DOL Starter (Direct Online Starter) Kya Hai?

DOL Starter ek simple aur efficient starter hai jo **3-phase induction motors** ko directly full voltage par start karta hai. Ye **contactor, overload relay, aur push buttons** ka combination hota hai.

DOL Starter Ka Circuit Diagram

DOL Starter Ke Basic Components:

• MCB (Miniature Circuit Breaker): Short circuit ya overload hone par supply cut off karta hai.
• Contactor: Ek electromagnetic switch hai jo motor ko ON/OFF karta hai.
• Overload Relay: Agar motor me zyada current flow ho to ye system ko protect karta hai.
• Start Button: Motor start karne ke liye use hota hai.
• Stop Button: Motor ko band karne ke liye hota hai.

DOL Starter Ka Working Principle

Jab **start button** press kiya jata hai to **contactor energize** hota hai aur motor ko **full voltage supply** milti hai. Jab **stop button** press hota hai to **contactor de-energize** ho jata hai aur motor band ho jati hai. Overload condition hone par **overload relay** motor ko automatically stop kar deti hai.

© 2025 Electrician Home | Sabhi Adhikar Surakshit