How to maintain a dry transformer?

How do dry transformers do a good job in maintaining maintenance? Don't worry, go down, I will introduce the guys.

1. Centrifugal fan automatic automatic automatic control system: Defelt the PT100 temperature sensor temperature in the bottom of the bottom pressure winding temperature measurement temperature data signal. The transformer load expansion, the operating temperature rises, when the winding temperature reaches 110 ° C, the system automatically activates the centrifugal fan; when the winding temperature is as low as 90 ° C, the system automatically stops the centrifugal fan.

2. Ultra-temperature alert, trip: Depending on the PTC discrete system temperature sensor temperature in the bottom pressure windings, the resistance search windings or transformer core temperature data signals are accurately measured. When the transformer winding temperature is raised again, if it is guaranteed 155 ° C, the system is transferred to the temperature alarm device; if the temperature reaches 170 ° C, the substator can no longer run again, and it is necessary to transport overheat to the second maintenance control circuit. Data signals should be quickly quickly quickly. 

3. Substiter producer said temperature display system: The temperature change value is measured in accordance with the PT100 temperature sensor in the bottom pressure winding, and immediately explain the respective phase winding temperatures (three-phase safety safety inspection and larger value description. And recorded history higher temperatures) can be used to type output at 420mA analog input, such as transferred to the distance (interval can do 1200M computer, can optionally match computer jack, 1 intelligent transmitter, can be Tested 31 shifters. The overheating alarm of the system. Signback can also be improved by the PT100 temperature sensor laser sensor resistance data signal attitude, further improve the reliability of the temperature manipulation maintenance system.

Protection method for dry test transformer selection

Sub-electrical manufacturers generally choose IP20 safety protective housings, prevent diameters from more than 12mm solids, non-clean things, snakes. Cats and other small animals, causing short-circuit faults, often seeing the disadvantages, etc., for plugging Part of the security natural barrier is provided. If you must use the IP23 security protective housing, except for IP20 security protection, it is possible to prevent water with equal lines from 60 ° angle. However, the IP23 housing will reduce the transducing professional capacity, and pay attention to the decrease in operating capacity when choosing.