接线端子弯曲及拉出试验装置的设计及不确定度评定

Design and Uncertainty Analysis of Test Device for Bending and Pulling Out of Terminal

通过分析国家标准的具体试验要求,提出测试装置设计原理及技术指标,研制了一种新的断路器接线端子弯曲及拉出试验的测试装置,拉力值和试验时间可设定,实现拉力逐渐增大到规定值,并自动保持恒定输出,更加符合标准所规定拉力不能突加的要求。以剩余电流断路器为试验样品,按试验流程实测接线端子的弯曲及拉出试验,验证了新型测试装置的功能及可靠性。最后对该测试装置的测量结果不确定因素进行溯源,取拉力量值为代表开展测量结果不确定度评定与分析。

This paper analyzed the requirements of the national standard,developed a new test device for circuit breaker terminal bending and pullout test,tensile force value and the test time can be set to achieve the tension increased to a specified value,and automatically maintain a constant output,being more in line with the standards of pull not sudden requirements. The function and reliability of the new test device were verified by the test of bending and pulling out of the circuit breaker. Finally,the uncertainty of the measurement results of the test device was analyzed,and the uncertainty of the measurement result was evaluated by the pull force value.