Published On: Sun, Jan 5th, 2020

Principal single-line schemes of motor starter combinations

Author: Radoje Jankovic

All schemes are adopted from a catalog.

A. Motor-starter combinations of type „1“ & type „2“ coordination

  1. Motor-starter for single direction of rotation

This motor starter consist of a circuit breaker or motor-protective circuit breaker and contactor.

2. Motor-starter  combination

This DOL motor-starter consist of the following elements: circuit breaker or motor-protective circuit breaker without overload release, contactor and overload relay. 

3. Motor-starter combination without manual reset

This motor-starter consist of the following elements: circuit breaker or motor-protective circuit breaker with an overload relay function and contactor.

4. Compact motor starter

This motor starter consist of a motor-protective circuit breaker with a plug in trip magnetic and overload device.

5. Compact motor-starter for reversing of motor

This  reversing motor starter combination consist of the motor-protective circuit breaker and two contactors for operation of motor in both directions.

6. Single direction motor starter

 This motor starter consist of circuit-breaker or motor-protective circuit breaker and contactor.

7. Motor starter for single direction of motor rotation

This motor starter consist one circuit breaker or motor-protective circuit breaker without overload tripping device, and contactor and overload relay.

8. Motor starter combination without manual reset

This motor starter consist of a motor-protective circuit breaker which is complemented by a trip block having an overload function, and high-capacity contact module.

9. One of high-capacity compact motor starter

This motor starter consist a motor-protective circuit breaker fitted with a high-capacity module.

10. Reversing motor starter

This reversing motor starter consist of a motor-protective circuit breaker and two contactors for both direction of motor rotation.

11. A high-capacity compact motor starter

This motor starter consists of a motor-protective circuit breaker fitted with high-capacity contact module.

12. Compact motor starter without manual reset

This motor starter combination consist of a motor-protective circuit breaker, which supplemented by a trip block having an overload function, and is fitted with a high-capacity contact module.

13. Modular high-power reverse motor starter

This reversing motor starter consist of a motor-protective circuit breaker, which is supplemented by a trip block, and two mechanically interlocked high-power contact modules.

B. Fuseless motor-starter combinations of type „1“ & type „2“ coordination

B.1.

B.2.

  1. Direct-On-Line starter (DOL) or Direct-In-Line (DIL) starter

This  compact starter consist a motor protective circuit breaker fitted with a contact module, profile matching.

2. Direct-On-Line starter (DOL) or Direct-In-Line (DIL) starter

This direct-on-line starter as a complete unit consist a motor protective circuit breaker and DIL contactor.

3. Direct-On-Line starter (DOL) or Direct-In-Line (DIL) starter with and without manual reset

This motor-starter combinatio consist of the following modules: motor-protective circuit breaker without overload funciton, contactor and overload relay.

The motor starter can be operated with and without manula reset. In the manual position, the combination is protected against automatic restart. Reseting must be done at the machine.

In the automatic position, the motor starter restarts automatically once the bimetals have cooled down. 

4. Direct-On-Line starter (DOL) or Direct-In-Line (DIL) starter with and without manual reset

This motor-starter combination consist of the following components: motor-protective circuit breaker and contactor.

Both combinations can be operated with manual or automatic reset. In the manual position, the combination is protected against automatic restart. Reseting must bie done at the machine.

In the automatic position, the motor-starter restarts automatically once the bimetal have cooled down. 

5. Reversing Direct-On-Line starter (DOL) or Direct-In-Line (DIL) starter wiht or without mechanical interlocking

The reversing motor starter combination consists of  motor-protective circuit breaker and two contactors which may be or not mechanically interlocked. 

6. Star-delta  motor starter

Star-delta motor starter consist the following components: motor-protective circuit breaker, three direct-in-line (DIL)contactors; mains, delta and star and timing relay. 

 

7. Typical compact DOL motor starter

This direct on line motor starter consist of a motor-protective circuit breaker .

8. Compact high-power motor starter

9.  Complete DOL motor-starter single line diagram

10. Direct-on-line motor-starter with and without manual reset

This motor starter consist a motor-protective circuit breaker without overload function, contactor and overload relay.

The motor-starter can be operated with and without manual reset. In the manual position the combination is protected against automatic restart. Resetting must be done at the machine, in the automatic position the motor starter is ready for operation again once the bimetals have cooled down.

11. Direct-on-line motor starter with and without manual reset

This motor-starter consist of the following components: motor-protective circuit breaker and high-capacity contactor.

The motor-starter can be operated with and without manual reset. In the manual position the starter is protected against automatic restart. Resetting must be done at the machine. In the automatic position the starter is ready for operation again once the bimetals have cooled down.     

12. Single line diagram of reversing motor-starter with or without mechanical interlock

This reversing motor-starter consist a motor-protective circuit breaker and two electromagnetic contactors.

13. Single line diagram of reversing motor-starter with auxiliary contacts in contactors

This reversing starter consist of a motor-protection circuit breaker completed by trip block, and two mechanically interlocked high-capacity contactors.

14. Single-line diagram of motor-starter with high-capacity starter system, with and without manual reset

About the Author

-

Leave a comment

XHTML: You can use these html tags: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

Principal single-line schemes of motor starter combinations