用于指导在稳态条件下估计载流电气设备部件的温度和温升允许值。 本报告旨在提供: -关于电触点结构及其欧姆电阻计算的一般数据； -接触的基本老化机制； -触点和连接端子的温升计算； -各种部件的最大“允许”温度和温升，特别是触点、连接端子和与其连接的导体； -产品委员会规定允许温度和温升时应遵循的一般程序。

Is intended for guidance in estimating the permissible values for temperature and temperature rise of component parts of electrical equipment carrying current under steady state conditions. The present report is intended to supply: - general data on the structure of electric contacts and the calculation of their ohmic resistance; - the basic ageing mechanisms of contacts; - the calculation of the temperature rise of contacts and connection terminals; - the maximum "permissible" temperature and temperature rise for various components, in particular the contacts, the connection terminals and the conductors connected to them; - the general procedure to be followed by product committees for specifying the permissible temperature and temperature rise.