Пристрій для контролю ресурсу повітряних високовольтних вимикачів

Abstract

The device to monitor air high-voltage circuit-breaker life comprises three current sensors, six comparator units, five flip-flops three electronic switches, five OR elements, a pressure sensor, two functional generators, four NOT elements, the first univibrator, the first pulse generator, eight AND elements, a commutation sensor, a zero setting unit, a pulse shaper, a signal delay element, five pulse counters, a digital switch, a digital comparator, a differentiating element where the first, second and third current sensor outputs correspondingly through the first, second and third comparators with the first, second and third flip-flops are connected, the outputs being connected correspondingly to control inputs of the first, second and third electronic switches, the outputs being connected with the fourth comparator, the second inputs of the first, second and third flip-flops and the first pulse counters are connected to the first OR element output, the first input being connected with a zero setting unit output, the second input is connected to a pulse former output and the third input is connected with a signal delay element output, a commutation unit sensor output is connected to a differentiating signal output and the first input of the second OR element. There is a second pulse generator, the five NOT element, ninth and tenth OR elements, the second univibrator, the sixth pulse counter, a register in it where the fourth comparator output to the first input of the sixth pulse counter is connected, the fourth comparator output is connected to the fifth NOT element input and to the first input of the ninth AND element, the second input being connected to the second generator output, the second input being connected to the second OR element output, the first input being connected to the second univibrator output, the input as well as the tenth AND element being connected to the fifth NOT element output, the commutation unit sensor output is connected to the second input of the tenth AND element input, the output being connected to the first register input, the input as well as the second input of the second OR element input being connected to the first OR element output, an output digital bus of the sixth pulse counter is connected with an output digital register bus, the output digital bus being connected to an output digital bus of the first functional generator.