SU1702479A1 - Converter set switching device with protective gear - Google Patents

Abstract

The invention relates to electrical engineering, in particular, to control devices for converter units comprising a converter transformer and a semiconductor converter. The purpose of the invention is to expand the functionality of the device. The goal is achieved in that the device contains a circuit breaker 1 with a contact system 2, through which the converter transformer 3 is connected to the power supply network, an electromagnetic drive 5 having control terminals b and 7. And also pins 8 and 9 for connecting the power supply, magnetic starter 10 with switching-on katui / of, M, with the closing block-contact 12 and with the contact system 13, through which it connects to each of the contacts of the contact system 2 in parallel one of the resistors 14-16. Electromagnetic actuator 5 contains two electromagnet connected in parallel, as well as a diode connected in series with them and limit switches with respectively opening and closing contacts. 2 il SP C

Description

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Claims (1)

Claim A device for switching converter assemblies with protection, comprising a switching device with main closing contacts for connecting the converter transformer to the corresponding phases of the supply network, with a closing block contact and with an electromagnetic drive made with two leads for connecting power and with two control leads, first a magnetic starter with a closing block contact and a contact system, through the closing contacts of which to each main contact of the switching device one resistor is connected in parallel, a second magnetic starter with two make and one disconnect block contacts and with a contact system having terminals for connecting the control unit and protecting the converter unit to the corresponding phases of the mains, Start and Stop control buttons connected in series with the switching coil the second magnetic starter, the free output of which has a terminal for connecting to the mains, the first closing contact block of the specified starter is connected in parallel with the first contact of the Start button, characterized in that, in order to expand functionality, reduce overall dimensions and cost, the first magnetic starter coil has a terminal for connecting to the mains, its free output through parallel connected input of the second start button and the closing block the contact of the switching device is connected to the free terminal of the Start button, the closing block contact of the first and second closing block contact of the second magnetic starter are connected in series and this ep is connected to the control terminals of the solenoid actuator of the switching device, and first control and the first connection to the mains terminals of said actuator are interconnected via normally closed auxiliary contact of the second magnetic switch and connected to the free terminal Start button. Compiled by C. Shilak Editor I. Casarda Tehred M. Morgenthal Corrector L. Patai Order 4549 Circulation Subscription VNIIIPI of the State Committee for Inventions and Discoveries under the State Committee for Science and Technology of the USSR '113035, Moscow, Zh-35, Raushskaya nab ,, 4/5 Production and Publishing Combine Patent, Uzhgorod, 101 Gagarin St.