Transformer Oil IEC 60296: 2012 Inhibited

Transformer Oil IEC 60296: 2012 Inhibited

Dana Transformer Oils are electrical insulating oils produced by distillation of virgin paraffinic crude oil followed by modern technologies involving high-pressure hydrogenation and hydrotreatment. All the processes are monitored closely, and appropriate Base Oil fractions are selected for further processing. Further processing involves the removal of moisture and polar impurities to obtain good electrical properties. The technologies result in products with very low pour points, excellent oxidation stability, cooling characteristics and electrical properties. These properties make them suitable for the most demanding transformer applications

Benefits

• Excellent oxidation stability
  
• Excellent low-temperature performance
  
• Excellent cooling properties
  
• High dielectric strength for electrical insulation

Dana Transformer Oil is recommended for oil-filled power and distribution transformers, rectifiers, circuit breakers and switchgear where an uninhibited transformer oil or dielectric fluid is specified. It will dissipate heat, insulate windings and quench the spark between the opening contacts when tap changing

Transformer oil (Or Dielectric oil) is electrically insulating oil that has the tendency of remaining stable even at elevated temperatures. They are used in a variety of heavy-duty electric machinery including oil-filled transformers, some type of high voltage capacitors, fluorescent lamps ballasts.

Dielectric oils also find their application in high voltage switches and circuit breakers.

The role of a transformer oil

• Basically, Transformer oil is needed for performing a couple of important functions.
  
• It provides liquid insulation in electrical power transformer
  
• The parts in a transformer which are at different voltages need to be insulated from each other. Oil insulation is relatively more affordable in comparison to solid insulation. Also, in contrast to air insulation the oil provides a much more compact construction.
  
• It removes heat generated by the transformer, thereby acting as a coolant
  
• The transformer winds dissipate a lot of electric energy in the form of heat energy. This heat needs to be removed. Transformer oil absorbs this heat from the windings and removes it from the transformer by conducting it to outside of the transformer.
  
• It extinguishes the arc formation
  
• Incipient faults like inter-turn short circuit are likely to give rise to arc generation, transformer oil if the present has the tendency of quenching the arc formation before it causes any serious damage.
  
• Functions as a vibration dampener
  
• The transformer core involves a pulsating magnetic field which essentially means that the transformer is continuously subjected to vibrations. The oil damps down the vibrations and minimizes the sound.
  
• Provides lubrication to the Transformer components
  
• Dielectric oil is very important for providing lubrication to OLTC(On Load Tap Changer), which happens to be the only moving part inside the transformer.

Dielectric Oil formulation

• In general, the Transformer oil consists of two main components, the base oil component, and an additive. The base oil component makes at least 80% of the total weight of dielectric oil formulation. It comprises paraffinic base oil having a paraffin content of greater than 80 wt % paraffin.

Types of Transformer Oils

The Dielectric oils can be majorly categorized into a couple of categories –

• Paraffin based transformer oil
  
• Paraffin transformer oil is commonly used in many countries (including India) owing to its high availability. The problem with the Paraffin oil is that it has a lower oxidation rate than Naphtha Oil which means that the oxidation product (sludge) is insoluble, and is precipitated at the bottom of the tank, which ends up obstructing transformer cooling system.
  
• Naphtha based transformer oil
  
• It gets more easily oxidized as compared to paraffin oil, the sludge does not get precipitated and hence effective cooling takes place in case of Naphtha based Transformer Oil.

Main Transformer Oil categories

There are certain international specifications that are assigned to summarize the physical and chemical properties of dielectric oils. The most popular of these specifications include IEC 60296 and ASTM D3487, which are applicable to naphthenic or paraffinic mineral oils.

The IEC 60296 specification can be further sub-divided into three categories, classification based on the level of antioxidants contained in the oil

• Non-inhibited” category (U): antioxidant content = 0%
  
• “Slightly inhibited” category (T): antioxidant content < 0.08%
  
• “Inhibited” category (I): antioxidant content < 0.4%

Based on levels of antioxidants contained in the oil, even ASTM D3487 is divided into a couple of categories

• Type I: antioxidant content < 0.08%
  
• Type II: antioxidant content < 0.3%
  
• Applications of Transformer Oil

As the name suggests, Transformer (or Dielectric) oils are generally used with a transformer, they can be used with both Distribution and Power transformer

• Distribution transformer
  They are the ones installed in the location of the city in order to provide the required voltage at the consumer terminals. This type of transformer operates at light loads in general.
  
• Power transformer
  These types of transformers are installed at finishing or receiving end of long high voltage transmission lines. They commonly operate at full load rating.
  Apart from transformers, the transformer oils can also be used in circuit breakers, tap changers, switches, fuses, X-ray machine and Oil-immersed electrical equipment

DANA Lubricants Factory LLC , UAE is leading manufacturer of Automotive Lubricant Engine Oils ( Huile Lubricantes ) , Industrial and Marine Lubricant Engine Oils , Agriculture engine oils and grease of various Oils of Viscosities and API Performance levels namely SAE 30, SAE 40, SAE50 SC/SF/SJ/SL/SM/SN Gasoline Engine Oil, SAE 30/40/50/60/70 API CC/CF4/CH4/CI4/CJ4 Diesel Engine Oils and Multigrade engine oils namely SAE 15W40 DieselEngine Oil API CH4/CI4/CJ4, SAE 20W50 SL/SM/SN Gasoline Engine Oil, Gear Oil SAE 90, SAE 140 GL-4, GL-5 Gear oils, Hydraulic Oils ISO VG 46, 68, 100, 150, ATF Dexron I /II/ III Automatic Transmission & Clutch Fluid. DANA Lubricants Factory LLC is also manufacturing and filling Brake Fluid & Clutch Fluid, Radiator Coolant/ Antifreeze in all concentrations of 100%, 50 %, 33%, 25%, 10%. All these coolants are glycol based with Monoethylene Glycol(MEG ), DiEthylene Glycol ( DEG) and Tri Ethylene Glycol ( TEG).

DANA Group is headquartered in Deira Dubai (10 Kms away from International Airport) and is having modern and well equipped production plant / Factory with automated filling machine for automotive lubricant engine oils and industrial oils of 8 nozzles and 4 nozzles, Auto cap rotator auto sealer, Auto Printing machine, Auto Carton packing machine. Two semi automated cranes and four forklifts are available for movement of goods, filled engine oil metal drums , oil filled cartons of all sizes 1L X 12 Carton, 3L X 6 Carton, 4L X 6 Carton, 5L X 6 Carton, 6L X 4 Carton, 4 L X 4 Carton, 3L X 4 Carton within factory. Fleet of vehicles and trucks is available for transportation and loading of goods safely in the containers of sizes 20 feet and 40 feet.

DANA Lubricants has more than 50 people engaged on production floor to ensure smooth running of plant for example Batch Blending, Mixing and heating, Filling of engine oils in packings of various size and testing engine oils for Flash Point, Pour point, Antifreezing, Kinematic viscosity at 40 C & 100 C, CCS Test Cold Cranking Simultation Test, TBN Testing. Lubricantes Engine Oil is filled only after engine oil passes all bench tests and quality tests.