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Direct Online Starter

A Direct Online Starter (DOL Starter) is a widely used starting method of electric motors. A motor starter is an electrical or electronic circuit composed of electro-mechanical and electronic devices which are employed to start and stop an electric motor. Regardless of the motor type (AC or DC), the types of starters differ depending on the method of starting the motor. A DOL starter connects the motor terminals directly to the power supply. Hence, the motor is subjected to the full voltage of the power supply. Consequently, high starting current flows through the motor. This starter is cost wise cheap, it does not reduce the starting current of the motor. The starting current of the DOL starter is 6 to 7 times of the full load current. This type of starting is suitable for small motors below 5 HP. A very well-known motor starter is the DOL Starter of a 3-Phase Squirrel-Cage Motor. This starter is sometimes used to start water pumps, compressors, fans and conveyor belts.
 
Specification:
 
Reference Standards: Conforms to IS 13947-4, IEC 60947-4.
HP Range: 2 to 30 HP.
Voltage: 415 Volts AC.
Motor Rating: AC-3 Duty.
Version: SS Enclosure.
Protection Class: IP 54.
Reset Mode: Manual & Auto.
Rated insulating voltage: 690V.
 
Brands Available: L&T, SIEMENS, HAVELL’S, SCHNIDER, BCH, etc.