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):
