SF6 gas density relay checking instrument and checking process

Abstract

The invention discloses a calibration process of a calibrator of an SF6 density relay and comprises the following steps: step 1, the process is started; step 2, a self check is carried out; step 3, an instruction is chosen from the choices of calibration preparation, data query, time setting, pressure conversion, help viewing and device marking; if the calibration preparation is chosen, a step 3.1 is carried out, and in the calibration preparation, a step 3.11 is firstly implemented to set a number for the test object; then a step 3.12 is carried out to select a number of contact points; a step 3.13 is carried out after one item is selected, in which a nominal parameter is set; then a step 3.14 is carried out to adjust the pressure to a nominal value; after that, a step 3.15 is carried out to start a calibration; a step 3.16 is carried out after the calibration is finished, which chooses whether to end the calibration or not; if the choice is no, the invention returns to a step 3.14, while if the choice is yes, the invention turns to a step 3.17 to store and print the result. The invention has the advantages of simple operation, fitting for on-site calibration processes, and labor-saving property and convenient using.

Description

technical field [0001] The present invention relates to a kind of SF 6 The performance of the gas density relay is verified by the SF 6 Gas density relay calibrator and calibration process. technical background [0002] SF 6 Electrical products have been widely used in the power sector, industrial and mining enterprises, and promoted the rapid development of the power industry. How to secure SF 6 The reliable and safe operation of electrical products has become one of the important tasks of the power sector. SF 6 Gas density relay is SF 6 One of the key components of electrical switches, it is used to detect SF 6 SF in the electrical equipment body 6 The change of gas density, its performance directly affects the SF 6 Reliable and safe operation of electrical equipment. SF installed on site 6 Due to the infrequent action of the gas density relay, after a period of time, the phenomenon of inflexible action or poor contact of the contacts often occurs, and some also...

AI Technical Summary

Problems solved by technology

This method is mainly used in the field, and it has the following problems: (1) the temperature has a great influence, and it is difficult to ensure the accuracy; (2) the use of SF 6 The meter reading on the gas storage cylinder is very poor in accuracy and cannot guarantee accuracy; (3) SF 6 The density relay is actually used in the step-down process, but it is not consistent with the actual application and affects the accuracy of the calibration.

However, these calibrators are troublesome and inconvenient to use, and their calibration operation steps do not meet the requirements of on-site use.

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