PERFECCIONAMIENTOS EN APARATOS ELECTRICOS DE AIRE COMPRIMI-DO DE CIRCUITO ESENCIALMENTE CERRADO.

摘要

Double pressure compressed air electric apparatus such as an air-blast circuit interrupter having a high-pressure tank and a low-pressure (exhaust) tank whereby the low-pressure is greater than the atmospheric pressure under normal operating conditions. A compressor taking air from the low-pressure tank supplies high-pressure air to the high-pressure tank. A three-way valve cooperating with an air-drying device causes said compressor to take air from the atmosphere in case the low-pressure drops to a dangerous value under the influence of a leakage in the system. The additional quantity of air taken from the atmosphere is dried by the air-drying device.