SU524268A1 - Valve bit - Google Patents

Description

(54) VENTRY DISCHARGE

one

I The invention relates to electrically high-voltage apparatus designed to protect electrical installations from overvoltages.

: Valve gaps are known that contain a circuit of series-connected blocks of spark gaps, shunted by resistors, alternating with blocks of operating resistors, equipped with high-voltage and grounded leads, and shunt capacitance in the form of two parallel branches.

However, such dischargers are not reliable enough

The purpose of the invention is to increase reliability by ensuring uniform distribution. dividing voltage This is achieved by the fact that i the capacities of the proposed valve time (the terminals are connected in such a way that t is the extreme capacity adjacent to the high output of the arrester, one of the parallel branches and the extreme capacitance attached to the grounded output of the arrester, the other of the parallel branches is shunted , a block of spark gaps each, and each of the remaining tanks; it shunts a series-connected block: spark gaps and a block of operating resistors.

The drawing shows an electrical diagram of the proposed array,

Blocks of spark gaps 1 are connected in series with blocks of operating resistors 2.

Shunt resistors 3 are located on the blocks of spark gaps. Shunt capacitors 4 are located on either side of the blocks of spark plugs to G working resistors ..

When the working voltage of the mains is applied to the discharge, the latter is distributed into blocks of spark gaps 1 with the help of shunt resistors 3 and capacitors 4. Due to the symmetry of the left and right capacitor branches, the capacitive current, P (X) flowing through them, equal to each other, which ensures uniform distribution of voltage across the blocks of spark gaps 1, Prc the appearance of a pulsed overvoltage wave of a sufficiently large magnitude becomes irregular in the spark gaps. After the breakdown of spark gaps, the pulse is not the voltage that acts on the discharge d-. The nickname is distributed over the working resistor units in accordance with the active current flowing through the operating resistors. Due to the symmetry of both capacitor circuits, their capacitive currents are equal to each other. Therefore, even in this mode, the distribution of the voltage applied to the discharge along the supporting structure of the working elements of the discharge unit, the uniform distribution of the voltage across the insulation structure to everything, is ensured; The modes of operation of the discharge unit are minimal in this design, and the height and mass of the discharge capacitor are accordingly reduced.

Claims (1)

4 Claims of invention So that, with the whole increase in reliability by ensuring equal ramification of the voltage, the capacitances are connected in such a way that the Extreme capacitance, 1 adjacent to the high-voltage output of the discharge, is one of the parallel branches to it and: extreme capacity, adjacent to the grounded-; Another output of the discharge gap is shunted by a separate block of spark gaps each, and each of the remaining tanks shunts a series of spark gaps and a block of operating resistors in series.