以往,在电力系统变电所的高压电气设备上,检查接点发热是用粘附示温蜡片,或者在高峰负荷时用绝缘杆绑上蜡烛头等方法进行触试。这些方法不但耗费工时,而且数据很不准,因而不能及时准确地发现设备缺陷。我们试制成功的带电测量用“半导体点温计”。为带电测量变电所高压载流接点的温度提供了一种简便易制,轻巧准确的新仪器。从一年多来的现场实际使用情况看,收到了较好的效果。现介绍如下,供有关部门参考。工作原理带电测量用半导体点温计中,最主要的是采用了微型半导体热敏电阻元件。这个元件对温度的变化非常敏感,即它的电阻值十分明显地随着温度的变化而变化,其特性如图1所示。从图1特性曲线中可以看出这种半导体热 In the past, high-voltage electrical equipment in the power system substation, check the contact heat is stick with the temperature of the wax film, or in the peak load insulated rod tied candle head and other methods to touch test. These methods are not only labor-intensive, and the data is not accurate, and therefore can not be timely and accurate detection of equipment defects. Our trial of successful production of the “semiconductor thermometer.” It provides a simple and easy-to-use, light and accurate new instrument for measuring the temperature of the high-voltage carrying point in the substation. From more than a year on the spot the actual use of the situation, received a good result. Now introduced as follows, for the relevant departments for reference. Working principle Live measurement with a semiconductor thermometer, the most important is the use of micro-semiconductor thermistor components. This component is very sensitive to changes in temperature, that is, its resistance varies significantly with temperature, and its characteristics are shown in Figure 1. This semiconductor heat can be seen from the characteristic curve in Figure 1