公开(公告)号：US20210131876A1

公开(公告)日：2021-05-06

申请号：US16963210

申请日：2018-01-19

Applicant: ABB Power Grids Switzerland AG

Inventor： YiBo ZHANG ,  Delun MENG ,  Jiansheng CHEN ,  Chun LI

IPC: G01K1/024 ,  G01K1/14 ,  G01K3/00 ,  H01F27/08 ,  H01F27/40 ,  G05B15/02 ,  H04Q9/00

Abstract: An apparatus includes a temperature sensor configured to measure a temperature of a dry-type transformer, and the temperature sensor is arranged on or proximate a conductor of the dry-type transformer and is covered by an insulating layer of the conductor. The apparatus further includes a passive wireless communication module configured to transmit the measured temperature to a reader. The temperature of the dry-type transformer can be measured accurately, thereby improving the reliability and safety of the dry-type transformer. Accordingly, temperature measurement for the dry-type transformer can work appropriately in a cost-effective and efficient way.