![]() ![]() ![]() So why is it, if all these tests must be routinely performed that Dissolved Gas Analysis is the only physicochemical test that is also done online? What is unique about Dissolved Gas Analysis that it alone has become an online test, and for single gas monitors, what is the reason that all the monitors focus of Hydrogen? It all boils down to one thing – The Cost-Benefit of Online Monitoring for Oil Filled Power Transformersįor most physicochemical tests, the recommended frequency for getting a measure of the current state of the electrical asset is every 1 to 2 years. The information would come back to the electrical asset manager in the form of a transformer oil testing report. An example of the range of tests that are typical for a lab are detailed here. Samples of oil from a transformer would be collected and sent to a laboratory for testing perhaps once per year. The above is a small sample of the tests that an electrical asset manager might request from an oil laboratory. Transformer Oil Acidity (Total Acid Number) Multiple test methods describe the parameters that should be tested for and the methods that should be used Method For that reason, monitoring of the transformer invariably involves both chemistry and physics. Chemistry in the for of oil, paper, pressboard and metal and physics thermal and electrical effects. Oil filled electrical equipment is a complex mixture of chemistry and physics. Why is this? Why is Dissolved Gas Analysis the only oil test that happens online? Should you be monitoring more than Hydrogen? Hydrogen Gas in Transformer Oil and the Complexity of Testing Oil Filled Power Transformers Many single-gas online Dissolved Gas Analysis monitors focus on Hydrogen as the correct gas to monitor. AKM 44611/48471 Top-Mounted ThermometerĠ6.04.20 Is Hydrogen Gas in Transformer Oil the Best Early Indicator of a Fault?.Qualitrol 120 Side-Mount Thermometer with 6″ Dial.Qualitrol 165/167 Side-Mount Thermometer with 5″ Dial.Qualitrol 121 Direct Mount Thermometer with 4.5″ Dial.Qualitrol 150/151 Side-Mount Thermometer with 4″ Dial.Qualitrol NOMAD-Touch Portable Fiber Optic Monitor.Neoptix T1 Fiber Optic Temperature Probe.Neoptix T2 Transformer Temperature Probe. ![]()
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