Ventilation grid for door or wall of transformer sub-station allows entry of air and prevents rod or bar being inserted and comprises series of first profile devices

摘要

#CMT# #/CMT# The ventilation grid is for the door or wall of a transformer sub-station and allows air entry and prevents a rod or bar being inserted. It comprises a series of first profile devices (10) fixed above each other, whereby each first profile device has two vertically orientated flanges (11-12) connected to each other by horizontally or inclined orientated connecting bodies (13). #CMT#USE : #/CMT# As a ventilation grid for the door or wall of a transformer sub-station, allowing air entry and preventing rod or bar being inserted. #CMT#ADVANTAGE : #/CMT# The grid has a simple construction and is completely protected against rod or bar incursion. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure shows a first version of the invention. 10 : first profile devices 11-12 : vertically orientated flanges 13 : horizontally or inclined orientated connecting bodies.