Types Of Transformers Based On Composition
Depending On The Composition Of The Core, There Are 3 Types Of Transformers.
- Core Type Transformer
- Shell Type Transformer
- Berry Type Transformer
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If You Want To Know,
Core Type Transformer
As Shown In The Figure, The Core Type Transformer Has Stampings L Type Of Core. The Sub Stampings Are Laminated To Each Other.
At The Core Where Primary And Secondary Winding Is Done. Both Windings Are Also Insulated From Each Other. The Companion Is Also Insulated From The Core.
Indings On This Core Are Done One After Another In This Way. You Can Easily Understand That The Windings In The Figure Are Shown Differently From Each Other. But In Reality The Two Indings Are On Top Of Each Other.
Such Cores Have Only One Route For Flux To Flow. Because Of This, There Is Little Evidence Of Leakage Flux In It. The Average Length Of This Type Of Core Is More, But The Area Of The Hole Cut In It Is Less.
Hence More Turns Have To Be Done On This Core. This Transformer Is Used For High Output Voltage.
Shell Type Transformer
As Shown In The Figure, The Core Type Of The Shell Type Transformer Has Stampings E Type And I Type. The Sub Stampings Are Laminated To Each Other.
Between The Core Where Primary And Secondary Winding Is Done. Both Windings Are Also Insulated From Each Other. And This Is Done Both Indices Primary And Secondary One After The Other.
While Winding On The Core, The Primary Winding Is Done First And Then The Secondary Winding On The Primary Winding. Doing So Reduces Evidence Of Leakage Flux.
The Core Of This Transformer Has 2 Routes For Flux To Flow. Being Located On The Winding Beach Limb, There Is More Evidence Of Leakage Flux. The Average Length Of The Core Of A Shell Type Transformer Is Shorter, But The Area Of The Cross-Cutting Hole Is More, So Fewer Turns Have To Be Made On This Core.
This Transformer Is Used For Low Output Voltage. Shell Type Transformers Are Used In Most Single Phase Transformers.
B Erry Type Transformer
It Is Also Called A Distributed Core Type Transformer. As Shown In Figure. The Core Of A Berry Type Transformer Is Made Of Core Disks. A Group Is Formed By Mixing One Side Of Each Disk And Winding Is Done On That Group.
The Number Of Stampings In A Berry Type Transformer Is As Much As The Flow Of Flux.
Problems With Berry Type Transformer
- The Design Of Berry Type Transformers Is A Bit Confusing.
- It Is Also A Bit Difficult To Maintain.
- Winding Is Difficult.
- Leakage Is More Critical Evidence.
This Is Why Berry Type Transformers Are Not Very Popular.
What Is The Difference Between A Core Type Transformer And A Shell Type Transformer ?
Difference Between Core Type Transformer And Shell Type Transformer
| Core Type Transformer | Shell Type Transformer |
| 1. There Is Only One Way Of Flux Flowing. | 1. There Are Two Routes For Flux Flow. |
| 2. Winding Occurs On The Limb During Core Days. | 2. Winding Occurs On The Middle Limb. |
| 3. Due To The Winding Being Outside, The 4. Winding From Outside Air Helps Keep The Wind Cool. | 3. The Core Is Cold Because The Winding Is On The Middle Limb. |
| 4. The Average Length Of The Core Is Longer. | 4. The Average Length Of The Core Is Shorter. |
| 5. The Area Of The Cross-Cutting Hole Of The Core Is Less. | 5. The Area Of The Cross-Cut Hole Of The Core Is More. Hence Fewer Turns Are Required. |
| 6. There Is Little Evidence Of Leakage Flux. | 6. There Is More Evidence Of Leakage Flux. |
| 7. Winding Is Easily Visible Due To Being On The Outer Limb, And Is Easy For Maintenance. | 7. It Is Difficult To Repair. And Winding Is Easy. |
| 8. It Is Suitable For High Voltage. | 8. It Is Suitable For Low Voltage. |
How Many Types Of Transformers Are There According To Voltage?
There Are 2 Types Of Transformers According To More Or Less Voltage.
- Step Up Transformer
- Step Down Transformer
Step Up Transformer
The Transformer Which Gives Its Primary Winding The Output Voltage By Converting The Given Voltage To More Voltage, Is Called Step Up Transformer .
Composition Of Step Up Transformer | Composition Of Step Sub Transformer
Its Composition Is Core Type Or Shell Type. The Winding Turns Of Step Up Transformers Are More Secondary Than Primary. Because Of This, The Primary Flux Is Cut By More Secondary Turns.
In Secondary Winding, More Voltage Is Produced By The Act Of Mutual Induction. Secondary Current Is Low Because The Secondary Voltage Is High. Therefore, The Primary Winding Is Of Short Turns And Thick Wire.
And The Secondary Winding Is Of More Turn And Less Thick Wire. Where The Voltage Has To Be Increased, Step Up Transformer Is Used.
Step Down Transformer
The Transformer Which Gives Its Primary Winding The Output Voltage By Converting The Given Voltage To A Lower Voltage, Is Called A Step Down Transformer .
The Composition Of This Transformer Is Also Core Type Or Shell Type. The Step-Down Transformer Has A Lower Primary Wire And More Turns. The Secondary Is Made Up Of Short Turns And Thick Wire. This Transformer Is Used To Reduce The Voltage.
Instrument Transformer
What Is Instrument Transformer
Instrument Transformer This Is A Type Of Step Up Transformer Or Step Down Transformer . But Its Secondary Winding Is Connected To A Lower Range Voltmeter Or Ammeter. It Is Used To Measure Current And Voltage Of HT Line. Current Transformer (CT ) Is Used To Measure The Current Of HT Line And Potential Transformer (PT) To Measure Voltage .
What Is Current Transformer? (Current Transformer- CT)
What Is Current Transformer?
It Is A Step Up Transformer. As Shown In Figure. The Primary Winding Of The Current Transformer Is Of Coarse Wire And Of Short Turns (One Or Two Turns Are Just One Turn In Many Places) .
The Primary Winding Of The Current Transformer Is Added To The HT Line Series. Secondary Winding Is Of Fine Wire. There Are More Turns. At The End Of The Secondary Winding, A Flame Range Of Ammeter Is Attached, Which Has A Side Meaning. Ammeter Is Of Low Range Interest, But Its Scale Is Divided According To The Ratio Of The Transformer.
Working Of Current Transformer How Does A Current Transformer Work?
Working Of Current Transformer | How Does A Current Transformer Work?
Due To The Current Winding Of The HT Transformer In The Series, The Current Current Flows Through The Entire Primary Winding. This Causes Fluxes To Form Around The Primary.
The Flux Produced In The Primary Is Cut By The Turn Of The Secondary Indices. Due To The High Turn Of The Secondary, High Voltage Is Created In The Secondary.
But The Current Of The Secondary Is Less Than The Proof Of The Ratio Of The Transformer . It Flows Through A Low Current Ammeter.
The Current Flowing In Ammeter Is Really Low But The Scale Of Ammeter Is The Current Transformer Ratio Is Divided According To Because Of Which We Get Readings Of The Actual Current Flowing Through The HT Line On The Ammeter. In This Way, It Is Easier To Measure The HT Line’s High Current Than The Low Range Ammeter.
Which Is Impossible Without Current Transformer. Because If The Ammeter Of Low Range Is Used At High Current Then It Will Burn. Therefore The Current Of HT Line Is Reduced Before The Current Transformer. And Then It Is Measured With A Low Range Ammeter.
Secondary Side Of Current Transformer Is Never Left Open?
Why Secondary Side Of Current Transformer Is Never Left Open?
If The Secondary Winding Of The Current Transformer Is Opened Due To Any Reason, The Current Does Not Flow From The Secondary.
Because Of This Fluxes Do Not Form In The Secondary. Now At This Time, Due To The Absence Of Opposing Flux To The Primary Flux, More And More Flux Flows In The Core.
High Voltage Is Produced In The Secondary. Insulation Between The Core And Winding Starts To Deteriorate Due To High Voltage . The Core Of The Current Transformer Becomes Very Hot. Due To Excess Heat, The Magnetic Properties Of The Core Are Lost Forever. And Sometimes, After Some Time, There Is Also A Possibility Of Current Transformer Blast.
Due To This , The Secondary Side Of The Current Transformer Is Never Left Open.. The Secondary Winding Circuit Is Always Kept Close By Adding A Low Range Ammeter To The Secondary Side. It Is Given A Side Meaning.
Why Is The Secondary Side Of The Current Transformer Earthed?
Why Is The Secondary Side Of Current Transformer Earthed?
There Is Always A Possibility Of A Secondary Winding Opening Due To Some Malfunction In The Ammeter Or For Some Other Reason. Because Of This, The Deception Described Above May Be Due To Current Transformer . Therefore, Despite Adding An Ammeter To The Secondary, The Secondary Side Of The Current Transformer Is Earthed .
Whenever Ammeter Is Removed From The Circuit, The Secondary Side Is Shortened. So That The Circuit Is Always Closed. So That The Current Transformer Can Avoid Possible Deception
Potential Transformer- PT
Potential Transformer: This Is A Step-Down Transformer. Secondary Winding Turns Are Thick Wire And Short Turns. This Is The Shell Type Transformer. As Shown In The Figure, The Primary Winding Of The PT Is Of More Turn To Fine Wire.
The Primary Winding Of The Potential Transformer Is Parallel Pairing Of The HT Line. A Low Range Voltmeter Is Attached At The End Of The Secondary Winding. (Normally The Voltage Of The Secondary Is Stepped Down To 110 V.)
Methodology Of Potential Transformer- PT. How Does A Potential Transformer Work?
The Primary Winding Of The Potential Transformer Is Parallel To The HT Line. Primary Fluxes Are Cut By The Turns Of Secondary Windings. Secondary Turns Cause Less Voltage To Create Less Voltage In Secondary.
This Is What The Voltmeter Associated With The Low Voltage Secondary Gets. In Fact The Voltmeter Gets A Low Voltage. But The Scale Of That Voltage Is Divided By The Potential Transformer Ratio . Therefore, The Reading On The Voltmeter Appears Equal To The Actual Voltage At That Time Of The HT Line. In This Way The High Voltage Of The HT Line Is Easily Measured With A Low Range Voltmeter
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