Immersed transformer oil system

There are several oil-immersed transformer isolated from each other independent oil system. In the oil-immersed transformer operation, these independent oil inside the oil system is mutually unintelligible, oil is not the same with the operating conditions, were done in oil to gas chromatographic analysis to determine the presence of potential failure.
 (A) within the body oil system. Oil and winding around the oil system are interlinked within the body systems, including the oil cooler or radiator, storage cupboard oil, 35kV and below Oiling casing oil.
 Oiling system must be stored within the oil discharge air lock release, in general, these  circuit breakers should have their own deflated plug. Oil mainly from within the body of the insulation and cooling effect. Oil also increase the insulating paper or cardboard insulation electrical strength. In a vacuum oiling, as some components can not withstand with the main tank can withstand the same vacuum strength, the application of the temporary gate isolation, such as the conservator and the main valve between the tank. Cooler submersible pump head should be enough to avoid the negative pressure intake air. The oil system have a pressure relief device protection system to exclude faulty when the body pressure generated.
 (2) on-load tap switch oil chamber. This part of the oil has its own protection system, ie current relays, conservator, pressure release valve. This switch from the insulating oil chamber and extinguishing current role. Oil will switch off when the load current to produce oil, the oil system to good sealing performance, even in the process of switching arc pressure but also to protect the sealing performance.
 On-load tap switch, although with the main oil chamber inside the oil isolation, but in the vacuum oiling, to avoid damage to the switch room of the seal, the oil should be at the same time with the main vacuum oiling, vacuum oiling, so that the two system has the same degree of vacuum, when necessary, the system should be evacuated when the conservator isolation. Convenient for the structure, the main storage  c mcb circuit breaker   with oil conservator switch designed as an overall isolated from each other.
 (3) 60kV and above voltage level of the hermetically sealed. This oil mainly from within the system insulation effect, or increase oil condenser bushing inside the electrical insulating paper strength. Within the body oiling, should sleeve ends sealed terminals prevent the intake.
 (4) high pressure outlet box oil, or gas outlet point of the oil tank. 500kV high-voltage three-phase transformer outlet via a bellows insulate oil system. The oil system mainly from the insulation.
 To simplify the structure of the oil system can also be connected to the main pipe system linked to the oil or design into separate oil system.
 (5) on a variety of oil-immersed transformer insulation test, the first is deflated, the bleed plug  mcb circuit breaker  the release of the gas may be stored. By analyzing each system oil containing gas chromatographic analysis can predict the presence or absence of potential failure. Each oil system must meet operational requirements, such as oil expansion and contraction of the oil volume changes, put the oil valves, bleed plug, cooler and radiator with the main fuel tank isolation valve. Each oil system has good sealing performance, on-load tap switch oil chamber should be able to be replaced individually without releasing the oil within the body, transporting oil can be released within the body and filled with dry nitrogen.