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1, electrical temperature measurement apparatus Significance
- The device structure, material properties influenced by temperature.
- Electrical equipment surface temperature distribution may reflect the operating state of the internal
- Insulated apparatus, defects tend conductors advance in an abnormal manner reflects the temperature field
2, the causes of the heat generating electrical device
- Loop resistance loss is increased due to heat
- Dielectric loss is increased due to heat
- The iron loss increases due to heat generation
- Voltage distribution abnormalities and increased leakage current due to heat
- Lack of oil and other problems caused by fever
3, common defects typical infrared spectrum
4, the conventional apparatus electrical analysis method for determining thermal defects
- Analyzing the surface temperature of the method
- Similar comparison
- Analyzing the image feature Method
- Relative temperature difference method
- File Analysis
- Real-time analysis
Scope relative temperature difference method: current thermal type actuator device, especially for a small load current missing rate pyrogenic type apparatus can reduce defects small load.
5, Infrared temperature measurement accuracy
- distance
- Emissivity
- Level value
- Ambient temperature reference body
- Measuring distance
- Ambient temperature, humidity