Winding thermometer operation maintenance is very important

Transformer oil temperature indicators and mild winding thermometer is dedicated to monitoring the transformer top oil temperature of transformer winding instrument, in ensuring safe and reliable operation of the large and medium-sized power transformer, extend the life of the transformer winding thermometer plays an important role. The service life of the transformer temperature depends on its winding, this is because the winding temperature ( Especially the hottest part of the temperature) Temperature and aging of insulation. However, due to the high voltage transformer winding, direct winding temperature is measured with a temperature measuring device is unlikely; For indirect measurement of transformer winding temperature measurement is a practical and effective. Due to winding thermometer is adopting thermal simulation technology of hot point temperature monitoring of the power transformer coil, so the rise of temperature of the electric heating element properties conform to the ideal temperature characteristic is one of the key factors which affect measurement accuracy of the instrument. This instrument has a sealing system ( Bulb, capillary, spring tube) , difficult to repair after damage, can only be replaced, if the safety distance is not the main transformer must be a power outage. To ensure that the instrument is accurate and reliable power supply system thermal technical supervision. So we must be careful in everyday use. Installation should be careful when adjusting the insertion depth, make the insert depth of the largest, ensure the bulb is completely submerged oil. Temperature between the packet to the header capillary must have corresponding fixed ( Distance of about 300 ram) , capillary can not have squashed or distorted sharply, the bending radius should not be less than 100 ram, redundant capillary should be set to 200 ram circle, fixed on the transformer ontology. Transformer with a thermometer in a high incidence of defects when approaching or reaching the instrument use fixed number of year, the thermometer should be replaced with the overhaul and technical. Transformer oil temperature indicators and winding thermometer is one of the important equipment to ensure the safe and stable operation of the main transformer. In addition to pay special attention to the instrument calibration and installation quality as stipulated in the regulations, operation maintenance work is also very important.