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Diversity factor is the ratio between sum of each individual maximum demand and the total maximum demand.
There are several equipment with different connected load and its maximum demand in an industry. Each equipment maximum demand could be different and might occur at different times. A well estimated or measured diversity factor would tell as to what percentage of total maximum load would actually occur. Diversity factor is always less than 1.
Diversity factor has to be obtained either by measuring the actual sum of each individual load and maximum demand or estimated and has relation to the transformer full load .
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What is the condition for zero voltage regulation of a single phase transformer?
zero volatge regulation means the terminal volatge of transformer at full load on a given power factor become equal to the rated teriminal volatge of transformer , it happens only for leading power factor in transformer
What is diversity factor in electrical calculation?
Try to think of a diversity factor as similar to a noncoincidental load factor. If your thermostat phyically limits you to only using either heat or AC at one time, then you can simply use the largest of the two as your load factor. With diversity, think of a college campus environment. If you are in class then the odds are your TV, oven, microwave, etc back in your dorm are probably not being used. R, Bill
What is the percentage of the no-load current in a transformer to its full load current?
2 to 5% of full load current
What do you understand by regulation in a transformer?
Regulation of transformer means percentage reduction of transformer secondary voltage due to transformer loading as compared to its no load voltage.Another AnswerA transformer's voltage regulation is defined as 'the change in its secondary voltage, from no-load to full-load, at a specified power factor, expressed as a percentage of its full-load voltage, with the primary supply voltage held constant'.
How do you find capacity of transformer?
If the load is single equipment, calculating the capacity of the generator or transformer is fairly straight forward. If the load is mix of various several different equipment it would be more complicated to arrive at transformer / Generator capacity. Complexity increases if you have to estimate some future unknown loads. The rating of the generator or transformer should be such that it is loaded optimally, average being say 80 to 95 %. Since maximum efficiency of generator or transformer generally occur at these range. Also this ensures that it is not overloaded continuously and there is room for occasional short time full load too. You need to check the data sheet of the transformer or generator for more correct information. One need to know the maximum load or peak load, average load and diversity factor and load factor. These values drive the decision on the rating of the transformer or Generator.
No-load and full load transformer?
A: a transformer will follow the rule of input output ratio with no load. As soon as a load is applied there will be changes in the ratio
What is the condition for zero voltage regulation of a single phase transformer?
zero volatge regulation means the terminal volatge of transformer at full load on a given power factor become equal to the rated teriminal volatge of transformer , it happens only for leading power factor in transformer
What is diversity factor in electrical calculation?
Try to think of a diversity factor as similar to a noncoincidental load factor. If your thermostat phyically limits you to only using either heat or AC at one time, then you can simply use the largest of the two as your load factor. With diversity, think of a college campus environment. If you are in class then the odds are your TV, oven, microwave, etc back in your dorm are probably not being used. R, Bill
What is the percentage of the no-load current in a transformer to its full load current?
2 to 5% of full load current
Why transformer power factor taken unity?
It isn't! A transformer operating at no load has a very low power factor.
What is voltage regulation of Transformer?
The change in output voltage from no load to full load defines the voltage regulation of that transformer.
What do you mean by no load of transformer?
Transformers voltage ratings are typically at full load. For instance, A 24 VAC, 10A transformer will have a terminal voltage of 24 when it is feeding 10 amps to a load. Since the transformer windings have some resistance, the transformer designer has to wind the transformer to put out more than 24 volts, since some of the voltage will be lost, dropped across the resistance of the secondary windings. But, according to Ohm's law, the voltage dropped across a resistance is proportional to the current (E=IR). If we take away the 10A load, there is no current, and therefore no winding voltage drop! The excess voltage the designer built in now appears at the terminals. This is the no-load voltage. In my example above, when we remove the 10A load, the output voltage of the transformer might rise to 26.4V. We would say the no-load voltage of that transformer is 26.4V The ratio of full-load voltage to no-load voltage is called the transformer's "regulation factor". It is calculated as: (no-load voltage - full-load voltage) / full-load voltage * 100. Ours is: ((26.4 - 24) / 24) * 100 = 10%.
What do you understand by regulation in a transformer?
Regulation of transformer means percentage reduction of transformer secondary voltage due to transformer loading as compared to its no load voltage.Another AnswerA transformer's voltage regulation is defined as 'the change in its secondary voltage, from no-load to full-load, at a specified power factor, expressed as a percentage of its full-load voltage, with the primary supply voltage held constant'.
Does low load in transformer lead to low power factor?
Power factor is determined by the nature (resistive, inductive, capacitive) of a load, not whether it is a low load or a high load.
What condition you get negative regulation for transformer?
When its load has a leading power factor.
When is a transformer closet to unity power factor?
When it supplies a resistive load.
What is load test on single phase transformer?
A load test on a transformer is done to make sure it stays within its designed temperature range while on full load.
