Oxidation Inhibitor and Reinhibiting Oil-Filled Transformers
The purpose of the inhibitor is to prevent oxygen from reacting with the oil, thus slowing the aging rate of the oil (and also of the solid insulation). The two most common oxidation inhibitors used in transformer oils are 2,6-ditertiarybutyl para-cresol (DBPC) and 2,6-ditertiary-butyl phenol (DBP).
Characterization of selected oxidation inhibitors in transformer oils
Oxidation inhibitors such as 2,6-ditertiary-butyl-para-cresol (DBPC, also known as butylated hydroxytoluene) and 2,6-ditertiary-butyl phenol (DBP) are used in transformer oils to prevent radical auto-oxidation of hydrocarbon species in the oil, prolonging the transformer's life. Routine monitoring of these c
Determination of DBPC and DBP in Transformer Insulating Oil According
This application note describes how the PerkinElmer Spectrum Two FT-IR spectrometer provides a fast, simple and cost-effective method for evaluating the levels of antioxidant in transformer insulating oil.
Determination of DBPC and DBP in Transformerinsulating Oil
Determination of DBPC and DBP in Transformerinsulating Oil
Determination of DBPC and DBP in Transformer Insulating Oil According
2,6-di-tert-butyl-p-cresol (DBPC) and 2,6-di-tert-butyl phenol (DBP) are commonly used in transformer insulating oil as antioxidants. Transformer insulating oil is often exposed to high temperatures due to the high voltage electrical applications for which it is commonly used. As a result, insulating oil degrades over time, reducing its ability to act as an insulator and possibly leading to
- What is DBPC in transformer insulating oil?
- 2,6-di-tert-butyl-p-cresol (DBPC) and 2,6-di-tert-butyl phenol (DBP) are commonly used in transformer insulating oil as antioxidants. Transformer insulating oil is often exposed to high temperatures due to the high voltage electrical applications for which it is commonly used.
- What is the recommended value of DBPC and DBP in electrical insulating oil?
- The typical recommended value of DBPC and DBP in fresh electrical insulating oil is approximately 0.3% by weight. These inhibitors prevent electrical insulating oil from oxidative degradation, and prolong the life of the oil.
- What are the oxidation inhibitors in transformer oil?
- The phenolic antioxidants 2,6-ditertiary-butyl paracresol (DBPC) (also known as butylated hydroxytoluene (BHT)) and 2,6-ditertiary-butyl phenol (DBP) are the two most common oxidation inhibitors added to the electrical insulating (transformer) oil and mineral oil based lubricants.
- What is the difference between DBPC and DBP?
- DBPC is short for 2,6-ditertiary-butyl paracresol and DBP is abbreviation for 2,6-ditertiary-butyl phenol. The rate at which oxidation inhibitor levels in insulating oils become depleted is dependent upon several factors. The temperature of the oil, amount of oxygen contents, soluble contaminants in the oil, and catalytic agents in the oil.
- What is DBPC oxidation inhibitor?
- DBPC is also known as butylated hydroxytoluene (BHT). SDMyers determines the total concentration of oxidation inhibitor (of DBPC and/or DBP) in transformer oil using a Fourier Transform Infrared (FTIR) spectrometer and following the ASTM method D 2668.
- What is the best way to measure DBPC and DBP levels?
- Both ASTM D2668 and IEC 60666 methods developed using Agilent 5500, Agilent 4500 FTIR, or Agilent Cary 630 spec - trometers with TumblIR and DialPath transmission cells provide the sensitive results necessary to assist personnel monitoring the DBPC and DBP levels in electrical insulating oils.
