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松川电器为您讲解在选择中间继电器,小型继电器的时候,有那些问题应该注意以下几点?

2013/12/2 9:41:07点击:

在选择中间继电器的时候,有那些问题应该注意以下几点:

一,所使用的地理位置、气候作用等问题:
在这里主要提到海拔高度、环境温度、环境湿度、和电磁干扰等。考虑控制系统的普遍适用性,还要考虑必须长年累月的可靠运行等特殊性,装置关键部位必须选用具有高绝缘、强抗电性能的全密封型的中间继电器产品。因为只有全密封继电器才具有优良的长期耐受恶劣环境性能、良好的电接触稳定、可靠性和切换负载能力。

二,产品的机械作用
该部份主要指振动、冲击、碰撞等应力作用要素。对控制系统主要考虑到抗地震应力作用、抗机械应力作用能力,宜选用采用平衡衔铁机构的小型中间继电器

三,激励线圈输入参量
主要是指过激励、欠激励、低压激励与高压(220 V)输出隔离、温度变化影响、远距离有线激励、电磁干扰激励等参量要素,这些都是确保电力系统自动化装置可靠运行必须认真考虑的因素。按小型中间继电器所规定的激励量激励是确保它可靠、稳定工作的必要条件。