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Dissolved Gas Analysis(DGA) can monitor potential failure risk of transformer
Electrical transformer transforms voltage from one level to another, usually from higher to lower voltage. Transformer uses oil as a coolant and insulator. Gases are formed within this oil due to natural aging and faults from oxidation, vaporization, oil breakdown, electrolytic action or insulation decomposition. ...
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Why does the oil need Acidity Test?
High acidities accelerate the degradation of the paper insulation and causes corrosion of the steel tanks. Usually, it is suggested that the oil needs to be changed when the acidity approaches 0.3mgKOH/g, and when the acidity reaches 0.1mgKOH/g, the user should concern the acid number. KL632 Automatic ...
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3 ways to extract the gas from the oil for gas analyzing
Insulating fluids, generally mineral oils, are used in transformers. Under normal and mild conditions, there is very little decomposition. Occasionally however, overheating of the oil occurs and decomposition products are formed. If the concentration of these gases reaches a critical point, the chances ...
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Working principle of transformer oil purifier
When the machine starts work, contaminated transformer oil enters into the primary filter where large size particles will be filtered off; after heating, the transformer oil enters into vacuum separator, under the conditions of high temperature, high vacuum degree, large area and high pumping speed, ...
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Procedure of on-line working of transformer oil purifier
The following preparations should be made: a. Prepare some clean transformer oil in an amount of 5% - 6% of the oil volume of the transformer; b. The outlet of the oil-discharging valve at the transformer bottom should match the inlet of the transformer oil purifier; c. Fill the vacuum tank with clean ...
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Why does transformer oil need to be purified?
The primary function of electrical insulating oil is to cool and insulate, also to eliminate electric arc when switch off. Under the action of heat and electromagnetic field, once transformer oil contacts with oxygen and gradually oxidized, it would generate alcohol, aldehyde, acid and the like, which ...
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Features of GC2010D transformer oil dissolved gas analyzer
GC2010D gas chromatograph special for analyzing transformer oil dissolved gases consists of sample injector, detector, chromatographic column case, nickel converter, gas flow control system, circuit control detecting system and dedicated online workstation, etc. Features: GC2010D gas chromatograph has ...
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Transformer oil dissolved gas analysis
Transformer oil dissolved gas analysis is a useful, predictive and effective way for evaluating transformer health. The breakdown of electrical insulating material and related components inside a transformer generates gases within the transformer. Therefore, the identity of these gases being generated ...
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Heart-cut technology of gas chromatograph
The full separation and determination of specific compounds could be difficult in some samples which contain many compounds. In this situation, heart-cut technology is applied to separate and determine specific compounds by using two chromatographic columns with different separation characteristics.
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Principle of gas chromatography
The sample is injected into the gas chromatograph, enters a gas stream which will transport the sample into a separation tube which known as Column. Usually, an inert gas such as helium or an unreactive gas such as nitrogen is used as a carrier gas. Various components are separated inside the column. ...
