Transformer oil, a type of insulating and cooling oil used in transformers and other electrical equipment, needs to be tested periodically to ensure that it is still fit for purpose. This is because it tends to deteriorate over time. Testing sequences and procedures are defined by various international standards, many of them set by ASTM. Transformer oil testing consists of measuring breakdown voltage and other physical and chemical properties of samples of the oil.

1. Appearance - IS : 335-1993(RA 2005)

2. Density - IS : 1448(Part 16)(RA 2005)

3. Interfacial Tension Ring Method - IS : 6104-1971

4. Neutralization Value (Acidity) Chemical Test - IS : 1448(P-2)-2007

5. Sludge Content Chemical Test - IS : 1866 Annex-A

6. Moisture (Water) Content Karl Fischer Titration - IS : 13567-92

7. Flash Point Pensky Martens - IS : 1448(P-21)-2012

8. Dissolved Gas Analysis (DGA) Gas Chromatograph - IS : 10593 & IS: 9434-1992

9. Di-Electric Strength (BDV) Electrode Type - IS : 6792-1992

10. Di-Electric Dissipation (Tanδ) 3 Terminal Cell - IS : 6262-1971

11. Specific Resistance (Resistivity) 3 Terminal Cell - IS : 6103-1971

12. Furan Analysis HPLC Method - ASTM D 5837-1999

Transformer oil Testing Lab is subjected to electrical, thermal and mechanical stresses. In addition there are contaminations caused due to chemical interactions with windings and other solid insulations, catalyzed by high operating temperature. As a result, the original chemical properties of transformer oil changes gradually, rendering it ineffective for its intended purpose after many years. Hence this oil has to be tested periodically to ascertain its basic electrical properties, and make sure it is suitable for further use or necessary actions like filtration/ regeneration has to be done.

1. ACIDITY(NEUTRALIZATION NUMBER)

This instrument used determination of acidic constituents in transformer oil. This acid number is used as a guide in the quality of transformer oil.

2. BDV (BREAK DOWN VOLTAGE)

The voltage at which the transformer oil breaks down when subjected to AC electric field with a continuous voltage raise.

3. IFT (INTERFACIAL TENSION)

This instrument used for measuring under non-equilibrium condition, the Interfacial tension of mineral oil against water, which has been shown by practice to give reliable indication of the presence of hydrophilic compounds in transformer oil.

4.FLASH POINT

This instrument used for measuring the Flash Point by Pensky Martens closed cup tester of transformer oil, fuel oils, lubricating oils, suspension of solids, liquids that tend to form a surface film under test conditions and other liquids.

5.WATER CONTENT (PPM)

This Instrument used for the determination of water content in transformer oil unused or used insulating liquids with coulometrically generated Karl Fischer regent. We can measure from 1 ppm to 1000 ppm

6.CAPACITANCE, TAN DELTA AND RESISTIVITY

This testing instrument to measure three important parameter in transformer oil - Tan Delta, Dielectric Constant and Resistivity of an insulating medium. Tan delta and Dielectric Constant balance with the aid of a synchronous and phase sensitive null detector. Resistivity with DC Voltage.

7. DISSOLVED GAS ANALYSER (DGA)

DGA is the most sensitive and reliable loss prevention technique and it gives an early indication of abnormal behaviour of transformer. This instrument measures the concentrations of dissolved gas or free gases in transformer oil and be interpreted to diagnose the condition of transformer oil filled electrical equipment in service and suggest future action.

8. MULTIPLE GAS EXTRACTOR

This instrument used for extracting dissolved gas from transformer oil.

9.DENSITY

Density is significant in determining the quality of a transformer oil and may be useful for type identification or to suggest marked compositional changes.

10.KINEMATIC VISCOSITY

This method describes a producer for the determination of the kinematic viscosity of liquid petroleum products, both transparent and opaque, by measuring the time for a volume of liquid to flow under gravity through a calibrated glass capillary viscometer. The dynamic viscosity can be obtained by multiplying the measured kinematic viscosity by the density of the liquid

11.DEGREE OF POLYMERISATION

This test method describes a standard procedure for determining the average viscometric degree of polymerization of new or aged electrical papers. The determination is made by measuring the intrinsic viscosity of a solution of the paper in an appropriate solvent.

12.FURAN ANALYSIS

This Test method is to determine the degradation of cellulose paper insulation. High Concentration or unusual increase in the concentrations of furanic compounds in oil may indicate cellulose degradation from aging or incipient fault conditions. The levels of furanic Compounds in oil relate to the average deterioration of the insulating paper. This Instrument used for the analysis of 2- Furfural related furan compounds resulting from the degradation of cellulosic insulation and found in mineral insulating oil samples taken from electrical equipment.

13.POUR POINT

This instrument is used to determine the lowest temperature at which a sample of Transformer oil will continue to flow when it is cooled under specified standard conditions.

Dissolved Gas Analysis (DGA)Transformer oil Lab

Interfacial Tension (IFT)Transformer oil Lab

Neutralization Number (Acidity) Transformer oil Lab

Sludge Transformer oil Lab

Dielectric Strength (BDV)Transformer oil Lab

Flash point Transformer oil Lab

Dielectric Dissipation Factor (Tan Delta)Transformer oil Lab

Moisture Content (PPM)Transformer oil Lab

Density Transformer oil Lab

Resistivity Transformer oil Lab

Appearance Transformer oil Lab

Furan Analysis Transformer oil Lab

Kinematic Viscosity Transformer oil Lab

Degree of Polymerisation Transformer oil Lab

Pour Point Transformer oil Lab

• Crude Oil Testing

• Lubricants Testing

• Fuel Testing

• Crude Oil Testing

• Petroleum Products Testing

• Petrochemical Testing

• Lubricant Oil Testing

• Bio Diesel Testing

• LPG and LNG Oil Testing

• Styrene Monomer Testing

• Caustic Soda Testing

• Alcohol Testing

• Phosphoric Acid Testing

• Sulphuric Testing

• Synthetic and mineral oils

• Engine oils

• Gas engine oils

• Hydraulic oils

• Transmission oils

• Gear oils

• Coolants

• Cutting fluids

• Water based oils

• Glycols emulsions

• Diesel fuel

• Bunker fuel and bio diesel

 

Oil analysis parameters

 

• Water Content

• Viscosity

• Total Acid Number or Total Base Number

• Insolubles

• Flash Point

• Fuel Content

• Presence of Glycol

• Soot

• Oxidation

• Nitration

• Sulphation

• Wear-Metal Elements

• Oil - Kinematic Viscosity

• Ash

• Density

• Moisture

• Grease - Drop Point

• Penetration

• Bitumen - Softening Point

• Penetration

• Ductility

• Insolubles

• Specific Gravity

• Purity

• Other Content

• Viscosity

• Calorific Value

• Water Molecule

• Moisture Content

• Loss On Drying

• Fire Point

• After Firing Property

• Colour Consistency After 24 Hours

• Insoluble Matter

• Ferrography

• Viscosity

• Flash point

• Fire point

• Cloud point

• Density

• Pour point

• Conardson carbon residue (CCR)

• Water & sediments

• Acid number (TAN)

• Base number (TBN)

• Neutralization value

• Sulphur content

• Distillation range

• Aniline point

• Cetane number

• Copper strip corrosion

• Wear metals - Ca, Mg, Na, K, Mo, Cu, Cr, Zn, P, Ba, B, Al, Pb, Mn, Ni, Si, V, Sn, Ag, Fe etc.

• Unknown Sample (Total Analysis with it's Name) & Etc

• Moisture and Volatile Matter

• Free Fatty Acid (FFA)

• Saponification Value

• Unsaponification Value

• Iodine Value

• Refractive Index

• Specific Gravity / Density

• Colour

• Hydroxyl Value / Acetyl Value

• Viscosity (Brookfield)

• Insoluble Impurities

• Acid Value

• Peroxide Value

• Flash Point

• Lecithin (as P and Phosphatide)

• Cloud Point

• Melting Point I Slip Point

• Titer

• Fatty Acid Composition

• Determination of carotene in vegetable oil

• Break Test

• Cold Test

• Conjugated Dienoic Acid

• Purity Tests

• Palm Oil Testing

• Palm kernel Oil Testing

• Sunflower Oil Testing

• Soybean Oil Testing

• Palmolein Oil Testing

• Palm fatty acid distillate Testing

• Palm stearin Testing

• cooking Oil Testing

• Mustard Oil Testing

• Groungnut Oil Testing

• Safflower Oil Testing

• sunflower Oil Testing

• sesamum Oil Testing

• Vegetable Oil Testing

• Fruits Testing

• Vegetable Testing

• Nuts Testing

• Egg Products Testing

• Marine Products Testing

• Sugar Testing

• Pulses Products Testing

• Soya Bean Meal Testing

• Animal Feed Testing

• Molasses Testing

• Cereals Testing

• Dry Fruit Testing

• Edible Oil Testing

• Rice Testing

• Wheat Testing

• Spice and Condiment Testing

• Beverages Testing

• Bakery and Confectionery Testing

• Meat and Poultry Testing

• Sea Food Testing

• Animal Feed Testing

• Milk Testing

• Baby Food Products Testing

• Salt Testing

• Nutritional Labelling

• Food Grade Sea Weed Testing

• Microbiological

• Chemical and Nutritional

• Pesticides and Agrochemicals

• Contaminants

• Vitamins and Additives

• Allergens

• Unparalleled Range of Tests

• Bakery and Confectionary Products

• Beverages (Alcoholic/Non-Alcoholic)

• Canned and Processed Foods

• Cereals,Pulses & Cereal Products

• Egg and Egg Products

• Fish and Marine Products

• Fruits & Vegetables and Related Products

• Herbs,Spices and Condiments

• Honey and Honey Products

• Health Foods

• Meat and Meat Products

• Milk and Diary Products

• Nut and Nut Products

• Nutraceutical Products

• Oil and Fats

• Poultry and Poultry Products

• Proprietary Foods

• Sugar and Sugar Products

• Tea,Coffee and Cocoa Products

• Aerobic Plate Count

• Total Coliforms

• Escherichia coli

• Salmonella

• Shigella

• Vibrio cholerae

• Vibrio parahaemolyticus

• Bacillus cereus

• Listeria monocytogenes

• Enterobacteriaceae

• Enumeration of Yeast and Mould

• Vibrio vulnificus

• Staphylococcus aureus

• Faecal Streptococci

• Thermotolerant Coliforms / Faecal Coliforms

• Clostridium perfringens (Anaerobic Sulphite Reducing Bacteria)

• Commercial sterility of Canned Foods

• Milk and Milk products Testing

• Meat and Meat Products Testing

• Egg and Egg Products Testing

• Fish and Fishery Products Testing

• Nuts and nut Products Testing

• Bakery and Confectioneries Testing

• Food Supplements Testing

• Coffee and Tea Testing

• Sugar and by - Products Testing

• Food Additives Testing

• Energy Drink and Beverages Testing

• Canned foods Testing

• Cereals and Pulses Testing

• Diet Foods Testing

• Frozen Foods Testing

• Ready to Eat Foods Testing

• Ready to Cook Foods Testing

• Fruits and Vegetables Testing

• Spices and Condiments Testing

• Oil and Ghee Testing

• Food Nutritional Facts Labeling Testing

• Food Additives Testing

• Food Aflatoxins and Myclotoxins Testing

• Food Agricultural Residues Testing

• Food Allergens Testing

• Food Amino Acids Profiles Testing

• Alanine Testing

• Arginine Testing

• Aspartic Acid Testing

• Glycine Testing

• Histidine Testing

• Leucine Testing

• Lysine Testing

• Proline Testing

• Serine Testing

• Tryptophan Testing

• Tyrosine Testing

• Valine Testing

• Food Anti-oxidants Testing

• Food Antibiotic Drug-Residue Contamination Testing

• Food Antibiotic drug-residue contamination Testing

• Food Aseptic Process Validation Testing

• Food Ash Testing

• Food Baking Trials Testing

• Food Caffeine Testing

• Food Calories Testing

• Food Carbohydrate Testing

• Food Chemistry Testing

• Food Colorants Testing

• Food Contamination Testing

• Food Dyes Testing

• Sudan Red Food Dyes 1-4 Testing

• Yellow Number 5 Dye Testing

• Food Enzymatic Testing

• Food FDA Compliance Testing

• Food Fats Testing

• Oils Testing

• Food Fatty Acids Testing

• Fatty Acid Profiles Testing

• Food Fragrances Testing

• Food GMO Content Testing

• Food Generally Recognized as Safe (GRAS Testing)

• Food Glycemic Index Testing

• Food Grains Testing

• Oilseeds Testing

• Food Headspace Gases Testing

• Food Headspace Volume Measurement Testing

• Food Lycopene Testing

• Food Mercury Content Testing

• Food Metabolic Studies Testing

• Food Microbiology Testing

• Food Microbial Aerobic Plate Count Testing

• Food Microbial Anaerobic Plate Count Testing

• Food Microbial Culture Identification Testing

• Food Microbial Fecal Coliforms Testing

• Food Gram Staining Testing

• Food Microbial Heat Resistant Mold Testing

• Food Microbial Lactic Acid Bacteria Testing

• Food Microbial Pathogen Screening Testing

• Food Escherichia Coli Testing

• Food Total Coliforms Testing

• Food Listeria Monocytogenes Testing

• Food Microbial Salmonella Testing

• Food Microbial Shigella Testing

• Food Microbial Lactobacillus Testing

• Cause of Spoilage Investigations Deformulation Testing

• Extraneous Materials Testing

• Failure Investigations Testing

• Food Acid Insoluble Ash Testing

• Food Microbial Pseudomonas Aeruginosa Testing

• Food Microbial Staphylococcus Aureus Testing

• Food Yeast and Mold Testing

• Food Microbial Bacillus Cereus Testing

• Food Minerals and Heavy Metals Testing

• Aluminum Testing

• Arsenic Testing

• Calcium Testing

• Chromium Testing

• Copper Testing

• Iron Testing

• Lead Testing

• Potassium Testing

• Sodium Testing

• Zinc Testing

• Food Moisture Testing

• Food Net Weight of Product Testing

• Food Nitrogen Testing

• Food Nutritional Labeling Testing

• Food Off-flavors Testing

• Food Off-odors Testing

• Food Organic Acid Profile Testing

• Food Packaging Baseweight Testing

• Food Packaging Extractables Testing

• Food Packaging Leachables Testing

• Headspace Leak Testing

• Migration Testing for Food Contact Surfaces (polymers Testing)

• adhesives Testing

• metals Testing

• lubricants Testing

• colorants Testing

• plastics Testing

• (papers) Seam Integrity Testing

• Seam Measurement Shelf-Life Determination Tin Coating Weight Testing

• Vacuum Food Thermal and non-thermal process efficacy Testing

• Food Pesticides Residue Testing

• Food Polyphenolics Testing

• Food Preservative Efficacy Testing

• Food Quality Testing

• Food Safety Testing

• Food Microbial Challenge Testing

• Food Thermal Death Time (TDT) Testing

• Food Sensory Evaluations Food Stability Studies and Expiration Dating Testing

• Food Accelearated Aging Stability Studies Testing

• Food Real Time Stability Studies Testing

• Food Sulfites Testing

• Food Total Dietary Fat Testing

• Food Toxin Testing

• Food Turbidity Testing

• Food Vitamins Testing

• Ascorbic Acid Testing

• VItamin C Testing

• Beta Carotene Testing

• Vitamin A Testing

• Vitamin B Testing

• Vitamin E Testing

• Food Water Activity Testing

• Food and Beverage Alcohol Content Testing

• Food and Fat Testing

• Food and Salt Testing

• Formulation Free Acid Testing

• Genetically Modified Organism GMO Testing of Seed Testing

• Grain Testing

• Geed and Food Heavy Metals Testing

• Juice Profiles Testing

• Meat and Poultry Testing

• BSE Testing

• Chemiacal Residues Testing

• Nutrients Testing

• Nutritional Labeling Testing

• Vitamins Testing

• Micronutrients Testing

• Milk and Dairy Testing

• Butterfat Content Testing

• Calcium Testing

• Dairy Test Methods Testing

• Dairy Test Methods Testing

• Lactose Testing

• Milk Sediment Testing

• Milk Vitamins Testing

• Milkfat Content Testing

• Raw Milk Quality Testing

• Solubility Index Testing

• Total Milk Solids Testing

• Milkfat Content Testing

• Protein Content Testing

• QC Food Ingredients Testing

• Thermophiles Testing

• Wine Testing

• Wine Acidity Testing

• Wine Alcoholic Content Testing

• Wine Antioxidant Testing

• Wine Color Testing

• Wine Oak Aroma Testing

• Wine Phenolics Testing

• Wine Reducing sugar Testing

• Wine Sediments and Particulates Testing

• Wine Sensory Analysis Testing

• Wine Sulfide Testing

• Wine Tartaric Acid Testing

• Wine Total Volume Testing

• Wine Turbidity Testing

• Wine Yeast Viability Testing

• Wine pH Testing

• Microscopic Examination Testing

• Ash Determination Testing

• Raw & White Sugar, Molasses & Alcohol

• Coffee, Tea, Cotton, Jute & Spices

• Oilseeds, Vegetable Oils

• Grains − Wheat, Rice, Sorghum, Corn, Pulses and Millets.

• Coal, Coke & Ores.

• Fertilizers, Cement & Bulk Chemicals.

• Scrap Metal, Pig Iron, Steel & Aluminium

• Crude Oils & Petroleum Products.

• Medicines & Pharmaceuticals

• Fluorspar and rock phosphate under minerals

• Industrial and Edible Salt

• Water and Beverages

• Fruits & Vegetables

Castor oil and products

• Industrial − Plant, Machinery, Projects,Pharmaceutical drugs & Inspection

• Cosmetics

• Microbiological testing for pathogens, Yeast and Mould and Plate count

• Pesticide residues in Food and Agricultural Products

• Heavy Metals

• Antibiotics in Food and Agricultural Products

• Spices and Condiments

• Animal Feed

• Food Additives and Food Colors

• Mycotoxins in Food and Agricultural

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