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.
11 kv
West Bengal, Jharkhand
No k.v. Is not a good school.chemistry sir hardly comes to our class.
it varies from power station to power station in vtps we have 15.75 kv
the power can flow either way through autotransformer (345/120 kV) ?
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.
it is depends on the rating of distribution transformer,e.g if there is 100 kva, then it will take 5.25amp.
It isn't necessarily the case. In the UK electricity distribution system, you have 33/11-kV step-down tranformers (where 11 kV is the secondary side) or 11-kV/400-230-V step-up transformers (where 11 kV is the primary side).
It depends on the design of the transformer but 1 MVA is a common size for an 11 kV / 415 v three-phase transformer.
Transformer does not convert MVA to KV. MVA is unit of power, where as KV is unit of Voltage. Transformer converts voltgae. Step up or Step down.
A megger would not be suitable for testing insulation resistance of a 13.2-kV transformer, as the transformer's voltage rating is significantly higher than the output voltage from a megger.
If you have to ask this question, you shouldn't be dealing with 11,000V
We use double rating transformer, in this we have two type of cooling . ONAN & ONAF, According to cooling we have two rating.
These are two incompatible units. Ignoring the kilo- prefix (1000), we have V (Volts) and VA (Volt-Amps). VA is a rating of power, typically on transformers and related equipment. So while you cannot _convert_ from KV to KVA, you can calculate one from the other. For example, a 240V transformer rated to supply 100A of current would be a (240*100 = 24000) 24kVA transformer. Power = Volts * Amps.
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'.
6.6 kV and 11 kV refer to the voltage rating of the fuse. 160A refers to the current rating. The 6.6 kV fuse is safe to use in a circuit with a voltage up to 6.6 kV and no greater. The 11 kV fuse is safe to use in a circuit with a voltage up to 11 kV.
A 132 kV substation is normally called a grid substation. It would normally use two or more 132/33 kV transformers rated at 90 MVA, or two or more 132/11 kV transformers rated at 30 MVA.