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Horizontal manual cage tap changer neutral point voltage regulation

De-energized manual cage tap changer

Horizontal manual cage tap changer neutral point voltage regulation

This series comprises vertical and horizontal types, specifically designed for three-phase and single-phase oil-immersed power transformers with frequencies of 50Hz and 60Hz. It is suitable for transformers with a maximum equipment voltage and a rated current ranging from 63A to 1200A. The tap-changer can be directly mounted on the transformer tank cover or wall, enabling de-energized tap changes and replacements.

    Model Meaning



    1. It can be utilized in all de-energized transformers, showcasing its wide applicability. 
    2. With its outstanding short-circuit resistance, this product guarantees optimal performance.


    Connecting method Neutral point voltage regulation
    Rated current 63A-1200A
    Rated voltage 10kV、35kV

    Our horizontal manual cage tap changer neutral point voltage regulation is an important tool for power companies, industrial facilities and commercial buildings that rely on a consistently reliable supply of power. With its advanced design and functionality, this product is able to adjust the neutral point voltage to meet the specific requirements of different loads and improve the overall performance of the power distribution system.

    Key features of our horizontal manual cage tap-changer neutral point voltage regulation include a user-friendly manual control mechanism that allows the operator to quickly and accurately adjust the neutral point voltage. This ensures that the grid remains within safe operating parameters and minimizes the risk of voltage fluctuations that can lead to power quality issues and equipment failure.

    Additionally, our products are designed to withstand the harsh operating conditions commonly found in power distribution environments, using rugged construction and high-quality materials to ensure long-term reliability and performance. It also has a compact, horizontal design that can be easily installed and integrated into existing power distribution systems without taking up unnecessary space.

    Our horizontal manual cage tap changer neutral point voltage regulation is also equipped with advanced safety features to protect the operator and ensure compliance with industry standards and regulations. This includes comprehensive insulation and grounding protection, as well as an intuitive control interface that minimizes the risk of human error during operation.

    Overall, our horizontal manual cage tap changer neutral point voltage regulation is a game changer in power distribution technology, providing unparalleled control, reliability and safety to grids of all sizes and complexities. With this product, users can effectively manage neutral voltage and optimize distribution system performance with confidence and ease.

    Voltage Regulation Principle




    Type Rated voltage  kV Install measurement mm Frequency withstand level(kV/1min)
    L L1 L2 H A B Tank cover opening holeΦD To ground Between phase Between contacts
    WSLⅢ125/10-3×3 W 10 365 130 65 200 176 200 Φ43 42 10 18
    WSLⅢ250/10-3×3 W 385 135 70 205 185 215
    WSLⅢ400/10-3×3 W 500 167.5 95 220 205 240
    WSLⅢ630/10-3×3 W 515 165 105 225 215 240
    WSLⅢ125/10-5×5 W 365 130 65 200 242 260
    WSLⅢ250/10-5×5 W 385 135 70 205 250 280
    WSLⅢ400/10-5×5 W 500 167.5 95 220 275 300
    WSLⅢ630/10-5×5 W 515 165 105 225 288 320
    WSLⅢ400/10-7×7 W 500 167.5 95 220 275 300
    WSLⅢ125/35-9×9 W 35 641 203 130 235 310 360 Φ60+1 95 35 30
    WSLⅢ250/35-9×9 W 641 203 130 240 320 360
    WSLⅢ400/35-9×9 W 661 205 138 275 385 430

    10~35kvtap changer H1=37mm;66kV tap changer H1=20mm
    Connecting block Md:125A Md=M8;250A Md=M10;  400A Md=M16;630A Md=M18
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