Patent ID: 7158369
Filing Date: 2007-01-02
Classification: H01H,H02B

Abstract:
1. Single phase or polyphase switchgear comprising one or more switches which are mounted with the aid of solid insulation such that they are insulated, as well as associated live components such as rail systems, connectors and the like, wherein both the switches and the associated live components are housed in a housing enveloping said switches and live components, characterised in that the enveloping housing is filled with air having a low moisture content and the interior space thereof is sealed with respect to the exterior space around the enveloping housing in such a way that the air present in the housing is not contaminated and will not reach the dew point, characterised in that a moisture-absorbent agent is arranged in the enveloping housing, the quantity of said moistureabsorbent agent being such that the moisture that penetrates as a result of leakage of the enveloping housing is absorbed during the life of the switchgear, and characterised in that the amount of absorbent is determined by the equation D=(L×V×Y+I×J)×100/O+S×F×100/O where D is the amount of desiccant required in grams assuming a specific amount of leakage L per day in m