Direct Online Circuit Diagram Pdf

The drawing of a dol starter is generally done in two separate stages.

Direct online circuit diagram pdf. 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. All other control and power connections have to be made by the installer. Typical circuit diagram of direct on line starter a main circuit b control circuit for momentary contact control c control circuit for maintained contact control typical circuit diagram of forward reverse starter electrical interlocking main circuit l1 l s0 s1 k1 k1 n l nsk 6970c f3 53 54 a1 a2 21 22 a1 22 k2 53 s2 s2 s1 f2 96 95 k2 k1. 1 the following links are pre fitted to the starter.

Dol starter control diagram three phase. The wiring of direct on line control circuit starter is following. The dol starter comprises of an mccb or circuit breaker contactor and an overload relay for protection. Download the latest version of circuit diagram a free open source program for making electronic circuit diagrams.

The connection of contactor can be done among relay coil supply voltage as well as thermal overload. The wiring diagram for a dol stater is shown below. This is why such a starter is used with induction motors rated below 5 hp. Wiring of the direct on line dol motor starter 1 three phase supply 230volt coil see wiring diagram.

The direct on line motor starter dol consist a mccb or circuit breaker contactor and an overload relay for protection. A2 14 18. Direct on line starter a dol starter connects the three main lines l1 l2 and l3 directly to the motor terminals when the start button is pressed. 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.

A direct online starter consits of two buttons a green button for starting and a red for stopping purpose of the motor. Electromagnetic contactor which can be opened by the thermal overload relay under fault conditions. Eaton wiring manual 06 11 8 1 88 all about motors page motor protection 8 3 notes on engineering 8 15 circuit documents 8 19 power supply 8 21 control circuit supply 8 24 contactor markings 8 25 direct on line start of three phase motors 8 26 control circuit devices for direct on line start 8 34 star delta switching of three phase motors 8 35. 13 17 with a flying lead to be connected to overload terminal 95.