Protection device outlet matrix calibrator and protection device outlet matrix calibration method

Abstract

The invention discloses a protection device outlet matrix calibrator and a protection device outlet matrix calibration method. The number of ports is the same as the number of sampling circuits, and the ports are in one-to-one correspondence with the sampling circuits; the ports are connected to a processor through the sampling circuits corresponding to the ports; each sampling circuit comprises atriode Q, a resistor R1 and a resistor R2; one ends of the resistors R1 are connected to the ports, and the other ends of the resistors R1 are connected to the base electrodes of the triodes Q; one ends of the resistors R2 are connected to the collectors of the triodes Q, and the other ends of the resistors R2 are connected to a power supply VCC; the collectors of the triodes Q are connected to the processor, and the emitters of the triodes Q are grounded; and the resistance values of the resistors R1 are greater than or equal to 10M ohm. According to the protection device outlet matrix calibrator and the protection device outlet matrix calibration method, acquisition of multiple channels of voltage signals at the same time is realized, and an equipment insulation inspection instrument isnot triggered in the acquisition process, so that the use efficiency is improved, and detection failure caused by accidental triggering is reduced.

Description

technical field [0001] The invention relates to electrical measurement technology, in particular to a protective device outlet matrix calibrator and a calibrating method. Background technique [0002] The export inspection of the protective device is an important means to verify whether the protective device can be exported correctly. The verification results are directly related to the stable operation of the power grid. [0003] 1. The most conventional calibration method at present is the method of measuring the potential of the outlet platen to the ground with a multimeter. This method has the disadvantages of high work intensity, low verification efficiency, and many human interference factors, making it difficult to guarantee the reliability of the verification results. [0004] 2. Most of the measurement and control devices on the market today cannot meet the requirements of actual work. These problems are mainly caused by ① few interfaces, ② complicated connection ...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the means of the existing protective device outlet inspection are read by human interference factors, and the connection and disconnection are complicated, which is not conducive to display. The purpose is to provide a protective device outlet matrix calibrator and a calibration method to solve the above-mentioned question

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