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DIN 36kV250 Transformer Bushing Insulator CD990mm
High Voltage Transformer Bushing
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DIN 36kV250 Transformer Bushing Insulator CD990mm

The HV series with the widest range of available designs and customizations. This bushing type is widely used for insulating power transformers on the low-voltage side in both indoor and outdoor applications. The HV series are solid porcelain liquid filled (hollow core oil communicating) designed in accordance with the standards EN 50180 and EN 50243 (formerly DIN 42531-2-3-4 & 42541). Transformer oil fills the space between the conductor (a rigid cylindrical copper stem) and the porcelain, increasing the electrical insulation and dissipating the thermal energy generated by the high current. Featuring an extensive range of available customizations, the HV bushing can be manufactured according to almost any kind of customer requirement (i.e. rod extension, special connectors, special finish surface, etc.) Designed for both indoor and outdoor applications, the HV bushing series can even operate under extreme environmental conditions (i.e. very polluted areas, very cold/hot ambient temperatures, very corrosive/aggressive environments, etc.).

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    size

    H=550mm
    D=192mm
    Rated Voltage: 36KV
    Rated Current: 250A
    Creepage Distance: Min 990mm
    Power Frequency Withstand Voltage Dry: 80KV
    Lighting Impulse Withstand Voltage: 170KV
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    product description

    This is an outdoor transformer bushing insulator designed for use on oil-filled distribution or small power transformers operating in electrical systems with a nominal voltage up to 30kV or 33kV (maximum 36kV). It allows a conductor carrying up to 250A to pass safely through the grounded transformer tank wall while providing robust electrical insulation. 

    Material
    Typically manufactured from high-quality electrical porcelain (usually brown glazed) 

    Construction
    It features a central conductor, the main insulating body with weather sheds (skirts) designed to maximize the creepage distance and disrupt water flow, a mounting flange for secure attachment and grounding to the transformer tank, and terminals for connecting the internal transformer winding lead and the external power line/cable. 

    Application
    Suitable for outdoor substations or pole-mounted transformers where environmental factors like rain, humidity, and pollution are present. The specified 990mm creepage distance indicates it's designed for environments requiring enhanced insulation integrity compared to bushings with shorter creepage distances. 

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