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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.
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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, ...
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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, ...
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GC2010D-II Vehicle-mounted Transformer Oil Dissolved Gas Analyzer can Analyze 1
Use Argon as carrier gas, GC2010D-II Vehicle-mounted Transformer Oil Dissolved Gas Analyzer (Similar Portable DGA) can analyze 11 fault gases. That is:hydrogen(H2), oxygen(O2), nitrogen(N2), carbon monoxide(CO), carbon dioxide(CO2), methane(CH4), ethane(C2H6), ethylene(C2H4), acetylene(C2H2), cyclopropane(C3H6),Propane(C3H8).
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When to check capacitance and Tan Delta of the insulating materials?
1. During manufacturing process preferably at each stage.2. Depend on rate of change of Tan delta, Voltage, Time(Month/Year)3. Frequency of testing depends on history of past failures on same machine.4. Frequency of testing depends on environmental conditioins. More humidity, temperature, pollution would ...
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Purposes of the Capacitance and Tan Delta of the insulating materials?
1. Predict the future unexpected breakdown of the insulation of HV equipment.2. Plan the maintenance schedule.3. Repair the insulation before actual flashover, saving high cost of replacement of material which will reduce the iinventory well as delay in procurement at the last minute.4. After repair, ...
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Why to measure the Capacitance and Tan Delta of the insulating materials?
Electric properties of the insulating system change due to age and continuous electrical stress. The principal contributor to the unexpected breakdown of the high voltage equipment is the insulation failure. As compared to the magnetic, conducting and insulating materials which form the basics of any ...
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Oil Tan Delta Test
Oil Tan Delta test is also known as the Loss Tangent or Dielectric Dissipation Factor measurement. Tan Delta may be defined as the measurement of the cosine of the phase angle or the sine of the loss angle. It is basically the measurement of the leakage current through the oil, which in turn is a measure ...
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IEEE Guidelines for Power Factors
The IEEE has suggested guidelines for Power Factors depending on the type of oil and the unit it is being used in (IEEE C57, 06-1991). Some representative values are given below:
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Power Factor Test of Insulating Oil
The power factor of insulating oil equals the cosine of the phase angle between an AC voltage applied to oil and resulting current. Power factor indicates the dielectric loss of oil and, thus, its dielectric heating. The power factor test is widely used as an acceptance and preventive maintenance test ...
