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ABILKEEN LVB-220kV Oil-Immersed Inverted Type Outdoor Current Transformer Manufacturer Price

This type of current transformer is suitable for current and energy measurement and relay protection in 220kV, 50Hz power systems. This product is equipped with a metal expander, a fully sealed structure, and a primary winding with a "Urs" - shaped capacitive insulation structure. It has a low dielectric loss rate and low partial discharge. The secondary winding generally consists of 4-6 windings, which can be combined in any order. It can produce special purpose current transformers with an accuracy level of 0.2S according to user needs.

    Model and meaning

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    Product Overview

    The LB7-220 mutual inductor showcases an innovative design. Its core and windings are seamlessly combined via an advanced encapsulation technique, guaranteeing consistent and reliable performance. As a three-phase mutual inductor, it's expertly engineered for system-wide integration, making it ideal for complex electrical networks.​

    This model comes with triple secondary windings, each serving a specialized purpose. One winding is optimized for high-precision voltage measurement, enabling accurate monitoring of electrical parameters. Another winding is dedicated to power quality analysis, providing detailed data for grid optimization. The third winding is designed for rapid fault detection, ensuring swift response to safeguard the electrical system.​

    Crafted from high-purity cold-rolled silicon steel, the iron core of the LB7-220 offers excellent magnetic conductivity. This material choice minimizes energy losses and ensures stable operation, even under fluctuating load conditions.​Its robust construction and superior insulation materials endow it with high dust and moisture resistance, making it suitable for diverse environments, from industrial plants to outdoor substations. With a compact, lightweight, and fully enclosed design, installation is effortless, and its terminal box allows for flexible wiring, enhancing both usability and security.This type of current transformer is an outdoor device, and LB7-220 is suitable for areas below an altitude of 1700m. LB7-220W1 is suitable for polluted areas below an altitude of 1700m, with ambient temperatures ranging from -30 ℃ to+40 ℃. The appearance and installation dimensions are shown in the diagram.

    Technical Parameters

    Rated Current Ratio (Tapping Current Ratio) (A) Level Combination Accuracy Class Rated Output (VA) Accuracy Limit Factor Rated Short-time Thermal Current (kA) Rated Dynamic Current (kA) Rated Insulation Level (kA) Porcelain Bushing Creepage Distance (cm) Oil Weight and Total Weight (kg)
    Full turns tap
    2×600/5 (2×300/5)
    2×750/5 (2×400/5)
    2×800/5 (2×400/5)
    2×1000/5 (2×500/5)
    2×1200/5 (2×600/5)
    2×1250/5 (2×750/5)
    P1/P2/P1/0.5(0.2)
    P1/P2/P1/P1/0.5(0.2)
    P1/P2/P1/P1/P1/0.5(0.2)
    P1/P2/P1/P1/0.5/0.2
    P1/P2/P1/P1/0.2S
    P1/P2/P1/P1/P1/0.2S
    5P 10P 50 20 (5s)
    21 - 42 (or)
    (3s) or 31.5 - 63
    55 - 110 or (or)
    80 - 160
    252/395/950 410 365/1300
    5P 10P 50 25
    50 12.5
    0.5 50 40 550
    0.2 50 40(0.5 class)
    0.2S  50 40(0.5 class) 630

    Appearance and installation dimensions

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