viscosity of transformer oil in cst

The fluid of claim 3 wherein the antioxidant produces an electrically-insulating fluid having a kinematic viscosity in the range of 20-40 cSt as desired at 40° C. and the antioxidant is a free radical scavenger. The viscosity is the Kinematic viscosity is measured in centistokes cSt (or mm2/s). It is shown that the degradation rate of oils represented by kinematic viscosity is changed according to ester rate under thermal stress. Additional information is available upon request. The ability to flow is most often selected by the Society of Automotive Engineers (SAE) numbers. GST No. An oil that is 9.2 cSt will be nearly the same viscosity as an oil that is 9.3 cSt, yet one is an SAE 20 and the other is an SAE 30. The oil used in the transformer is a key element to check the physical condition of the unit. manufactured in the viscosity range from 0.65 cps to 60000 cps, can be easily converted into emulsion by using non ionic emulsifiers. Enjoy. Generally the viscosity of lubricants means the kinematic viscosity expressed in cSt and the viscosity expressed in units other than cSt is as follows: ① cSt (Kinematic Viscosity) Strokes refer to the kinematic viscosity expressed in C. G. S and one hundredth of it is expressed in centistroke (cSt). Transformer Oil Polishing Unit-TPU. Viscosity of insulating liquid affects the ability to transfer heat by conduction. Sae-5 oil 100cSt. Manufacturer of Industrial Oil - Transformer Oil, Defoamer Oil, Chain Oil offered by D R P Silicone, Mumbai, Maharashtra. The fluid should be tested in six months to determine if additional work is needed. 27CHDPP3712N1Z1. Explosive under the influence of a flame Not considered to be explosive. Viscosity Comparison Chart Viscosity Comparison Chart for Silicones Below is a reference for the viscosities of silicones to common fluids. AD03 looks like sand after complete life as it would be volatile hydrocarbon free. Oil viscosity is graded by measuring the time it takes for a standard amount of oil to flow. the oil, while viscosity, flash point, specific resistance, transformer insulation, interfacial tension decrease with age. In the SI the unit is m²/s. Approx. The numbers are commonly assigned in ranges of 5, 10, 20, 30, 40, and 50. A gear lubricant and an engine oil having the same viscosity will have widely different SAE grade designation as defined in the two classifications. The normal operating temperature viscosity for a 30 grade oil needs to have a viscosity range on the SAE chart of between 9.3 and 12.5 centistokes – at 100°C. Sae-10 motor oil 350cSt. Call 08048762045 87% Response Rate. Low viscosity of the transformer oil is an advantage for heat dissipation. The tests results allow to make a comparison between the different mixtures proposed and to select the best. kerosene 20cSt. Description. We offer the transformer oil in barrels, flexi bags & … : 3.0 12.0 Pour Point, oC. Physical properties • Viscosity. It consists of a series of 18 viscosity brackets between 1.98 mm2/s and 1650 mm2/s, each of which is defined by a number. 6. Oxidising properties . Not applicable . Viscosity 9.2 cSt @ 40°C Explosive properties Not considered to be explosive. These fluids are used as Release agent & Lubricant in variety of applications. Table One Typical Properties of Dielectric Fluids Conventional Property Transformer Oil Beta Fluid Viscosity, cSt. Absolute, Dynamic and Kinematic Viscosity - Dynamic, absolute and kinematic viscosities - convert between CentiStokes (cSt), centipoises (cP), Saybolt Universal Seconds (SSU) and degree Engler Crude oil viscosity as function of gravity - Viscosity at 20°C/68°F and 50°C/122°F for more than 120 crudes is shown as function of specific gravity@15°C/60°F Product Brochure. The viscosity is typically reported in centistokes (cSt), equivalent to mm2/s in SI units, and is calculated from the time it takes oil to flow from the starting point to the stopping point using a calibration constant supplied for each tube. These properties are physical, electrical, and chemical properties. Irving Transformer Oil These oils have desirable aquatic toxicity and carcinogenicity characteristics. Oxidising properties The mixture itself has not been tested but none of the ingredient substances meet the criteria for classification as oxidising. D R P Silicone. Motor oil viscosity is a common term we need to understand completely, and it refers to the ability of an oil to flow. Using the Kinematic Viscosity … Sae-20 motor oil 500cSt. water 10cSt. Why one should use Transformer Oil IEC 60296 21011 Specifications. You'll see the ranges for cSt compared to SAE numbers. The Viscosity Index Test (ASTM D 2270) is based on the Kinematic viscosity of the oil at 40°C (104°F) and 100°C (212°F). Kinematic (40°C): 0,096cm²/s (9,6 cSt) Evaporation rate . Oil has three different basic properties that identify the suitability of the oil for the purpose of insulation and cooling. Measuring the Viscosity of Transformer and Insulation Oil. Last modified: 2012/06/03 by dmitri_kopeliovich Except where otherwise noted, this work is licensed under a Creative Commons Attribution-Noncommercial-Share … The numbers indicate to the nearest whole number, the mid points of their corresponding brackets. 9.2. is an electrical insulating naphthenic oil that meets the ASTM D-3487 specification for inhibited oils. Silicone oil. The fluid of claim 1 wherein the base oil is winterized. Types of oils to study 2.3.1. Irving Transformer Oil. It’s up to you to decide if the info is applicable to your operating conditions. Irving Transformer Oil . Adsorbent based multi cycle regeneration Machine; Adsorbent can be used for more than 200 times by In-Situ reactivation ; BEST transformer oil reclamation without Clay. Alpha-1 Fluid's low viscosity will minimize the temperature rise associated with the retrofill. Get Best Quote. SEND EMAIL. Reference Object 1 to 5cSt. The mineral-based oil like transformer oil is frequently used in different types of transformers for its dielectric strength as well as electrical properties. Viscosity index numbers above 95 are considered high. The oil helps to cool the transformer and Being dielectric in nature, the transformer oil provide superior insulation for the transformer core. Name Method Units Insulating Oil Product Code 33165 Viscosity @ -15°C ISO 3104 cSt 400 Viscosity @ 40°C ISO 3104 cSt 9 Closed Flash Point ISO 2719 °C 140 Pour Point ISO 3016 °C -57 Density @ 20°C ISO 3675 g/ml 0.879 Neutralisation value IEC 62021-1 mgKOH/g … Transformer oil that leaches from the paper and wood in the unit will mix with the Beta Fluid, possibly lowering the fire point. Dahisar East, Mumbai, Maharashtra. Automotive Lubricant Viscosity Grades Gear Oils – Except SAE J 306, 1998 SAE VISCOSITY GRADE ASTM D2983 TEMPERATURE oC FOR VISCOSITY OF 150000mPa.S(1) ASTM D445(mm2/s) VISCOSITY AT 100oC MAX MIN2 MAX 70W -553 4.1 - 75W -40 … @ 100oC. This is why the cSt centistokes numbers more accurately show oil viscosity. Transformer Fluids; APPLICATIONS; RESOURCES ; BASE OILS. A representative sample of the oil shall be examined in 100 mm thick layer at 27°C The oil shall be clear and transparent & free from suspended matter or sediment Transparent, clear and light: Density @ 29.5°C: IS : 1448 (P-16)-0.89: 0.840 g/cm 3: Kinematic Viscosity @ 27°C, cSt: IS : 1448 (P-25)-27: 12.4 cSt 2.3. filled with a fire resistant oil. Group II Base Oils have lower sulfur and higher saturates compared to Group I Base Oils. Not applicable . 2.1.2.2. Check ASTM D 2161 "Standard Practice for Conversion of Kinematic Viscosity to Saybolt Universal Viscosity or to Saybolt Furol Viscosity" 2) Water at 68.4 o F (20.2 o C) has an absolute viscosity of one - 1 - centiPoise. Its symbol is St. 1 St = 100 cSt or 1 cSt = 10⁻⁶ m²/s. The table at the right, SAE Viscosity Chart (High Temp), shows the equivalents for cSt and SAE viscosity numbers. TrustSEAL Verified. Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. DMSO extractable compounds for base oil substance(s) according to IP346 For oils with the same specific gravity, we would opt for the lower viscosity. Download PDF Copy; Request Quote; Written by AZoM Sep 20 2016. To confirm these properties, the tests performed on the transformer oil can also be divided into three different categories. 7. In India, transformer oil is tested on the basis of IS 335. Price: Rs 150 / Kilogram Get Latest Price. Explosive properties . Conduction cooling is major heat removal mechanisms in transformers and higher viscosity would be expected to result in higher hot spot temperatures within the transformer. However, the commonly used measure is the stokes (or stoke) where 1 St = 10⁻⁴ m²/s. Viscosity cSt. Generally the viscosity of lubricants means the kinematic viscosity expressed in cSt and the viscosity expressed in units other than cSt is as follows: ① cSt (Kinematic Viscosity) Strokes refer to the kinematic viscosity expressed in C. G. S and one hundredth of it is expressed in centistroke (cSt). Viscosity mm²/s. 1) The Saybolt Universal SUS viscosity equivalent (SSU or SUS) to a given kinematic viscosity varies with the temperature at which the determination is made. Water at 20 °C has a kinematic viscosity of about 1 cSt. Measurements of the viscosity of the oils studied are carried out using a viscometer and expressed in square meters per second (m 2 /s) or in centistokes (cSt). Oil with a viscosity that does not change much between 40°C and100°C will have a higher VI than an oil with a greater change in viscosity. The ISO viscosity classification uses mm2/s (cSt) units and relates to viscosity at 40oC. In the last five decades in India, there is a drastic change in production technology. The respective increase or decrease are detrimental to the transformer Refer below test report. Hydrotreated paraffinic base oils with viscosities from 2 cSt to 12 cSt and hydroisomerized hydrogenated paraffinic hydrocarbon ranging in viscosity from 2 cSt to 8 cSt at 100 C. Advantages. The comparisons are not exact and should only be used as a general guide. transformer oil 50cSt. Oils with a high VI Vapour density . New oils Not applicable . In engineering, centistokes (cSt) are usually used. Typically, a transformer designed for conventional oil will run 2 - 5 oC. Residual Transformer Oil: A successful retrofill job depends on removing as much of the original fill fluid as possible. The ideal oil would have a specific gravity in the upper portion (> .83) of the range specified under "required properties" and a viscosity between 12 cST at 40 o C (70 SUS at 100 o F) and 18 cSt at 40 o C (100 SUS at 100 o F). The stability study of thermal aging is an essential tool to estimate the lifetime of insulating oil and therefore for the transformer. The viscosity is the Dynamic viscosity and it is measured in centipoise cP. The fluid of claim 1 wherein the oleic acid content of the oil is about 30% or greater. None . 5. warmer after being retrofilled with Alpha-1 Fluid. Also, you don't have to wait until -40 C to see that the viscosity of a 5W30 is much less than a 15W40 even at say 0 degrees C. Keep in mind the units are in cSt, the same units as your viscosity at 100 C where the viscosity runs from 8 to 16 cST depending on which oil you use. 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