Electrified signal that detects of transformer winding deformation pours into into and protection circuit

The utility model discloses a new electrified signal that detects of transformer winding deformation pours into into and protection circuit, following fig. 1 is shown. This circuit includes condenser C2 (the C1 in fig. 1 is coupling capacitor, and sinusoidal sweep signal passes through coupling capacitor and pours into the transformer neutral bushing into), gas discharge tube SP, inductance L1, inductance L2 and piezo -resistor R. Piezo -resistor R and gas discharge tube SP are parallelly connected, and common port between them is connected to sweep singla generator (the us in fig. 1), and the other end is ground connection all, the common port that sweep singla generator us and gas discharge tube SP are connected, other end ground connection are connected to inductance L1's one end, after inductance L2 established ties with electric capacity C2, sweep singla generator, other end ground connection were connected to one end. The utility model discloses compare from the bushing tap injection mode with signal am