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部标准《飞机电磁继电器、接触器专业技术条件》已经部批准,标准编号为HB5523-80。作为试行标准,于1981年1月1日起实施。本标准适用于飞机上直流电控制的开关式电磁继电器、接触器(以下简称产品)。这类产品可以作为独立的元件直接安装在飞机上,远距离地接通,断开或转换机上用电设备。现将几个重点问题说明如下:一、密封性本标准规定了两种气密性试验方法:气泡法(其中的油浸加热法)和示踪气体法。实际上,气泡法分油浸加热法和液浸抽气法两种,且极限灵敏度基本相同,均能检验泄漏率为10~(-4)~10~(-5)大气压·厘米~3/秒的空洞。但油浸加
Ministry of standards “aircraft electromagnetic relay, contactor professional and technical conditions” has been partially approved, the standard number is HB5523-80. As a pilot standard, implemented on January 1, 1981. This standard applies to the switch on the plane DC electromagnetic relay, contactor (hereinafter referred to as the product). These products can be installed directly on the aircraft as stand-alone components, remotely turning on, disconnecting or switching onboard electrical equipment. Now several key issues are described below: First, the tightness This standard specifies two kinds of gas tightness test methods: bubble method (which oil immersion heating method) and tracer gas method. In fact, bubble method is divided into oil immersion heating method and liquid immersion gas extraction method, and the ultimate sensitivity is basically the same, both of which can check the leak rate of 10 -4 to 10 -5 atmospheric pressure · cm -3 / Second hole. But oil dip plus