ISOLATION AND EXHAUST SYSTEM FOR AN ELECTRICAL ENCLOSURE

• Main Authors: STYCZEN SLAWOMIR, LEWANDOWSKI MACIEJ, KOKULA PAWEL, WIERTEK ARTUR, JASTRZEBSKI DANIEL, BELLOWS TROY M, BADURA PIOTR
• Format: Patent
• Language: Chinese; English
• Published: 21.05.2019
• Subjects: BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLYOR DISTRIBUTION OF ELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

An electrical enclosure, such as a Motor Control Centers (MCC), can include a ventilation system providing airflow while protecting from both ingress of solid objects as small as 1.0 millimeter and egress of gasses from an arc flash by providing a protective mesh with holes having a dimension of less than 1 millimeter, a bracket coupled to the mesh for providing a rigid support, and a flap configured to seal against the bracket and block the mesh in response to a pressure wave produced by an arc flash. The flap, normally open for airflow, can close in response to the pressure wave, by bendingat a perforation line to move the flap toward the mesh. The electrical enclosure can also include a normally closed exhaust system. The exhaust system can be configured to open in response to the pressure wave to allow the gasses to escape. 本公开内容涉及用于电气外壳的隔离和排气系统。电气外壳诸如马达控制中心(MCC)可以包括如下通风系统，该通风系统通过提供以下部件来提供气流同时防止小如1.0毫米的固体物体的进入和来自电弧闪光的气体的流出：具有尺寸小于1毫米的孔的保护网；支架，其耦接至网，用于提供刚性支承；以及翼片，其被配置成响应于由电弧闪光产生的压力波而密封抵靠支架并阻挡网。通常对气流打开的翼片可以响