0
A Direct-On-Line (DOL) starter is an electronic 3-phase motor-control system which offers soft starts in DELTA configuration. DOL starters are now replacing the use of manual or semi-automatic "star-delta" starters.
In this way of starting a 3-phase motor, full line voltages are applied to the motor through relays and contactors. The DOL is nowadays the most common type of 3-phase motor starter used.
It has a "closing circuit" and an "opening circuit". The closing circuit is for applying the service lines to the motor and the opening - or "tripping" - circuit protects the motor by cutting-off (or "tripping") power to the motor from the service lines if there is any overload condition, a single phasing fault, etc.
For more information please see the answers to the Related Questions shown below.
Still curious? Ask our experts.
Chat with our AI personalities
Blake
Maxine
JordanAdd your answer:
Earn +20 pts
Direct online starter circuit diagram?
There is a link below for the DOL starter circuit.
What is the advantage of DOL starter?
for smooth operation and also to reduse starting current
What is the difference between dol and hdol?
Direct on line starter and Heavy direct on line starter...... in HDOL CT is fixed.
Why DOL starter using to start motor?
Yes up to certain rating and application a motor can be started on DOL. Beyond a rating different methods need to be used to limit the starting current.
What is the difference between a star-delta starter and a DOL starter?
At least two types of 3-phase electric motor starter are available: Direct-On-Line (DOL) and Star-Delta.For more information about how they work, and the differences between them, see the answers to the Related Questions shown below.
