SU767855A1 - Device for controlling magnetic starter - Google Patents

Description

one

The invention relates to the field of power supply systems for electrical circuits and the redistribution of electrical energy and may find application in electric drives.

A device for controlling an electromagnetic actuator is known, comprising a button connected in series with the windings of the actuators configured with auxiliary contacts l.

A disadvantage of this device is insufficient over frequency.

The closest to the invention in terms of technical means and the result achieved is a device for controlling an electromagnetic actuator, containing a button connected in series with the intermediate relay coil, and a turn-off time delayed shutdown, the closure contact of which bypasses the disconnecting part of the relay contact blocking contact the actuator shunts the closing part of the relay contact, and the tripping block contact is included in the winding circuit of the Repeat relay.

The disadvantage of this device is the lack of functional capabilities due to the impossibility of reversing control of the drive.

The purpose of the invention is to expand the functionality.

This goal is achieved by the fact that the device is equipped with an additional starter and a time relay, the main starter is made in an additional closing block-clock cycle included in the winding circuit of the additional time relay; and an additional actuator, the winding of which is connected in series with the opening contact of the main actuator, in the circuit of the winding of which is connected open blocking contact additional starter.

The drawing shows a diagram of the device.

25 / when the supply voltage is applied through the disconnecting part of contact 1 and through the disconnecting block-contact 2 of the main actuator 3, the coil 4 of the first time relay is energized with a shut-off time, triggers and prepares the circuit for switching on the actuator 3.

When button 5 is pressed, intermediate relay B and its main and auxiliary contacts 1 and 7 are switched, the winding circuit of the first pin 3, which is turned on, closes contact blocks 8 and 9, and the contact switch 2 is disconnected, and the winding circuit of the second actuator 10 closes before the main switch turns off starter and winding 4 main time relay.

If button 5 does not return to its original state after the time delay has elapsed, relay 4 is turned off and winding 3 de-energizes.

In order to re-conclude the main actuator, it is necessary for button 5 to return to its original state. If after pressing the button 5 is released, the relay 6 is turned off, its contacts 1 and 7 will return to the initial state before the contact 11 of the relay 4 time 4 is opened and the power supply circuit of the winding 3 of the main actuator and the winding 12 of the additional time relay is formed with a delay at shutdown, which It triggers closing contact 13 and preparing a circuit for switching on an additional start-up. Body 10 having auxiliary contacts 14 and 15.:. .

Thus, the switching of the main and additional starters is carried out by pressing the knob and releasing the button 5.

To disable the starters you need. hold button 5 down until the timer expires.

Claims (2)

1. Chilikin MG General course of the electric drive. ML, 1965, p. 419. 2. Authors certificate of the USSR 518819, cl. H 01 H 47/02, 1973. T