SU1241368A1 - Device for automatic energizing of starter equipment - Google Patents

Abstract

The invention relates to electrical engineering, in particular, to emergency automation devices, and can be used as an automatic reclosing device (ARC) of starting equipment in the event of a short-term disappearance or deep voltage drop. In addition, the nrrri connection of an intermediate relay of 9 circuits in parallel, the number of which is determined by the number of groups of starting equipment, consisting of series-connected time of the master capacitor 10 (15), which is parallel through the opening contact 11

Description

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The invention relates to electrical engineering, in particular, to emergency control automation devices, and can be used as an automatic reclosing device (ARC) of starting equipment, for example. starters, contactors, relays, etc. technological equipment, with a short-term disappearance or deep landing of voltage, which leads to stopping the technological process, reducing output.

The aim of the invention is to enhance the functionality by ensuring the sequential re-activation of several groups of starting equipment.

The drawing shows an electrical schematic diagram of the device switching on the starting equipment /

. The device for automatic restarting of the starting equipment contains a coil of a magnetic actuator or other starting equipment connected in series with the opening contact 2 of the Stop button and the closing contact of the 3 Start buttons connected to a source of alternating voltage of the network, a contact of the magnetic start button bypassing the Start button , a circuit connected to a source of alternating voltage of the network and consisting of series-connected rectifiers 5, a resistor 6 and a capacitor 7, in parallel to which is connected Zener diode 8 and intermediate relay 9, the first circuit from which are connected in series with the time of the driving capacitor 10, in parallel with which the resistor 12 is connected through the disconnecting contact 11 of the intermediate relay 9, and the executive relay 13, which is connected in parallel with the zener diode 8 via a rectifying diode 14, and a second circuit , also consisting of series-connected supply capacitor 15, in parallel with which, through the disconnecting contact 16 of intermediate relay 9, resistor 17 is connected, and executive relay 8, which is connected para-plelno dyer's weed chain through razmykayupts ni Pin in 19 point relay 13 zamykayu- ny th contact 20 of the relay 13 ispolnitelnoh, bypass the Start button, a contact group 21 actuating relay 13 connected parallel to the Start button of the first group starting appara8L

tours (and a group of contact-acts 22 of the operational relay 18, connected in parallel with the Start buttons of the second group of starting equipment.

The additional switching on of several circuits allows for the automatic reclosing of two or more groups of starting equipment of technological equipment in a predetermined sequence, which is an indispensable condition for switching on equipment, for example turning on the power supply of the blocks and connecting the load (the first group of starting equipment)

and the subsequent inclusion of the energy source of the load (the second group of starting equipment).

Automatic recloser starting app. ry works as follows.

In the presence of mains voltage, the device is in a static state in which capacitor 7 is charged, intermediate relay 9 is turned on,. the time setting capacitors 10 and 15 are charged, contacts 11, 16 of intermediate relay 9 are open. With the disappearance of the cpi, a deep fit of the mains voltage, the intermediate relay 9 releases and, with its contact 11, closes the discharge circuit, the recharge time of its capacitor 10, which is discharged along the + capacitor circuit 10-pin 11 of the intermediate relay 9 - resistor 1, 2 - - capacitor 10. Similarly

capacitor discharge 15 occurs.

When the mains voltage develops, intermediate relay 9 is triggered, the discharge circuit of capacitors 10s 15 is opened and the charge of capacitor 10 starts. The circuit voltage source - rectifier 5 - resistor 6 - rectifying diode 14 - capacitor 10 - executive relay 13 - source of voltage. At the beginning of the charge current

the capacitor 10 exceeds the tripping current of the executive relay 13, it works. Contact 19 of the executive relay 13 is opened and does not allow the time to set capacitor 5 to charge. Simultaneously contacts 2 5 and 20 of the executive relay 13 start the first group of starting equipment. After the time, determined by the value of the capacitor 10,

The charge current is reduced to the magnitude of the release current of the relay 13, and the latter releases, shorting the charge circuit of the time - master capacitor 15. Condens

3

The torus 15 is charged in a circuit with a voltage source - rectifier 5 - resistor 6 - rectifying diode 14 - contact 19 of executive relay 1. - capacitor 15 - executive relay 18 - voltage source. The executive relay 18 is activated for the time determined by the capacitance value of the capacitor 15 and by its contacts 22 includes the second group of starting equipment. The rectifying diode 14 serves to increase the reliability of the device and prevents the discharge time of the supply capacitors 10 and 15 to the intermediate relay 9. If it is necessary to turn on three groups of starting equipment to the plate + the time of the setting capacitor 15, the disconnecting contact of the executive relay 18 is connected a third circuit, also consisting of the time of the setting capacitor, the executive relay and the resistor, connected in parallel with the time of the setting capacitor via the contact of the intermediate relay 9.

Claims (1)

Invention Formula An automatic starting device comprising Editor I.Rybchenko  "" .. ". KiB.", 3607/50 order Compiled by G. Damsk Tehred O. Sopko Correction E. Sirohman Circulation 631 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 3684 starter coil included in series with the closing contact of the Start button and the opening contact of the Stop button, connected in series by a rectifier, resistor and capacitor, shunt by a zener diode and an intermediate relay, characterized in that, in order to expand the functionality by ensuring the sequential re-activation of several groups of starting equipment, parallel to the intermediate relay, circuits are connected, the number of which is determined by the number of groups of starting equipment consisting of series-connected time the setting capacitor, in parallel with which the resistor is connected via the disconnecting contact of the intermediate relay, the first circuit is connected to 1: the Zener diode through a rectifying diode, and the next to the Plus side, the time of the driving capacitor of the previous circuit is opened by the opening relay of the previous circuit, at the same time, the closing contacts of the executive relays shunt the Start buttons of the corresponding groups of starting equipment.