CPC G01K 1/024 (2013.01) [G01K 1/14 (2013.01); G01K 3/005 (2013.01); G05B 15/02 (2013.01); H01F 27/085 (2013.01); H01F 27/402 (2013.01); H04Q 9/00 (2013.01); H01F 2027/406 (2013.01); H04Q 2209/47 (2013.01)] | 15 Claims |
1. A measuring apparatus comprising: a temperature sensor configured to measure a temperature of a dry-type transformer, the temperature sensor being arranged on or approximate to a conductor of the dry-type transformer and being covered by an insulating layer of the conductor; and a passive wireless communication module configured to transmit the measured temperature to a reader,
wherein the insulating layer is formed by wrapping an insulating material on the conductor and the temperature sensor,
wherein the conductor is a part of the followings: a high voltage winding of the dry-type transformer, a low voltage winding of the dry-type transformer, a core of the dry-type transformer, and a tap terminal of the dry-type transformer, and wherein insulating material includes an epoxy resin,
wherein the passive wireless communication module is connected to the temperature sensor via a wire, and one end of the wire protrudes from the insulating layer,
wherein the passive wireless communication module is arranged on or inside a dome area of the HV winding, and preferably, near a tap changer or a wire connection terminal on the dome area.
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