ITI Electrician Advantages of AC Polyphase System: Complete Notes in Hindi
ITI Electrician Advantages of AC Polyphase System: Complete Guide in Hindi
Bharat Skills aur NIMI NCVT syllabus ke mutabiq, ITI Electrician trade ke liye **AC Polyphase System (बहु-कला एसी प्रणाली)** ki visheshnayein aur laabh samajna behad zaroori hai. Single phase system ke mukable polyphase system (jaise Three-phase system) ke paas kai anupam takniki aur aarthik fayde hote hain.
Modern power generation, transmission aur heavy industrial applications me keval polyphase system ka hi upyog kiya jata hai. Aayiye iske mukhya labho ko विस्तार se samajhte hain.
1. AC Polyphase System Kya Hai?
Aisa AC system jisme do ya do se adhik (aamtaur par 3) alternating voltages hoti hain jo ek nishchit phase angle par chalti hain, use Polyphase System kehte hain.
2. Single Phase ke Muqable Polyphase System ke Mukhya Fayde
Adhik Power Output
Polyphase generators aur motors ek hi size aur weight ke single phase machines ke mukable lagbhag 1.5 se 3 guna zyada power output deti hain.
Self-Starting Motors
Polyphase motors (jaise 3-phase induction motor) natural roop se self-starting hoti hain, jabki single-phase motors ko start karne ke liye auxiliary winding ya capacitor ki zarurat padti hai.
Constant Power (Sthir Shakti)
Polyphase circuits me instantaneous power hamesha sthir (constant) rehti hai, jisse machines me vibration aur noise kam hota hai.
Transmission Economy (Copper ki Bachat)
Lambi doori tak power bhejne ke liye polyphase system me single phase ki tulna me kam copper ya conductor material ki aavashyakta padti hai.
3. Flexibility aur Dual Voltage Option
Polyphase system (Star aur Delta connections ke madhyam se) ek hi samay par do alag-alag voltages pradan kar sakta hai:
- Gharelu upkaron ke liye **Line-to-Neutral** voltage (jaise 230V).
- Heavy industrial motors ke liye **Line-to-Line** voltage (jaise 415V).