今天我们给大家讲一下UL1977标准要求的研读第五部分，主要是带电体可接触性的相关要求。

带电体的可触及性
A connector of Types 1A, 2, 3, or 4 intended for usage external to the end equipment shall have live parts protected against exposure to contact by persons when assembled, installed and mated as intended, as determined by the use of the probe shown in Figure 10.1.
Types 1A, 2, 3, 或4用于设备外部的连接器，安装后带电体不能被probe碰到
 
Mating devices of Types 1A, 2, 3, or 4 intended for usage external to the end equipment shall not have exposed live contacts during engagement or withdrawal as determined by the use of the probe shown in Figure 10.1.
和Types 1A, 2, 3, 或4用于设备外部连接器配套的装置，在插入或拔出时带电体不能被probe碰到
 
Probe 信息见如下（FIG 10.1）

• 配合装置之间的连接
• A hybrid device shall be polarized or otherwise constructed so that contacts with different Type designations cannot make electrical contact when mating devices are connected together.
• Hybrid的连接器(包括两个或两个以上的Type)，要有防止不同Type之间误插

以上就是我们今天讲解的UL1977的相关要求的主要内容了，如果您有任何疑问，欢迎随时咨询德立弗检测，德立弗检测是UL1977的免目击实验室，拥有全套的测试能力和丰富的认证经验，欢迎您的咨询！