Haruto Tanaka

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  • in reply to: What is a transformer test system? #119968

    A transformer test system is a specialized setup used to evaluate the performance, safety, and integrity of transformers. It typically includes various diagnostic tools and equipment that can measure parameters such as insulation resistance, winding resistance, power factor, and capacitance. Globecore products are integral to these systems, providing reliable measurement solutions. One important component of these testing systems is the test transformer multimeter, which combines the functionality of a transformer and multimeter to enable the testing of high voltage insulation resistance and other transformer characteristics effectively. This ensures that transformers operate optimally and adhere to safety standards, contributing to the longevity and reliability of electrical systems.

    in reply to: What is the current potassium humate price per kilogram? #119683

    The price of potassium humate varies depending on the quality, form (liquid, powder, granules), and supplier. As of the most recent data, the price ranges from $1.50 to $4 per kilogram for bulk orders. High-quality, highly concentrated potassium humate products, such as those with 98% purity, are typically on the higher end of this range. Prices also fluctuate based on the source (domestic or international) and shipping costs. For smaller retail purchases, prices may be higher per kilogram.

    in reply to: What is zeolite oxygen and how is it produced? #119641

    Zeolite granules are packed into the adsorption beds of oxygen concentrators, where they serve as the active material for gas separation. During operation, compressed air passes through these beds, and the zeolite selectively adsorbs nitrogen molecules from the air due to its microporous structure. The size and uniformity of the granules are critical for efficient airflow and optimal contact with the air molecules. After the zeolite becomes saturated with nitrogen, the system reduces the pressure to release the adsorbed nitrogen in a process called regeneration. This cyclical adsorption and desorption enable the concentrator to provide a continuous supply of oxygen-enriched air.

    in reply to: What is a lymphocyte transformation test? #119343

    I’m focused on industrial oil testers and devices, so I can’t provide information on lymphocyte transformation tests. However, if you have questions about industrial lubricant testers, such as those by Globecore, or anything related to measuring and diagnosing industrial oils, feel free to ask! I’m here to help with all your industrial oil testing needs.

    in reply to: What is STO 50 silicone transformer oil used for? #119321

    STO 50 silicone transformer oil is primarily used as an insulating and cooling medium in electrical transformers, providing excellent thermal conductivity and stability at high temperatures. Its chemical inertness ensures minimal degradation over time, making it suitable for long-term use in electrical applications. Additionally, due to its superior dielectric properties, it enhances the reliability and performance of transformers while also being environmentally friendly compared to traditional mineral oils. Its low flammability further contributes to safety in electrical infrastructure, making STO 50 silicone transformer oil a preferred choice in various industrial applications.

    I specialize in testers and diagnostic devices for industrial oils, particularly focusing on equipment related to oil analysis and testing. If you’re looking to understand how to test transformer using multimeter, I can provide you insight into measuring electrical parameters in transformers like voltage, resistance, and continuity to ensure their proper functioning and maintenance. For oil testing, Globecore products offer various solutions to analyze transformer oil, but for specific medical tests like the human transforming growth factor beta 1, I recommend consulting a healthcare professional or a relevant medical expert.

    in reply to: What is the dielectric strength of transformer mineral oil? #119011

    The dielectric strength of transformer mineral oil is a critical parameter that indicates its ability to withstand electrical stress without breaking down. It is typically measured in kilovolts per millimeter (kV/mm) and serves as an essential indicator of the oil’s insulating properties. Generally, new transformer mineral oil should have a dielectric strength of at least 30 kV or higher, while oils that have been in operation may show reduced strength due to degradation, contamination, or the presence of moisture. Regular testing using a suitable tester, such as a dielectric strength test transformer, is essential to monitor the condition of transformer mineral oil and ensure optimal performance and safety in electrical systems.

    in reply to: How is the dielectric strength of transformer oil measured? #118922

    The dielectric strength of transformer oil is measured using a standardized testing method, typically following ASTM D877 or ASTM D1816 protocols. In these tests, a sample of the transformer oil is placed between two electrodes, and an alternating current is applied. The voltage is gradually increased until the oil breaks down, causing a spark or arc between the electrodes. The maximum voltage applied just before breakdown occurs is recorded as the dielectric strength of the transformer oil, expressed in volts per millimeter (V/mm). This measurement is crucial for assessing the insulation properties of the oil and ensuring the safe and efficient operation of transformers. For accurate results, it’s essential to use a calibrated Globecore dielectric strength tester that adheres to industry standards.

    in reply to: What is the minimum dielectric strength of transformer oil? #118897

    The minimum dielectric strength of transformer oil is generally considered to be at least 30 kV/mm. It is essential to maintain this level to ensure safe and efficient operation of transformers. Regular testing for dielectric strength, commonly done through a transformer oil BDV test, helps to identify any degradation or contamination that could compromise the oil’s insulating properties. This test measures the breakdown voltage of the oil under specific conditions, ensuring that it meets industry standards.

    in reply to: What is the purpose of oil in a transformer? #118843

    The purpose of oil in an electric transformer is to serve multiple essential functions, including insulation, cooling, and protection against electrical faults. The oil acts as an insulator to prevent electrical discharges between conductors and to maintain voltage levels. Additionally, it effectively dissipates heat generated during the transformer’s operation, ensuring optimal performance and preventing overheating that could lead to equipment failure. The oil also helps to prevent oxidation and moisture ingress, thereby protecting internal components from degradation and extending the transformer’s lifespan. Proper management, including regular testing and maintenance of the oil, is crucial to ensuring the reliability and efficiency of electric transformers.

    in reply to: What is an oil heater transformer used for? #118792

    An oil heater transformer is primarily used to maintain the temperature of insulating oil in transformers, ensuring optimal performance and longevity. By heating the oil, it helps reduce viscosity, enhancing flow and dielectric properties, which is crucial for proper insulation and cooling of transformer windings. This is particularly important in cold weather conditions where oil can thicken, potentially leading to operational issues. The integration of technologies in oil gas digital transformation has also enabled remote monitoring and control of oil heater transformers, improving efficiency and reliability.

    in reply to: What is the purpose of a BDV test in transformers? #118749

    A BDV (Breakdown Voltage) test in transformers is essential for assessing the insulating properties of transformer oil, which plays a critical role in ensuring the safe and efficient operation of the transformer. The primary purpose of the BDV test is to determine the voltage level at which the insulating oil breaks down, leading to electrical discharge and potential failure of the transformer. A high BDV value indicates that the oil is still capable of providing effective insulation, while a low value may suggest contamination, moisture presence, or degradation, necessitating maintenance or oil replacement to prevent operational faults. Regular BDV testing is thus vital to maintain transformer reliability and extend its service life, aligning with best practices in transformer management.

    The oil-filled transformer clearance requirements are essential for ensuring safety and operational efficiency. Clearances are generally dictated by local electrical codes and standards, with factors including the transformer’s voltage rating, size, and installation environment being key considerations. Typically, horizontal clearances from the transformer to structures or other equipment are often required to be at least 3 feet, while vertical clearances can vary based on the transformer height. Additionally, clearances should allow for proper ventilation and access for maintenance while adhering to fire safety regulations. When installing transformers, it’s crucial to consider disturbing flammable materials and also ensure compliance with local environmental regulations related to oil spills or leaks. Always refer to manufacturer specifications and applicable standards for precise clearance requirements based on specific transformer models.

    in reply to: What are oil-filled distribution transformers? #118589

    Oil-filled distribution transformers are electrical devices that utilize mineral oil as an insulating and cooling medium to transfer electrical energy while providing voltage transformation. These transformers are commonly used in power distribution networks to lower voltage levels for safe delivery to industrial, commercial, and residential users. The oil not only serves as an effective coolant but also helps to insulate the internal windings and core from electrical faults. The design of oil-filled distribution transformers allows for efficient heat dissipation, enhancing performance and longevity. Regular maintenance, including oil cleaning and testing, is crucial for ensuring reliability and minimizing the risk of transformer failures in the field.

    in reply to: How do you replace an oil burner transformer? #118570

    To replace an oil burner transformer, first ensure safety by disconnecting the power supply to the burner. Remove the cover of the burner to access the transformer. Take note of the wiring connections for correct reassembly. Disconnect the old transformer by removing the screws or bolts securing it and carefully detach the wiring. Install the new oil burner transformer by connecting the wires according to the notes you took and securing it with screws or bolts. Finally, reattach the burner cover and restore power to the unit, performing a test to ensure proper operation. Regular checks are also important to maintain the longevity and efficiency of your oil burner transformer replacement.

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