Design of Contact Performance Testing Setup for Relay Contact

摘要

Contacts are the key components of electrical apparatus, responsible for the task of switching on and breaking currents, so their performance affects the reliability and operation duration of electrical apparatus directly. Arc is the most important factor that influences erosion and service life duration of contacts. From enhancement the reliability of electrical apparatus point of view, it's meaningful to study arc and the phenomena of contacts under arc effect. Equipment for measurement of electrical contact performance was developed in this paper. Based on industrial computer and high rate data acquisition card, the equipment introduced in this paper can test two sets of contacts simultaneous. So that it is convenient to study comparatively of various kinds of contacts. It has a wide setting range in mechanical and electrical parameters, and also has a high measurement precision.