DOL Starter circuit diagram control and power connection | Single Line diagram.

DOL (Direct On-Line) starter ek prakaar ka motor starter hai jo ek 3-phase induction motor ko start aur control karta hai.
DOL Starter ke Components:
1. *Contactors*: Yeh electrical switches hote hain jo motor ko start aur stop karte hain.
2. *Overload Relay*: Yeh relay motor ko overload se bachata hai aur motor ko stop karta hai agar overload hota hai.
3. *Fuse*: Yeh electrical safety device hai jo motor ko short circuit se bachata hai.
DOL Starter ka Working:
1. *Start Button Press*: Jab start button press hota hai, to contactor energize hota hai aur motor ko start karta hai.
2. *Motor Start*: Motor start hota hai aur overload relay motor ki current ko monitor karta hai.
3. *Overload Protection*: Agar motor ki current overload limit se adhik hoti hai, to overload relay contactor ko de-energize karta hai aur motor ko stop karta hai.
4. *Stop Button Press*: Jab stop button press hota hai, to contactor de-energize hota hai aur motor ko stop karta hai.
DOL Starter ke Advantages:
1. *Simple Design*: DOL starter ka design bahut simple hai aur iske components kam hote hain.
2. *Low Cost*: DOL starter ka cost kam hota hai kyunki isme kam components hote hain.
3. *Easy Maintenance*: DOL starter ka maintenance bahut aasan hai kyunki iske components kam hote hain.
DOL Starter ke Disadvantages:
1. *High Starting Current*: DOL starter mein starting current bahut high hota hai, jo motor aur electrical system ko nuksan pahuncha sakta hai.
2. *Limited Overload Protection*: DOL starter mein overload protection limited hota hai, jo motor ko nuksan pahuncha sakta hai.