Current Transformer

LZZBJ9-10 Current Transformer

LZZBJ9-10 Epoxy Resin Cast Current Transformer – High-precision, fully sealed, and insulated transformer for 10kV power systems. Ideal for energy measurement, current monitoring, and protection applications in industrial and utility settings. Durable, weather-resistant, and easy to install.  

Description

The LZZBJ9-10 Current Transformer is a high-quality, epoxy resin cast, fully enclosed bushing-type transformer designed for 10kV and below power systems with a rated frequency of 50Hz or 60Hz. It is specifically engineered for energy measurement, current monitoring, and electrical protection applications.

Key Features:

  • Robust Insulated Structure: Fully encapsulated in epoxy resin for superior electrical insulation, mechanical strength, and environmental protection against moisture, dust, and corrosion.

  • High-Precision Core and Windings: Made from premium cold-rolled silicon steel sheets with carefully wound primary and secondary coils, ensuring accurate current measurement and minimal loss.

  • Wide Application Range: Rated primary currents from 5A up to 2000A and secondary currents of 1A or 5A. Suitable for various measurement and protection accuracy classes (0.2, 0.5, 5P, 10P).

  • Reliable and Safe Operation: Secondary winding grounding ensures protection against high voltage backflow. Strict adherence to safety during installation, operation, and maintenance prevents operational hazards.

  • Durable and Weather-Resistant: External housing made from high-strength plastic or metal with excellent mechanical durability, suitable for outdoor or indoor installations.

Technical Highlights:

  • Rated Voltage: 10kV

  • Rated Frequency: 50Hz or 60Hz

  • Insulation Levels: 42kV power frequency withstand, 75kV lightning impulse withstand

  • Accuracy Class: Measurement (0.2, 0.2S, 0.5, 0.5S), Protection (5P, 10P)

  • Wide temperature and humidity tolerance: -25°C to +40°C, relative humidity up to 95% daily

Easy Installation & Maintenance:

Designed with user-friendly mounting holes and terminals for quick setup. Routine checks include insulation resistance, temperature monitoring, and ratio verification to ensure long-term reliability.

Why Choose LZZBJ9-10:

Perfect for industrial substations, power plants, and commercial energy monitoring systems, the LZZBJ9-10 combines accuracy, safety, and durability to support high-performance electrical measurement and protection needs.

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