-
Interfacial Tension of Transformer Oil
It is a process of measuring tension at the interface between transformer oil and water which do not mix. It is expressed in dyne/cm. It is a very sensitive test. Good oil will have an interfacial tension between 40 dyne/cm and 50 dyne/cm. Oil oxidation reduces the interfacial tension. If the interfacial ...
-
Acidity of Transformer Oil
As time goes, the transformer oil becomes aged. Water, heat, oxygen, to acertain extent, accelerate ageing. Alcohol, organic acid, peroxide, ketone and some other gases are produced from oil decompostion. Acid comes from some external sources. Acidity level above 0.2mgKOH/g is not tolerable for normal ...
-
Dielectric Strength of Transformer Oil
The dielectric strength of transformer oil is a measure of the oil's ability to withstand electrical stress without failure. Water, sediment and conducting particle reduce the dielectric strength of transformer oil. Combination of these tends to reduce the dielectric strength to a greater degree. Clean ...
-
Water Content in Oil
Water is harmful in power equipment because it is attracted to the places of greatest electrical stress. Water accelerates the deterioration of both the insulating oil and the paper insulation, liberating more water in the process (heat catalyzed). This is a never ending circle and once the paper insulation ...
-
How to replace temperature sensor and main board of K620 gas sampler?
1. Remove screws at rear cover of vibrator and remove rear cover. 2. Remove screws around the baseplate of vibrator, slightly lift up shell, then, you can see the main board (the same as the one you received.). 3. Pull out the old temperature sensor, and plug in the newly received one, then connect to ...
-
Procedure of Transformer Oil Breakdown Voltage Test
The procedure of transformer oil breakdown voltage test is given below: To assess the insulating property of transformer oil, a sample of the transformer oil is taken and its breakdown voltage is measured. • The transformer oil is filled in the vessel of the testing device. Two standard-compliant test ...
-
Power Supply of Gas Chromatography for Analyzing Transformer Oil Dissolved Gases
AC 220V±10%, 50Hz±0.5 power supply with capacity of more than 2500VA is required, and the power source should not contain a strong noise. The ground wire of GC2010D should be connectedto the exclusive ground peg. The peg terminal should beconnected with copper net and buried into the wet soil by one ...
-
Carrier Gas for Transformer Oil Dissolved Gas Analyzing
Both nitrogen and argon can be applied as carrier gas. A 40 liters of gas cylinder contains carrier gas with purity of higher than 99.999% and with pressure of more than 2Mpa is strongly recommended. For drawing anddetails of gas cylinder connection, please contact us at info@dgaequipment.com.
-
How to carry out dielectric breakdown voltage measurement?
MG-II provides a fully automatic measurement on dielectric breakdown voltage of insulating oils. The operator simply puts sample oil into test vessel, places it in the chamber and initiates the test sequence. The oil test set then carries out measuring. The result is displayed and printed out. Further, ...
-
Use of hydrogen for GC2010D transformer oil DGA
For GC2010D transformer oil dissolved gas analyzer, hydrogen is used for flame forming in FID detectors and for reducing of trace-level carbon monoxide and carbon dioxide into methane in the methanator. A high-purity Hydrogen Generator (HG-1083A) can satisfy the needs of hydrogen in GC2010D. Additionally, ...
