One-to-three switching system for CT characteristic verification

• Main Authors: DU LINA, XING QIUYUE, LIU WEI, GAO QIANG, HE RUI, WANG XIAODONG, WANG XULIANG, JI HAIMING, DONG XINGHUA, BAI XU
• Format: Patent
• Language: Chinese; English
• Published: 18.07.2023
• Subjects: BASIC ELECTRIC ELEMENTS; BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLYOR DISTRIBUTION OF ELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; RELAYS; SELECTORS; TESTING

The invention relates to the technical field of CT verification, in particular to a one-to-three switching system for CT characteristic verification. The device comprises a tester, a switch cabinet and a switching device, a CT chamber is arranged in the switch cabinet, and a current transformer is arranged in the CT chamber; the input end of the switching device is electrically connected with the tester, and the output end of the switching device is connected with the current transformer through the one-to-three switching circuit; the tester is used for measuring the transformation ratio, polarity, excitation data and error data of the current transformer and drawing an excitation curve and an error curve; the one-to-three switching circuit converts one group of incoming lines into three groups of outgoing lines, and the switching device enables the group of incoming lines to be only correspondingly conducted with any group of the three groups of outgoing lines at the same moment. After the method is applied,