Direct Online Motor Connection Diagram

The dol starter comprises an mccb or circuit breaker contactor and an overload relay for protection.

Direct online motor connection diagram. The direct online or dol starter employs full voltage or across the line starting technique where the motor is directly connected to full voltage through mccb or circuit breaker and relays for overload protection. Direct on line starter direct on line starter method is a common method of starting of cage induction motor. 1 the following links are pre fitted to the starter.

To prevent damage to the windings due to the high starting current flow. The thermal overload is supplied as a separate item. The direct on line motor starter dol is designed to switch a single or three phase induction motor at rated voltage.

Dol starter control diagram three phase. In this article we will discuss dol starter direct online starter working principle and construction dol starter diagram control diagram power circuit and wiring single 3 phase starter direct on line is the simplest and cheapest method used for starting three phase motor. It consists a coil operated contactor c controlled by start and stop push button as shown in the connection diagram below.

The l1 contactor is connected from normally open no to r phase using mccb. Dol starter wiring diagram. A direct online starter consists of two buttons a green button for starting and a red for stopping purpose of the motor.

The motor is connected through a starter across the full supply voltage. 13 17 with a flying lead to be connected to overload terminal 95. Wiring diagram of dol starter.

This is why such a starter is used with induction motors rated below 5 hp. Direct online starter wiring diagram. The wiring diagram for a dol stater is shown below.