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LDBJ9-40.5.jpg

High-Performance LDBJ9-40.5 Current Transformer from China Suppliers and Factory for Power Systems

The LZZBJ9-40.5 type current transformer is a high-performance device tailored for power systems, making it an ideal choice for power grids operating at a rated frequency of 50Hz or 60Hz and a rated voltage of 40.5kV. This advanced transformer is designed to provide accurate energy metering, precise current measurement, and reliable relay protection. It demonstrates exceptional stability and performance across various complex power environments, Manufactured in China, this current transformer meets the stringent execution standards of GB20840.1-2010 and GB20840.2-2014, ensuring top-quality and reliability. As a leading supplier and factory in the industry, we are committed to delivering high-quality current transformers that meet your power system needs
    Preview Data Contact us
    Outline and Installation Dimension Drawing

    Model and its meaning

    LDBJ9-40.5.jpg

    Summarize

    ⚡
    In electricity metering, the LZZBJ9-40.5 current transformer can accurately measure current, providing reliable data support for power companies' billing and load management. Its high-precision measurement capability ensures the accuracy of electricity metering and helps users make rational use of electricity resources.
    📡
    In terms of current measurement, this instrument uses current transformers to monitor current changes in real time and provide timely feedback on the operating status of the power system. This effectively prevents faults such as overload and short circuits, ensuring the safe and reliable operation of power equipment.
    🛡️
    The LZZBJ9-40.5 type current transformer plays an important role in relay protection. It provides the necessary current signal to the protection device, ensuring the protection device can quickly cut off the power supply in the event of a fault, preventing equipment damage and personal injury accidents.
    🔧
    With its excellent performance and versatility, the LZZBJ9-40.5 type current transformer has become an indispensable component of modern power systems, providing strong support for the safe, stable and efficient operation of power systems.

    Normal Service Condition

    🏠 Installation site: Indoor.
    🌡️ Ambient temperature: Up to 40℃  |  Minimum temperature: -5℃
    📅 Daily average temperature: Does not exceed 30℃.
    🌤️ Atmospheric conditions: There is no severe pollution in the atmosphere.

    Technical Parameter

    Product Model Rated Primary Current (A) Accuracy Level Combination Rated Secondary Output (VA) One-Second Thermal Stabilization Current Rated Dynamic Stable Current
    0.2S 0.2 0.5 5P10
    LDBJ9-40.5 20-300 0.2(S)/5P10
    0.5(S)/5P10    		 10 10 20 30 150lin 375lin
    400 40 54 120
    500 63 130
    600-800 15 30 50
    1000-1500 15 30 50 80 130
    2000-3000 100 160
    Frequently Asked Questions (FAQ)
    Q
    What is the LZZBJ9-40.5 current transformer used for?
    The LZZBJ9-40.5 current transformer is primarily used for electricity metering, current monitoring, and relay protection in power systems. It accurately measures current to support billing, load management, and safe operation of electrical equipment.
    Q
    What is the rated primary current range for the LDBJ9-40.5 model?
    The LDBJ9-40.5 model supports a rated primary current range from 20A to 3000A, covering configurations such as 20–300A, 400A, 500A, 600–800A, 1000–1500A, and 2000–3000A.
    Q
    What accuracy levels are available for the LDBJ9-40.5 current transformer?
    The LDBJ9-40.5 current transformer offers accuracy level combinations of 0.2(S)/5P10 and 0.5(S)/5P10, making it suitable for both high-precision metering and protection applications.
    Q
    What are the normal service conditions for this current transformer?
    The transformer is designed for indoor installation. The ambient temperature should be between -5℃ and 40℃, with a daily average not exceeding 30℃. The atmosphere should be free from severe pollution.
    Q
    How does the LZZBJ9-40.5 contribute to relay protection?
    The LZZBJ9-40.5 provides the necessary current signals to protection devices. In the event of a fault, it enables the protection device to quickly cut off the power supply, preventing equipment damage and ensuring personnel safety.
    Q
    What is the rated dynamic stable current for the LDBJ9-40.5 model?
    The rated dynamic stable current varies by primary current rating. For example, it is 375lin for the 20–300A range, 120lin for 400A, and 50lin for the 600A and above configurations, ensuring robust performance under fault conditions.