後藤 零

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Viewing 11 posts - 31 through 41 (of 41 total)
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  • in reply to: How does Midel 7131 perform as an insulating fluid? #122813
    後藤 零
    Member

    Midel 7131 synthetic ester performs exceptionally well as an insulating fluid, offering high dielectric strength, excellent thermal stability, and effective cooling capabilities. It is also resistant to oxidation and moisture ingress, maintaining its insulating properties even in humid or wet conditions. This makes it a reliable choice for high-performance transformers.

    後藤 零
    Member

    The most effective Diesel Fuel Treatment methods for improving fuel quality include water separation, filtration, and additive application. Water Separation involves removing moisture from diesel fuel using devices like water separators or fuel dryers, preventing corrosion and microbial growth. Filtration employs high-efficiency filters to capture particulate matter, dirt, and contaminants, ensuring clean fuel delivery to the engine. Additive Application enhances fuel properties by incorporating anti-oxidants, detergents, lubricity agents, and cetane improvers, which stabilize the fuel, improve combustion efficiency, and reduce engine wear. Biocide Treatment is also effective in eliminating microbial contamination, maintaining fuel hygiene. Fuel Polishing Systems continuously clean and condition the fuel, providing ongoing purification. Combining these methods ensures comprehensive improvement in diesel fuel quality, leading to enhanced engine performance, reduced maintenance costs, and extended engine life.

    後藤 零
    Member

    Design considerations include:

    Capacity Matching: Ensuring the system can handle the volume of oil in the cable network.
    Technology Selection: Choosing appropriate purification techniques based on contamination types.
    Automation Level: Incorporating control systems for efficient and safe operation.
    Modularity: Designing for scalability and ease of maintenance.
    Energy Efficiency: Utilizing components that minimize power consumption.
    Material Compatibility: Selecting materials resistant to the specific oil and contaminants.
    Safety Features: Integrating alarms, emergency shutdowns, and compliance with safety standards.
    A well-designed system maximizes purification effectiveness while minimizing operational costs and risks.

    in reply to: How can oil be purified from water and impurities? #121774
    後藤 零
    Member

    Purification methods include:

    Vacuum Dehydration: Evaporating water under low pressure.
    Centrifugation: Separating water and impurities by density.
    Coalescing Filters: Aggregating water droplets for separation.
    Adsorption: Removing dissolved water and impurities using absorbent materials.
    Filtration: Eliminating solid particles with fine filters.
    Combining these methods effectively restores oil purity.

    in reply to: What specific transformers are used in high-speed trains? #121723
    後藤 零
    Member

    High-speed trains use specialized traction transformers that are compact, lightweight, and capable of handling high power levels with excellent efficiency. They often employ advanced materials like aluminum windings and composite insulation to reduce weight. Enhanced cooling systems, such as forced air or oil cooling with heat exchangers, manage the substantial heat generated. The transformers must tolerate high mechanical stresses from rapid acceleration and deceleration. Designs may be modular for easier maintenance and integrated with other onboard electrical systems for optimal performance.

    後藤 零
    Member

    Metal Particles: Generated during machining.
    Tramp Oils: Leaked lubricants from machine components.
    Microbial Growth: Bacteria and fungi introduced through water or air.
    Dirt and Debris: External contaminants entering the system.
    Water Hardness Minerals: Minerals from the water supply affecting water-based fluids.
    Prevention:

    Effective Filtration: Regularly filter the cutting oil to remove particulates.
    Tramp Oil Skimming: Use skimmers to remove floating oils.
    System Sealing: Ensure equipment is well-maintained to prevent leaks.
    Water Treatment: Use deionized or softened water for dilutions.
    Microbial Control: Implement biocides and maintain appropriate pH levels.
    Good Housekeeping: Keep the work area clean and covered when not in use.
    Implementing these measures maintains fluid integrity and prolongs its effective use.

    in reply to: What is a transformer turns ratio tester used for? #119976
    後藤 零
    Member

    A transformer turns ratio tester is an essential device used for evaluating the turns ratio of transformers, which is crucial for assessing their operational integrity. It measures the ratio of the primary winding voltage to the secondary winding voltage and can identify issues like improper connections or faults within the transformer. Using this tester helps in preventive maintenance, ensuring transformers operate efficiently and safely. Regular testing with a transformer turns ratio tester can help in diagnosing potential problems before they lead to transformer failures, thus enhancing reliability in industrial applications. This equipment is vital in the broader context of diagnostic tools like the transformer megger test, ensuring the longevity and optimal performance of transformers and associated electrical equipment.

    in reply to: How to make potassium humate from lignite coal? #119639
    後藤 零
    Member

    To make potassium humate from lignite coal:

    Crush the Coal: Start by crushing the lignite coal into a fine powder to increase surface area for extraction.
    Alkaline Extraction: Add potassium hydroxide (KOH) to the powdered lignite coal in a large container. The alkali dissolves the humic and fulvic acids present in the coal, producing a potassium-rich solution.
    Stirring and Heating: Heat and stir the mixture to speed up the reaction and extract more humic acid from the coal.
    Filtration: After sufficient extraction, filter the mixture to separate the humic acid solution from the solid residue.
    Neutralization: Neutralize the solution to stabilize the potassium humate, making it safe for agricultural use.
    Drying (Optional): The potassium humate solution can be concentrated and dried to produce powder or granules.
    This process allows for the efficient production of potassium humate from lignite coal.

    in reply to: What is the BDV test of transformer oil? #118918
    後藤 零
    Member

    The BDV test of transformer oil, also known as breakdown voltage testing, is a crucial diagnostic procedure used to assess the electrical insulating properties of transformer oil. This test measures the voltage at which the oil breaks down and conducts electricity, indicating its ability to insulate electrical components in transformers. A high BDV value suggests good insulation quality, while a low value may indicate contamination or deterioration of the oil. Globecore offers advanced testers specifically designed for conducting BDV tests, which provide accurate and reliable measurements to ensure the safe and efficient operation of transformers. Regular BDV testing is essential for maintaining transformer reliability and preventing electrical failures.

    in reply to: What is the dielectric strength test of transformer oil? #118903
    後藤 零
    Member

    The dielectric strength test of transformer oil measures the oil’s ability to withstand electrical stress without breaking down. This test is crucial in assessing the quality and suitability of transformer oil for electrical insulation purposes. The test involves applying a gradually increasing voltage to a sample of the oil until it fails and conducts electricity, indicating the breakdown point. A higher dielectric strength denotes better insulating properties, which is essential for the safe operation of electrical transformers. Globecore offers advanced testers specifically designed for evaluating the dielectric strength of transformer oil, providing accurate and reliable results. When considering a dielectric strength testing solution, it’s essential to check the transformer oil bdv test kit price in India to ensure you choose the right equipment that matches your budget and operational needs.

    in reply to: What does a BDV testing kit include? #118815
    後藤 零
    Member

    A BDV testing kit typically includes a high-voltage tester designed to measure the breakdown voltage of industrial oils. It generally consists of components such as an oil sample container, electrodes for conducting the test, a power supply unit to generate high voltage, and a readout device or digital display to show the breakdown voltage results. Additionally, safety equipment such as protective gloves and eyewear may be included to ensure safe handling during the testing process. Accurate BDV testing is crucial for determining the insulating properties of oils, making a reliable kit essential for effective assessment.

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