| 摘要 |
Electrical module for protection against lightning and industrial overvoltages. Protection module characterised in that it is composed, between each phase P and earth T, of a basic arrangement 1, 2 comprising, shunted, a discharger and a first varistor, the arrangement is supplemented, in order to constitute a TT cell, with a choke L taken to earth through a second varistor. This invention is of interest to the manufacturers of lighting arrestors and electrical protection hardware. <IMAGE>
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