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For parallel operation of let's say two Transformers, following limiting conditions must be met.
1- The turn ratios must be same.
2- The percentage impedance must match.
3- The X/R ratios must be same.
The load sharing is done according to the kVA ratings and %Z of the transformers. The formula is as under:
load taken by TF1 = ((kVA1/%Z1)/((kVA1/%Z1)+(kVA2/%Z2)))*total load
Similarly,
load taken by TF2 = ((kVA2/%Z2)/((kVA1/%Z1)+(kVA2/%Z2)))*total load
An example will make the concept easier.
For example we have to parallel a 1000kVA TF of 5%Z with another of 1200kVA having 5.5%Z to supplay a load of 800kVA.
load taken by TF1= ((1000/5)/((1000/5)+(1200/5.5)))*800= 382.6kVA
load taken by TF2= ((1200/5.5)/((1000/5)+(1200/5.5)))*800= 417.4kVA
What else can I help you with?
How much current does a three phase 11kv 50kva transformer draw per phase no load and fully loaded and is there any significant loss in the average delta star transformer?
Fully loaded - 2.62 amps at 11kV. The no load depends on the transformer design, but it will usually be significantly less than the full load amps (not sure on this size, but on larger transformers it is typically ~.05 - .1% full load, so you'd be looking at ~2.5 mA RMS). The connection type is not important. Transformers are very efficient, thus there is not a whole lot of loss in the "average" transformer. The actual loss will depend on the design criteria of the transformer.
What is the object called that uses electricity in a circuit to make something happen?
The object that uses electricity in a circuit to make something happen is known as the load. Usually the load is rated in watts.
What are the types of transformer?
There are a variety of types of transformers. These include autotransformers, polyphase transformers, leakage transformer, resonant transformers, as well as audio transformers.the decepticons are the bad guys, and the autobots are the good guys. bumblebee and optimis prime are autobots. megatron is a decepticon.
What planet does transformers come from?
The Transformers come from the planet Cybertron. Cybertron is a fictional planet and the home world of the Autobots and Decepticons in the Transformers universe.
Application of instrument transformer in power system?
Instrument transformers are used in power systems for measurement and protection purposes. Current transformers (CTs) are used to step down high currents to a measurable level for instruments and relays, while potential transformers (PTs) are used to step down high voltages. By providing accurate and isolated measurements of current and voltage, instrument transformers ensure the safety and reliability of the power system operations.
What are the advantages of automatic load sharing of transformers?
advantages for automatic load sharing of transformer with protective analysis
When did Transformers Decepticons happen?
Transformers Decepticons happened in 2007.
When did Transformers Autobots happen?
Transformers Autobots happened in 2007.
What would happen if optimus died in transformers dark of the moon?
it would be the end of transformers
When did Transformers Comic UK happen?
Transformers Comic UK happened in 2007-07.
What is paralleling of transaformers?
Paralleling transformers will increase the effective capacity available to the load. There are important requirements before transformers can be paralleled, so it's simply not the case of connecting any two transformers in parallel.
What is the minimum load have to go for a new transformer?
All transformers have a power rating given in kVA which determine the maximum load that can be connected to that transformer.
What is mean of resistive load?
i think it is high value resistance as it is used in Transformers to get the output voltage.
Is transfomer output voltage designed to full load?
Transformers are designed to run at specific voltage levels, and they are designed to handle a maximum load (known as "full load"); this load is usually based on the amount of current that can be pushed through the transformer without overheating, so if 1/2 voltage is applied, full load would be 1/2 of normal. Some "complicated" transformers may have other limitations (dual voltage transformers may have two different full loads specified, and they may not be directly proportional relative to voltage).
When did Invade-a-Load happen?
Invade-a-Load happened in 1987.
Why alternating current is use for electrical system?
The transmission of electrical energy requires very high voltages (for a given load, the higher the supply voltage, the lower the load current). To increase/reduce these voltages, you need transformers. Transformers are AC machines; they do not work with DC.
What is the no load current of 1600 kva transformer?
No load current depends on the design of the transformer, and what voltage it is energized at. It will typically be below 1% of full load, and can be significantly below 1% for utility sized transformers.
