Method for endowing low-voltage arrester with automatic separation function
An automatic detachment and lightning arrester technology, applied in the field of lightning arresters, can solve the problems of inability to penetrate the air gap, low operating voltage of the lightning arrester, heat transfer to the disconnector, etc., so as to avoid electrified "arcing", prevent further expansion, and accelerate rapid disconnection open effect
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[0046] The present invention will be further described below in conjunction with the drawings.
[0047] In order to facilitate the understanding of this technical solution, several technical problems that are likely to cause confusion are explained as follows:
[0048] 1. Low-voltage arresters are mainly used to prevent insulation damage caused by lightning. Therefore, in the national standard, there are no operation and steep wave impulse current residual voltage indicators for low-voltage arresters.
[0049] 2. Due to the excellent non-linearity of zinc oxide resistors, it can quickly discharge current and reduce the amplitude of lightning voltage under the nominal lightning impulse current, so there will be no power frequency short-circuit current.
[0050] 3. For the low-voltage arrester, the short-circuit current is caused by the deterioration of the resistor chip (also known as the valve chip) and the increase in leakage current causes the resistor chip to heat up, and the resist...
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