SU32605A1 - Circuit Breaker Control Device - Google Patents

Description

The device according to the invention is intended to control an electrical switch connected to a control panel with two wires. In the device, besides the usual signaling of the position of the switch (. On and off), there is a special circuit to indicate the health of the control circuit.

The drawing shows a diagram of the device.

The high-voltage circuit breaker is controlled by the two buttons Ki and Kg, of which the first is the on button and the second is the off button.

The button K is connected to the DC source circuit in series with the contacts KB and KU and with the winding of the intermediate relay P / 7, which serves to close the circuit of the electric motor ED, mechanically connected with the actuator of the explosive circuit breaker. This drive is furthermore associated with a switch which closes depending on the position of the switch. either the above-mentioned contacts KYi, or contacts KU in the circuit of the breaking coil KB, the winding of which is connected in series with the second button AGO. The CB contacts are interlocking and serve to open the circuit of the intermediate RP relay during the action of the tripping coil.

The blocking is intended to eliminate the phenomenon of pumping, i.e. re-opening the switch when the process of switching on coincides with the action of protection or blocking on the switch-off circuit.

Signaling in the device is carried out by two lamps LK LZ-; red and green. Usually, the first lamp indicates that the switch is on, and the second one is off. These lamps are included through the additional resistances of the DS parallel to the buttons and l ;, so that they indicate not only the switch: the switch is switched off, but also at the same time the absence of damage (for example, breakage) in that part of the circuit that should work during the next operation. For example, if the BB switch is on, then the LI lamp is red. turns out to be included in the current source circuit in series with the contacts of the control unit and the winding / CS, and therefore, its maintenance to the maintenance personnel is not only the switch position, but also on the serviceability of the switching off carriage circuit. Likewise, when the switch is turned off, the lamp will turn green, and, because it is turned on through the LU contacts, the winding of the PH relay and the CB contact, its burning will indicate to the personnel that the RP relay circuit is working

It is quite obvious that the current that passes through the mentioned circuits of the RP relay and the KB winding must be so small that neither the RP relay nor the switching off coil can be activated.

Incremental resistors are included for device reinsurance in case of a short circuit in the cartridge or lamp. In the absence of additional resistances in this case, the on or off switch would follow.

The proposed device can be applied to oil, expansion, gas and deionic switches, as well as to automatic machines with electric drives.

The motor for turning on the switch can be an electromagnet (solenoid drive), a motor (motor

actuator) or pneumatic and hydraulic motors (pneumatic and hydraulic actuators) with valve control from electromagnets. Either direct or single phase alternating current can be used for control. In parallel with the shutdown button, the contacts of the protection relay, interlocks or so-called remote buttons can work.

The subject matter of the invention.

A device for operating a two-wire switch between a switch control panel, characterized by the use of a special circuit besides the usual positioning of the switch („on and off”) of a special circuit to indicate the health of the control circuit, which should work during the subsequent operation.

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