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  • Furfural analysis of transformer oil Furfural analysis of transformer oilFuran derivatives are a measure of the degradation of cellulose paper. When the paper ages, its degree of polymerization reduces, so its mechanical strength decreases. The degree of polymerization of the paper can be directly related to the concentration of furan derivatives ...
  • Libya tender for the flash point for oil transformer Libya tender for the flash point for oil transformerGeneral Electrical Company of Libia (GECOL)Tender Main CommitteeTechnical specifications for the flash point for oil transformer1. Power supply: AC(220 +/-10%)V, 50Hz2. Temperature measurementRange: Room temperature - 300 degreeRepeatability: not more ...
  • Libya tender for the oil dissolved gas analyzer Libya tender for the oil dissolved gas analyzerGeneral Electrical Company of Libia (GECOL)Tender Main CommitteeTechnical specifications for the oil dissolved gas analyzerHydrogen (H2): 5 - 5000 ppmCarbon monoxide (CO): 1 - 50000 ppmCarbon dioxide (CO2): 2 - 50000 ppmMethane (CH4): 1 - 50000 ppmAcetylene ...
  • Libya tender for the oil insulation breakdown tester Libya tender for the oil insulation breakdown testerGeneral Electrical Company of Libia (GECOL)Tender Main CommitteeTechnical specifications for the oil insulation breakdown testerTesting voltage: 100 kV RMSMains supply voltage: 110, 230, 240 V / 50 or 60 Hz - selectable via voltage selectorVoltage measurement: ...
  • Purchasing gear lubricants: be careful when playing the numbers game Purchasing gear lubricants: be careful when playing the numbers gameWritten by John SanderReferences1. Thibault, R., "Certification Matters: Part III Gearbox Principles and Lubrication". Lubrication Management and Technology, Applied Technology Publications, Barrington, IL, July/August 2011.2. Cooper, ...
  • Purchasing gear lubricants: be careful when playing the numbers game Purchasing gear lubricants: be careful when playing the numbers gameWritten by John SanderConclusionSeveral resources are available to help the end user select the right gear lubricant. Some have focused only on speed, temperature and load, while others have added operating environment to the mix. Still ...
  • Purchasing gear lubricants: be careful when playing the numbers game Purchasing gear lubricants: be careful when playing the numbers gameWritten by John SanderImportant NumbersAssuming that steps 1-10 have been considered and the final decision comes down to a comparison of data sheets, the question still remains, what numbers should one consider important? A review of ...
  • Purchasing gear lubricants: be careful when playing the numbers game Purchasing gear lubricants: be careful when playing the numbers gameWritten by John Sander10. Evaluate PriceEvaluating the price is the last step in this process for a reason. Unfortunately, many gear oil purchasers evaluate price first, and sometimes it is the only number they evaluate. This can be ...
  • Purchasing gear lubricants: be careful when playing the numbers game Purchasing gear lubricants: be careful when playing the numbers gameWritten by John Sander9. Ensure Fluid Durability for Extended DrainsToday, people are realizing that there is a hidden cost to using inexpensive, lower performance lubricants. The less time a lubricant lasts during service, the more ...
  • Purchasing gear lubricants: be careful when playing the numbers game Purchasing gear lubricants: be careful when playing the numbers gameWritten by John Sander8. Consider Gear SpeedViscosity often is related proportionally to the speed at which the gearbox is operating. The general belief is that high-speed applications require low-viscosity lubricants, and low-speed ...