HT & LT Distribution System in Electrical Engineering । PCC । MCC । In Hindi । Subhranil Mallick 

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Thank you for watching my video 🙏 Ok, when common bus is fed from two separate source say grid and dg, in that case no bus coupler is required only because bus is common. BC is used where we want to couple two separate bus section. Example, suppose PCC-1 and PCC-2 to connect with each other that case BC is required. Now.... Protection, if we want to keep both separate sources alive or alive during change over system that time synchronisation system to be taken in scope. If we don't want the above said point then electrical interlocking to be established with mechanical interlocking for both source breaker.... Important point: if we consider acb for main incomer and mccb for dg source then only electrical interlocking will be possible not mechanical. My recommendation is use same type of switch gear for source. Hope I made myself clear...... Thank you again

Hi. Thank you for watching the video and raising your question. In this video I have tried best to share the knowledge on 'how ht and lt distribution are being done in industry. Power plant - where power is being generated and distributed (some cases), most power plant generates power and delivery to the grid (transmission). Subsstation - where transmitted power are taken care through step down the voltage and make ready for distribution.

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Okay, can you please tell the purpose of that breaker? Generator breaker or distribution transformer breaker or generator transformer breaker??

Will do very soon

Breaker used to make or break the circuit under healthy and faulty condition respectively. Used as a protection device.

Hello Neeraj Ji Thank you for watching the video and raising your question. But please say specifically which type of in coming panel? Like MCC incomer, PCC HT incomer, PCC LT incomer etc

To ensure electrical protection and isolation when required

Transformer low voltage side Through cabling or bus duct

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