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LSY-3-10-127.jpg

China LSY-3-10/127 Three-Phase Integrated Current Transformer - Top Suppliers and Quality Factory Solutions

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In the power system industry, precise measurement and monitoring of current are vital for achieving operational efficiency and safety. Our three-phase integrated current transformer, manufactured in China, is a high-performance measurement device meticulously designed to fulfill these requirements. This innovative product consolidates multiple functions into a single device, making it an indispensable tool for electrical engineering professionals. As a leading supplier from a trusted factory, we ensure that our current transformer meets the highest industry standards, providing reliable performance for your power management needs.

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    Product Detail

    Model and its meaning

    LSY-3-10-127.jpg

    Summarize

    The LSY-3-10/127 features a three-phase integrated design, combining current measurement, protection, and switching functions into a compact device. This integration simplifies installation and wiring, significantly improving the overall reliability of the power system. By reducing the number of required components, the LSY-3-10/127 minimizes potential points of failure, thereby enhancing system robustness and lifespan.
    One of the most notable features of the LSY-3-10/127 is its high-precision measurement capability. This transformer is designed to accurately convert large current signals into easily manageable small current signals, thereby ensuring measurement accuracy in power systems. This accuracy is crucial for a wide range of applications, including power monitoring, protection, and control, as even minute deviations can lead to serious operational problems. Therefore, the LSY-3-10/127 is ideal for professionals seeking reliable and accurate current measurement in power systems.
    Durability is another key feature of the LSY-3-10/127. This three-phase integrated current transformer is manufactured using high-quality materials, exhibiting excellent corrosion resistance and high-temperature performance. These characteristics enable it to operate stably in harsh environmental conditions, making it suitable for a wide range of applications. Whether deployed in industrial or outdoor environments, the LSY-3-10/127 can withstand demanding operating conditions.
    The versatility of the LSY-3-10/127 is also reflected in its compatibility with 50Hz and 60Hz power systems. This adaptability allows the transformer to meet the standards of different countries and regions, making it a globally applicable solution. As power systems continue to evolve, the ability to adapt to different frequency standards is crucial for ensuring seamless integration and functionality across a wide range of applications.

    Technical parameter

    ✓ Rated frequency: 50Hz or 60Hz

    ✓ Rated secondary current: 5A or 1A

    ✓ Rated short-term thermal current: 40kA, 2 seconds

    ✓ Rated continuous thermal current: 1200%In

    ✓ Power factor of load: COC < P=0.8 (lag)

    ✓ Instrument security factor (measurement): FS < 10

    ✓ Accurate limit system (protection): 10P10, 10P15, 10P20

    Model

    Purpose

    Measure the
    current transformer

    Protect the
    current transformer

    Double-winding
    current transformer

    Stabilize
    the primary
    current

    Accuracy level and
    rated load（VA）

    Accuracy level and
    rated load（VA）

    Accuracy level and
    rated load（VA）

    0.2s

    0.2

    0.5

    10P5

    10P10

    10P15

    0.5

    1

    10P10

    10P5

    LSY-127

    75

    –

    –

    1

    –

    –

    –

    –

    1

    –

    –

    100

    –

    –

    2.5

    –

    –

    –

    –

    1

    –

    –

    150

    –

    –

    2.5

    2.5

    –

    –

    –

    1.5

    –

    –

    200

    –

    2.5

    2.5

    5

    –

    –

    –

    2.5

    –

    5

    300

    2.5

    2.5

    5

    5

    –

    –

    –

    2.5

    –

    5

    400

    5

    5

    5

    7.5

    –

    –

    –

    5

    –

    7.5

    500

    5

    5

    10

    10

    –

    –

    –

    5

    –

    10

    600

    5

    10

    10

    10

    –

    –

    –

    5

    –

    10

    800

    10

    10

    10

    10

    –

    –

    –

    5

    –

    10

    Frequently Asked Questions

    Q What is the LSY-3-10/127 and what is it used for?
    The LSY-3-10/127 is a three-phase integrated current transformer designed to combine current measurement, protection, and switching functions into a single compact device. It is widely used in power monitoring, protection relay systems, and industrial power control applications where accurate current measurement is essential.
    Q What rated frequencies does the LSY-3-10/127 support?
    The LSY-3-10/127 supports both 50Hz and 60Hz rated frequencies. This dual-frequency compatibility makes it suitable for use in power systems across different countries and regions worldwide, ensuring seamless integration regardless of local grid standards.
    Q What are the rated secondary current options for the LSY-3-10/127?
    The LSY-3-10/127 offers two rated secondary current options: 5A and 1A. These options allow users to select the most appropriate configuration based on their specific measurement equipment and system requirements, providing greater flexibility for different installation scenarios.
    Q How does the LSY-3-10/127 perform in harsh environmental conditions?
    The LSY-3-10/127 is manufactured using high-quality materials that provide excellent corrosion resistance and high-temperature performance. These properties allow the transformer to operate reliably in demanding industrial and outdoor environments, making it a durable and long-lasting solution for challenging conditions.
    Q What accuracy levels are available for the LSY-3-10/127?
    The LSY-3-10/127 supports multiple accuracy levels to meet different application needs. For measurement purposes, accuracy classes 0.2S, 0.2, and 0.5 are available. For protection applications, accuracy limit classes 10P5, 10P10, and 10P15 are supported. Double-winding configurations also support combined measurement and protection accuracy levels.
    Q What is the rated short-term thermal current of the LSY-3-10/127?
    The LSY-3-10/127 has a rated short-term thermal current of 40kA for 2 seconds, and a rated continuous thermal current of 1200%In. These specifications ensure that the transformer can safely withstand high fault currents without damage, making it reliable for use in demanding power protection systems.