多功能低压电气合测试仪的研制和开发.pdf

Subject : Multi-functional low-voltage electrical research and development of comprehensive test instrument Specialty : Detection technology and automatic equipment Name :Li Li （Signature ） Instructor : Huang Xianghui （Signature ） ABSTRACT Low voltage electrical integrated tester is the instrument of testing safety features in the ac 1000 v and dc 1500 v low voltage power distribution system of electrical . The potential safety hazard of the object being measured be evaluated by using the method of preventive test, so that provides the basis about the object being measured whether the system under test to comply with relevant electrical safety standards.This topic is based on the domestic market demand, with reference to domestic and foreign related legal standards, the development of high-end digital multi-function integrated low voltage electrical tester. Paper elaborates the basic principle 、design thought and realization method of Low voltage electrical integrated tester. in order to improve the operation speed of tester, output resolution, stability and accuracy, The design mainly using the new 32-bit DSP powerful digital computing power. The comprehensive tester contains insulation resistance testing function, Loop resistance testing function, grounding resistance testing function and residual current protection device (RCD) testing function and other electrical safety parameters testing function. Low voltage electrical comprehensive test instrument consists of measuring system and control system. Measurement system includi