Technical Support

  1. Advantages of 3PN Surge Protective Device(SPD) Over 4P SPD in Low-Voltage SystemsMarch/22/2025

    Advantages of 3PN Surge Protective Device(SPD) Over 4P SPD in Low-Voltage Systems In low-voltage AC distribution systems, surge protective devices (SPDs) play a critical role in safeguarding...

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  2. REPSUN DTD Technology (Dual thermal disconnector technology)December/15/2024

    REPSUN DTD technology  integrates the fuse thermal disconnector and mechanical disconnectors inside surge protective devices. The patented technology contributes to ...

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  3. System Earthing ArrangementsDecember/07/2024

    All System Earthing Arrangements (SEA) provide equivalent protection of life and property. However each has certain advantages and inconveniences in other terms that may be important for a given ins...

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  4. Rules for Surge Protective Device Installation in Different Earthing SystemsDecember/07/2024

    A variety of documents deal with the subject of surge protective device installation: for example in France, standard NF C 15-531 focuses on the installation rules of LV surge protective d...

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  5. Coordination of surge protective devices in low voltage AC power installationsNovember/29/2024

    The surges protection in low-voltage AC power circuits is commonly realized by Surge Protective Devices (SPDs). These devices divert a large amount of the surge energy to the ground and reduce the s...

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  6. Surge Protective Device CoordinationNovember/29/2024

    Lightning surges contain significant amounts of energy that needs to be diverted away from vulnerable equipment, which is the system that is to be protected from surges. CE-marked electronic equipme...

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  7. Parallel-connected SPDs and series-connected SPDs/FiltersNovember/27/2024

    When designing and installing power distribution systems, engineers and contractors must select surge protective devices (SPDs) to protect electrical equipment and systems from transient overvoltage...

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  8. Response Time of Surge Protective Devices With Spark Gap TechnologyNovember/21/2024

    I. INTRODUCTION Effective surge protection is vital to ensure reliable and uninterrupted operation of modern low-voltage power grids that incorporate sensitive electrical and electronic equipment...

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  9. Per Mode and Per Phase Ratings of SPDNovember/14/2024

     Per Mode and Per Phase Ratings of SPD Surge Protective Devices (SPDs) are used throughout electrical distribution systems, such as at service entrances, transfer switches, and downstr...

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  10. Codes and Standards for Lightning Protection Systems in North AmericaNovember/12/2024

    Codes and Standards for Lightning Protection Systems in North America CSA B72:20 Canadian Standards Association “Installation Code for Lightning Protection Systems” This is the standard t...

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