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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.
What else can I help you with?
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.
How do you work Dol starter?
A DOL or direct on line starter works by connecting the motor terminals directly to the power supply when they are energized. A DOL starter is the simplest type of motor starter.
Can DOL starter use for 50kw motor?
The answer is yes. I had seen 110kW pump start on DOL starter
Why DOL starter is used in industries in-spite it has disadvantages?
DOL starters are used in industries in-spite of its disadvantages because it is the simplest form of a motor starter. A DOL starter consists of a MCCB or circuit breaker, contactor, and an overload relay that is used for protection.
What are the different types of starter?
DOL, Star Delta, Soft starter, VFD
How do you on off dol starter with mobile?
with the help of senser
Direct online starter circuit diagram?
There is a link below for the DOL starter circuit.
Explain the function of direct online starter?
function of dol stater
What is meant by DOL direct on line?
DOL or Direct On Line is used when referring to induction motor starters. The simplest and most common type of motor starter is the Direct On Line. Some examples where a DOL starter would be used can include water pumps, compressors, conveyor belts and fans. A DOL starter can only be used if the sudden inrush of the motor starting does not cause voltage to drop excessively in the supply circuit.
What is the advantage of DOL starter?
for smooth operation and also to reduse starting current
What are different types of starters?
DOL, Star Delta, Soft starter, VFD
Is DOL starter is sufficient for 10HP 2880 RPM motor?
If the application is high starting torque, then go for star delta or soft starters. If not DOL will do.
What is the difference between dol and hdol?
Direct on line starter and Heavy direct on line starter...... in HDOL CT is fixed.
