Method and device for rapidly and precisely measuring secondary pick-up voltage of relay

Application Number: 00102135
Application Date: 2000.02.28
Publication Number: 1264042
Publication Date: 2000.08.23
Priority Information:
International: G01R31/327
Applicant(s) Name: Guo Renlong
Inventor(s) Name: Guo Renlong
Patent Agency Code: 44101
Patent Agent: jiang yaochun
Abstract A method and device for rapidly and accurately measuring the secondary operating voltage of relay is disclosed. An adjustable voltage is applied across the relay coil and the voltage is adjusted from low to high values gradually. The gradually raised coil current is sampled by a current sampling circuit. The current signal is fed to a knee point detector to measure the voltage at knee point, which is just said secondary operating voltage of relay. Its advantages are high automation level and high accuracy.