Tool to design DOL starter and Start to Delta.
This tools is an Microsoft Excel Spreadsheet.
Components used in DOL starter and Star- Delta Starter- Fuse Circuit Breaker Over load Relay setting Contactor
DOL Starter & Star-Delta Converter- Tool
Following information need to be entered to design DOL starter and Star - Delta
System Voltage Phase Type of Motor Motor Size Motor Code Motor Efficiency Motor RPM System P.F Application of Motor
Following Parameter are calculated with spreadsheet tool.
**Motor Torque / Current** Motor Rated Tourque (Full Load): Motor Rated Tourque (Full Load): Motor Starting Torque: Lock Rotor Current IL(Min): Lock Rotor Current IL(Max): Motor Starting Current : Motor Full Load Current (Line): Motor Full Load Current (Phase): **Fuse (As per NEC 430-52)** Non-Time Delay Fuse (Max) Time Delay Fuse (Max) **Circuit Breaker (As per NEC 430-52)** Instantaneous Trip Circuit Breaker (Max) Inverse Time Circuit Breaker (Max) **Over Load Relay Setting** Relay Min (70% of FLC Phase): Relay Max (120% of FLC Phase): OR Relay Setting (100% of FLC Line): **Contactor** Type of Contactor: Making / Breaking Capacity of Contactor: Main Contactor (100% of FLC Line):