category：Machinery and industry equipment / date：2022-02-19 09:46:12 / browse：831 / comment：5
The sampling container is a colorless glass bottle with a wide mouth ground glass plug with a volume of .kg or kg. - bottles shall be collected at a time for analysis and experiment. Labels shall be attached during sampling. Pay attention to the name, source, sampling date, sampling person, weather conditions and other materials of the oil sample.Oil leakage at looper flangeHouston,How is the quality level of dry-type transformer compared with foreign countries?From the appearance, the packaging types are different. The transformer core and electromagnetic coil can be seen immediately for dry-type transformer,HoustonGrounding resistance of distribution transformer, and only the shell can be seen for oil immersed transformer;Maramba,The power transformer conductor refers to the connecting transmission line between each electromagnetic coil, between the electromagnetic coil and the group outlet pipe and between the electromagnetic coil and the tap changer.From the appearance, the packaging types are different. The transformer core and electromagnetic coil can be seen immediately for dry-type transformer, and only the shell can be seen for oil immersed transformer;If the power transformer stops running for more than h (if the allowable time should be reduced when the ambient humidity is & amp; gt; %),HoustonDistribution transformer experiment, it should be insulated before putting into use, and accurately measured with a V grounding megger. The insulation resistance from the primary side to the secondary side and the ground should be ^ mfl, and the insulation resistance from the iron core to the ground should be & amp; gt; mfl (note that the grounding device piece should be removed).
& ldquo; YN, D & rdquo;, in which indicates that when the working voltage phasor of the primary side line, as the minute hand, refers to the position at o'clock, the phase voltage phasor of the secondary side is at o'clock. That is, the phase voltage UAB of the secondary side lags degrees behind the working voltage uab of the primary side line (or degrees ahead).After the power transformer has been used for a long time, common faults of iron core will occur. Don't worry. Contact the transformer manufacturer, and the manufacturer will assign professional technicians for inspection. The main reasons are as follows:Difference between dry-type transformer and oil immersed transformer:Click to view, the oil sample can be used only after sufficient standing.Oil immersed transformer companyManufacturing process and steps of dry-type transformer
After no-load test run is normal for h, it can be transferred to on-load operation and the load shall be gradually increased from %, % and % by grade.Total quality assurance,When we apply oil immersed transformer,HoustonParameters of oil immersed transformer, we all know that it works with the help of oil. What if the oil immersed transformer is on fire? What countermeasures should we do?The appropriate power saving calculation formula should be derived from the following process: active power loss of large capacity transformer: load of large capacity transformer; PDK - short-circuit fault loss of large capacity transformer kW. Active power loss of small capacity transformer: when a pump room is in normal operation, and each pump is driven by kW motor, so the usual load is KW, CST = . One kva transformer was originally configured, and the capacity utilization rate introduced by the transformer manufacturer is only %Different diversion methods, dry-type transformers mostly use silica gel waterproof casing, while oil transformers mostly use porcelain waterproof casing;Houston,Analysis of common faults of oil immersed transformer:The sampling container is a colorless glass bottle with a wide mouth ground glass plug with a volume of .kg or kg. - bottles shall be collected at a time for analysis and experiment. Labels shall be attached during sampling. Pay attention to the name, source, sampling date, sampling person, weather conditions and other materials of the oil sample.Power transformers are used in all walks of life
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