| 摘要 |
<p>#CMT# #/CMT# The ventilator (3) has an annular fixed part (31) adapted to be attached around a pluggable connection arm (21) of an electrical disconnection apparatus. A movable part (32) creates airflow when the movable part is moved, and is coupled with the fixed part. An autonomous power supply system (33) has a transformer comprising a primary circuit supplied with current circulating in the arm and a secondary circuit generating, in response, a secondary induced current to be supplied to a driving motor of the movable part. The movable part is in the form of a wheel with ventilation blades. #CMT# : #/CMT# An independent claim is also included for a cut-set cabinet. #CMT#USE : #/CMT# Ventilator for an electrical disconnection apparatus such as three-phase medium-voltage circuit breaker, which is installed in a cut cabinet (all claimed) such as air insulated switchgear type cut cabinet. #CMT#ADVANTAGE : #/CMT# The ventilator is installed in a hottest zone of the circuit breaker so as to ensure optimal ventilation efficiency. The ventilator is easily accessible by an operator, and is simple to install and maintain. The ventilator is provided with the autonomous power supply system, so that the ventilator does not have wiring, thus maintaining dielectric behavior of the cabinet. The movable part is in the form of the wheel with ventilation blades, thus ensuring better compromise between the ventilation efficiency and the compactness of the ventilator. The autonomy and the modularity of the ventilator allow the addition of the ventilator on an arm of an existing circuit breaker or in housing of an existing cabinet, thus eliminating the need to modify the manufacturing line of the circuit breakers or the cabinets. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic partial longitudinal sectional view of an arm of a circuit breaker on which a ventilator is arranged. 3 : Ventilator 21 : Pluggable connection arm 31 : Annular fixed part 32 : Movable part 33 : Autonomous power supply system.</p> |
