电压升高对继电器接通和分断时间的影响  

Effect of Power Supply Voltage on the Make & Break Duration of Relays

作　　者：李震彪[1] 张欢[1] 梁盼望[1] 

机构地区：[1]华中科技大学电气与电子工程学院,武汉430074

出　　处：《电工材料》2008年第4期28-32,共5页Electrical Engineering Materials

基　　金：国家自然科学基金资助项目(50477044)

摘　　要：对两种汽车继电器样品进行了不同电压同种电流等级下闭合分断操作,并记录触头通断过程的电流电压波形。针对触头通断过程中出现的弹跳现象,分别定义了几种时间参数,统计分析了它们随电压升高后的变化规律。结果表明:电压升高对继电器闭合时间的影响不明显,但会导致继电器分断时间的明显增大;闭合弹跳对接通时间影响很大,分断弹跳一般只发生在触头分离初期的微间隙,对分断时间影响很小。The electrical contact experiments with two different commercial relays were conducted, namely, a large number of make ＆ break operations under different voltage and current levels for both test samples were carried out respectively, and the arcing current/voltage waveforms in contact making ＆ breaking operation were recorded. To better understand the bounce phenomenon in both making and breaking process, several time parameters during the contact＇ s making and breaking interval are defined, respectively, and their dependence on supply voltage was statistically analyzed. The experimental result shows： the increase of power supply voltage will result in the corresponding increase of break duration of the relay, but little effect on make duration. Bounce time in making operation has great influence on make duration, bounce in breaking operation mainly occurs at the initial stage of contact separation and the gap there and then is very short, so breaking bounce has little effect on the break duration.

关 键 词：继电器 分断时间 闭合时间 弹跳时间 电压 

分 类 号：TM206[一般工业技术—材料科学与工程]