live, I don't believe there are more than a few transformers rated in multiples of 11 as you state.
What is voltage ratio on a transformer?
The voltage ratio of a potential, or voltage, transformer (PT or VT) depends upon the primary voltage to which it is connected. Accordingly, its voltage ratio varies considerably, as there is huge variety of system voltages throughout the world.Typically a VT's secondary voltage is standardised at 110 V which will match the full-scale deflection of a voltmeter connected to it (although it can also supply protective relays), while its primary voltage is then matched to the voltage of the system to which it is connected: in the UK, for example:11-kV:110 V33-kV:110 Vetc.
Why differential relay is not used for 11kv transformers?
It depends what you mean by an '11-kV transformer'; do you mean a primary transformer (33/11-kV transformer) or a distribution transformer (11-kV/400-230-V transformer). Differential protection IS offered on primary transformers.
What is the maximum capacity of 11kv transformer?
It depends on the design of the transformer but 1 MVA is a common size for an 11 kV / 415 v three-phase transformer.
What is date of birth 11 11 1988?
November 11, 1988 is that date of birth
When was Date Hidemune born?
Date Hidemune was born on 1591-11-11.
What is unit transformer?
UniT transformer are step up transformer which is connected to generating house & step up voltage from 11/15kV votlage to 220/400kV voltage level as requirement or line design parameter. It is just like transformer but connected to unit of the generating house that's why we called it unit transformers.
How many dewa cable from transformer to mdb?
11 CABLES 630 mm2 single core
What is the last date of submit the form?
11/11/2011 this is the last date for submission
What is the last date of gpsc form submition?
11/11/2011 this is the last date for submission
What word begins with p and ends with e for the date 11 11 2011?
palindrome. A palindrome is the same forwards and backwards, like the date written 11/11/11.
When does the elder scroll 5 come out?
Elder Scrolls V: Skyrim comes out on 11/11/11
Its possible to convert 11 kv to 5v by potential transformer?
If you have to ask this question, you shouldn't be dealing with 11,000V
How do you calculate rating of 11 kv transformer?
The KVA rating of a transformer is based on how much heat the transformer can dissipate. The BIL rating is based on how well the windings are insulated. There are other "ratings" as well. Rough calculations can be done, but tests are generally performed to prove the calculations (transformer designers will design on the conservative side to insure the transformer meets specification). These type of calculations are best done by a computer. You will struggle to determine the hot spot max temperature rise in a transformer by hand.
