Make or Break A Circuit Manually or By Remote Control Under Normal Conditions.
BREAK A CIRCUIT Automatical Under Fault Conditions (Like Overcurrent, Short Circuit, ETC).
Make A Circuit Manually or by Remote Control under the Fault Conditions.
Controlling and Protection of Different Parts of the Circuit Like Switch Gears, Transformers, Motors, GENERNATORS/ALTERNATOR ETC., Which Leads The System Stable and Reliable.
There are different types of Air Circuit Breakers available in the market and we will dischass one by one
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The Following Fig Shows the Main and External Parts of An ACB.
Off outton (o)
On Button (i)
Main contact position indicator
Energy Storage Mechanism Status Indicator
Reset button
LED Indicators
Controller
"Connection", "TST" and "IsoLized" Position Stopper (The Three-Position Latching/Locking MeChanism)
User-supplied padlock
Connection "," and "and" section "of the positive integration
Connection (CE) section, (CD) Test (CT) Position Indication Contorys
Rated name plate
DIGITAL DISPLAYS
Mechanical Energy Storage Handle
Shake (in/out)
Rocker Repository
FAULT TRIP Reset Button
The following fig shows the internal construction of Air Circuit Breaker
1. Sheet Steel Supporting Structure
2. Current Transformer for Protection Trip Unit
3. Pole Group Insulting Box
4. Horizontal Rare Terminals
5A. Plates for FIXED MAIN CONTACTS
5B. Plates for Fixed Arcing Contorys
6A. Plates for Main Moving Contorys
6B. Plates for Moving Arcing Contorys
7. Arcing Chamber
8. Terminal Box for Fixed Version -SlIDING CONTACTS for Withdrawable Version
9. Protection Trip Unit
10. Circuit Breaker Closing and Opening Control
11. CLOSING Springs
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Arc Voltage Can Be Increased by Cooling Arc Plasma. AS Soon as the Tempeature of Arc Plasma Moticle in Arc Plasma Is Reduced, More Voltage Gradient Will
By Splitting the Arc Into A Number of Series Will Increases the Arc Voltage.
TheRE Four Types of ACBS Use in the Control and Protection to Maintain and Stable Operation of Switch Gears and Indoor Medium Voltage.
Plain Break Type Air Break Circuit Breaker Or Cross-Blast ACB
Magnetic Blowout Type Air Break Circuit Breaker
Air Chute Air Break Circuit Breaker
Air Blast Circuit Breaker
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PLAIN Air Circuit Breaker Or Cross-Blast Air Circuit Breaker:
Inner Walls of Arc Chute Are Shaped in Such A Way that Arc is not only forced into close project, but will drive into the serpentine chanted on arc chute over.
Higher thanStatem Voltage. They are preferable choice in low voltage application.
Air Chute Air Break Circuit Breaker
Closed Before and Open after the Main Contorys of the Circuit Breaker.
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Magnetic Blowout Type Air Break Circuit Breaker
Air Blast Circuit Breaker:
This type of circuit breaker is used for system voltage of 245 kv, 420 kv and event more.
Air Blast Circuit Breaker Has Further Divided Into Three Categories:
Axial blast breaker
Axial blast with slice moving contact.
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Axial blast breaker
Axial blast with slice moving contact
The Moving Contory is Fitted Over A Piston Support by A Spring. The Blast Transfers Arc to Arcing Electrode.
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Advantages
Air Blast Circuit Breaker is a Suitable Option to use where firefate is required becape of Lesser Arc Energy
The risk of fire is eliminated in the operation of Air Blast Circuit Breaker.
Air Blast Circuit Breaker is Small in Size, BeCAUSE of the Growth of Dielectric Streangth is so rapid (Which Final Contact Gap NEEDED for Arc Extinction Is Very Small).
Speed of Circuit Breaker is Much Higher During Operation of the Air Blast.
Arc Quenching is Much Faster
The duration of the arc is same for all values of carent.
Stability of Operation Can Be Maintained and Depends on Speed Operation of Circuit Breakers.
It Requires Less Maintenance.
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Disadvantages
The Air SUPPLIER PLANT Requires AdDitional Maintenance.
It contains high capacity air compressionor.
There is a chance of Air Pressure Leakage from the Air Pipes Junction.
There is chance of a high rate rate of re-Stricying Voltage and Current Chopping.
The Air has relatively lowEer arc excitation properties.
It is using for propection of plants.
It is using for common protection of electrical machnes.
It used for propection of transformers, capacitors and generators.
ACB IS Also used in Electricity Acb Breaker Sharing System and ngd About 15kv.
Also use in low as well as high voltage and calendes applications.