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    High-voltage current-limiting fuses are critical protection devices designed to safeguard electrical equipment from overcurrents and short circuits. They operate by rapidly interrupting excessive currents, ensuring the safety and reliability of power systems.
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    We offer fully sealed oil-immersed transformers and epoxy resin cast dry-type transformers, both of which combine excellent electrical performance with long-term operational stability, are capable of operating reliably under a wide range of demanding conditions, and fully meet the varying requirements for reliability and environmental adaptability in power distribution and various industrial applications.
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    FUYI is also a leading manufacturer of medium and high voltage cable connectors and accessories for power distribution applications. Our product range includes single-phase or three-phase insulated cable connections to equipment such as transformers, switchgear, and branch boxes via premoulded connectors.
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  4. Current Transformer
Current Transformer

IEC 60044-1 current transformers step down primary currents to 1A/5A – enabling accurate metering and reliable relay protection for switchgear.

  • Provides galvanic isolation from high-voltage circuits, ensuring safety for both instruments and operating personnel.
  • Delivers clean, proportional current signals to meters and protection relays for precise billing and fast fault detection.
  • Customizable ratios, classes (0.2, 0.5, 5P10), and secondary outputs for global distribution and substation applications.
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Insulation Parts
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Medium Voltage Fuse
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Post Insulator Wall Bushing Plug-in Bushing Contact Box
Current Transformer Potential Transformer
Lightning Arrester Over Voltage Protector
Fixed Contact Tulip Contact Contact Arm Flat Contact
Auxiliary Switch Cable Clamp
Indoor Disconnectors Load Switches Vacuum Circuit Breakers Fully Enclosed Gas-Insulated Switchgear Box Type Outdoor Prefabricated Substation High Voltage Switchgear Series Low Voltage Switchgear Series
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Split-Core Zero-Sequence Current Transformer
LXKφ 80~140
Split-Core Zero-Sequence Current Transformer
Three-Phase Integrated Current Transformer (Combined CT)
LSY3-10/107
Three-Phase Integrated Current Transformer (Combined CT)
Indoor High Voltage Current Transformer
LZZBJ9-35KV
Indoor High Voltage Current Transformer
Indoor Hign Voltage Current Transformer
LZZBJ9-24KV
Indoor Hign Voltage Current Transformer
Indoor Medium Voltage Current Transformer
LZZBJ9-10A
Indoor Medium Voltage Current Transformer
Indoor Medium Voltage Current Transformer
LZZBJ9-10C
Indoor Medium Voltage Current Transformer
Indoor Medium Voltage Current Transformer
LZZBJ6-10
Indoor Medium Voltage Current Transformer
Outdoor waterproof Current Transformer for Circuit Breaker
LZW32(43)-10A/B/C
Outdoor waterproof Current Transformer for Circuit Breaker
Indoor High Voltage Current Transformer
LCZ-35
Indoor High Voltage Current Transformer
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FAQ Related To Insulators
What features make the JDZW-10R voltage transformer suitable for operation in harsh environments, such as the Middle East, and how does it handle extreme UV and coastal conditions? Expand
The JDZW-10R series outdoor voltage transformer is custom-designed to withstand the extreme conditions of the Middle East, such as intense UV radiation and coastal salt spray. UV-Resistant Epoxy Resin: We utilize a specialized UV-resistant epoxy resin casting technology. This effectively prevents surface embrittlement or cracking caused by prolonged exposure to high-intensity sunlight. Composite Silicone Rubber Sheds: The product features integrated silicone rubber sheds, which significantly increase the creepage distance. This ensures superior insulation performance and prevents surface tracking (leakage), even in heavy salt spray or high-humidity environments. High Ingress Protection (IP) Rating: With an IP55 certified sealing design, the transformer ensures that internal components remain completely protected from fine sand, dust, and condensation.
Given the compact space and high ambient temperatures of indoor switchgear in the Middle East, how do your voltage transformers prevent overheating during high-load operation? Expand
Our indoor series (e.g., JDZ10) is designed to optimize both heat dissipation and space efficiency:  Thermal Stability: Utilizing international-standard flame-retardant epoxy resin, these units maintain high performance in enclosed switchgear with restricted airflow. Space Optimization: The JDZC-6/10 and similar models feature an optimized core, resulting in a compact and lightweight profile perfect for Ring Main Units (RMU) and slim metering compartments. Superior Cool-Running: Thanks to premium silicon steel cores, the temperature rise at rated load is kept significantly below industry thresholds, effectively prolonging the equipment’s lifespan in harsh, high-heat environments.
LATEST EVENTS AND BLOG
How to Set Up a Medium Voltage Current Transformer for Metering?
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How to Set Up a Medium Voltage Current Transformer for Metering?
Step-by-step guide to correctly install and wire a medium voltage current transformer for revenue metering. Covers ratio...
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How Often to Inspect Switchgear Contacts for Heat and Corrosion?
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How Often to Inspect Switchgear Contacts for Heat and Corrosion?
Discover how often to inspect switchgear contacts for heat and corrosion based on operating environment, load, and criti...
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OEM/ODM & Quality Control
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OEM/ODM & Quality Control
Standard components don't always fit every application. Non-standard insulator heights, special transformer ratios, cust...
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25+ years as a manufacturer focused on medium & high voltage switchgear components.
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