SU725143A1 - Arrangement for protecting wire communication lines from pulse overvoltages - Google Patents

Description

contains a discharge 1 with a grounded Midpoint, which is connected at the input between the alphabets or voltages d, in 1P1p01VO of a single circuit. By the voltage of the distributor M / a and each () circuits | VKL1Ochen1NYi D01sseli 2 and 5. To D | p | ugi; mvivodom throttles 2 and 5 pad1 included an additional chain of protection that includes a series (cut out from the capacitor 4 and inductance coils 5, parallel to which interconnection 6 and a resistor 7 are connected. Resistors 8 and 5 are included in each wire (core) of the circuit, at the output of device 11va between П | рО | Вдам (and (conductors) to the resistor М 8 and 9 are connected counter-opornye dnoay.

In dannuy11111roys11ve implemented a step-by-step principle of protection.

If the input Stroy1st1va enters}: airway relative to the ground, the magnitude of which is higher than the ignition voltage of the doubled one, the first discharge days1K / is triggered, then the voltage partially decreases And | Ndu1CT1I1VNO1St 1MI. At relatively low voltages, at the input of the circuit due to the resonance of the harmonic voltages, n; the g-component e / 50 Hz on the series 1 M oscillating circuit (4.5) triggers the second bit 6. At the same time, the useful informa- tion transmitted the constant TOIKOIM, the beyrp tst1venio passes to the input of the computer modules.

In addition, overvoltage and reference diodes 10 and / / are protected. For the purpose of additional protection over the current of the reference diodes, the following are included: disconnectors 8 and 9. They have an overvoltage pulse, arising during switching on overhead lines, a smart first and second station, zhenyi shchity, at the input of the modules

is reduced to safe helper support diode 1M1I.

The use of this device in the protection and transmission chains) for the ACS for energy and also in two-way water circuits will prevent the installation of expensive electrical cables, pipes etc.

F o r M ly l invented and

Device for protection of line signals |: TH connection from I1mtuls1nogo overvoltages, containing a gadget connected between the wires at the input of the protected two-wire line of communication, which has a choke connected to each wire in each wire ,

characterized by the fact that, in order to increase reliability, speed and sensitivity, the V1Stroy1ST1vo is equipped with dVum resistors, connected in series with the mentioned Drossel in each wire, and the resonant .ce1ch1c from the consequently connected capacitor n inductance connected between the wires and connected to the dr. m. terminals of the shots: small throttles, while parallel to the inductance of the resonant circuit, another gadget and a resistor are connected.

The history of NI Ki information, the mation taken into account during the examination:

1.Avtorokyue 10vkdedelBST1vo USSR 516147, class. H 02 H 9/00, 1976.

2. Protection of low-voltage control circuits. “Dashsh Keysan, 1977, Vol. 45, No. 3, p. 39-44.

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Claims (1)

A device for protecting wire communication lines from surge surges, comprising a surge arrester connected between wires at the input of a protected two-wire communication line, an inductor connected to each electrode in each wire, and counter-supporting diodes connected to the output of the two-wire communication line, characterized in that, in order to increase reliability, speed and sensitivity, the device is equipped with two resistors connected in series with the mentioned chokes in each wire, and a resonant chain of series about the connected capacitor and inductance connected between the wires and connected to the other. outputs of the mentioned chokes, while another. discharger and resistor are connected in parallel with the inductance of the resonant circuit.