The main functions of transformer tank oil include lubrication, cooling, corrosion resistant and sealing. The design structure of the different types of gearbox varies and the requirements for lubrication vary considerably. The friction properties, lubrication requirements and temperature variations of the internal parts of the automatic and manual transformer boxes vary according to the working principles and mechanical structure. As a result, the base oils and additive formulations for the oil preparation of transformer tanks vary considerably, and the oil performance indicators and quality requirements for both are not identical。
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Manual transformer tank oils usually have a high viscosity, capable of creating stable and lasting oil membranes between high-speed and high-load gear and bearings, and reducing mechanical wear. At the same time, the manual transformer tank oil contains additives that are specific to mechanical gear rods and switch synchronizers, which reduce friction resistance and ensure smooth and accurate switching. The automatic transformer tank oils (atfs) are mostly low viscosity liquids, which enhance their hydraulic transfer function and adapt to the work requirements of multiple centrifuges and valves in automatic transformers, whose additives emphasize antioxidation and foam resistance。
Therefore, the combination of different types of transformer tank oil or the insertion of automatic transformer tank oil in manual transformer tanks would have a number of adverse consequences. First, a mixed fluid viscosity may deviate significantly from the design parameters, resulting in an ineffective formation of lubricating oil film, increased mechanical wear of gears and bearings, and accelerated ageing and damage to parts. Second, chemical conflicts between different additive components may reduce lubrication performance and even produce sediments, jam small oil paths and affect the proper functioning of the internal lubrication system in the gearbox. In addition, the infusion of oil may affect the function of the resonator, causing resistance difficulties, noise and even damage to the gearbox. Once these problems arise, maintenance costs are high and pose a threat to safe driving。
The choice of brand and model of manual transformer tank oil should be carried out strictly in accordance with the requirements of the car manufacturer. Modern vehicle service manuals specify the specifications of the transformer tank oils recommended for use, such as the api gl-4 or gl-5 grade or even the certified product of a particular manufacturer. Compliance with these requirements not only guarantees a good lubrication environment for the gearbox, but also increases its maintenance cycle and useful life. In addition, the regular replacement of manual transformer tank oil is an important part of the maintenance effort, as the additives in the transformer tank oil gradually fail over time and use, contaminants and metal chips accumulate and reduce the performance of the oil。
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The fact that transformer tank oil cannot be combined, in particular that manual transformer tank oil must be dedicated to manual transformer tank oil, is based on scientific considerations of the complex mechanical structure and lubrication requirements within the gearbox. Proper oil selection and standard maintenance practices can both guarantee the safe and stable driving of vehicles and effectively prolong the life of speedboxes and the vehicle as a whole. As motor vehicle users and maintainers, the importance of gear tank oil should be fully recognized, the phenomenon of oil mixing should be eliminated and strictly regulated so as to achieve the optimal balance between vehicle performance and economic efficiency。
