LMZ1(2,3,4)D-HZT1 Current Transformer
Product Functions
This current transformer serves as a high-precision interface between power lines and grid management systems. Its primary function is to accurately measure and step down high primary currents for two key applications. It provides ultra-precise signals (0.2S class) specifically for revenue metering and high-accuracy energy data acquisition, which is crucial for state grid operations and financial settlement. It delivers highly reliable measurement signals (0.5 class) for system monitoring, load analysis, and data collection in grid control centers and SCADA systems, supporting operational decision-making.
Applicable Environment
As a dedicated State Grid product, it is engineered for deployment within national or regional power transmission and distribution networks. Typical applications include installation in smart substations, high-voltage switchgear, grid nodal measurement points, and dedicated metering bays for large industrial users or generation facilities connected to the state grid. It is suited for both indoor and protected outdoor environments where precise, tamper-resistant measurement is paramount for grid stability, efficiency, and commercial billing integrity.
Product Highlights
◆State Grid Certified Design: As a designated "State Grid Special Transformer", this product is engineered to meet the specific, stringent technical and performance requirements of national grid infrastructure, ensuring compatibility and trust for critical grid applications.
◆Dual High-Accuracy Options: Offers superior precision with both 0.2S class (for statutory or revenue metering) and 0.5 class (for high-grade measurement) accuracy levels, providing flexibility for different precision needs within the grid ecosystem.
◆Wide Range & Dual Output Compatibility: Features a broad primary current measurement range (75~1500A) and provides both 1A and 5A secondary current outputs, ensuring versatility to match various system designs and international relay/metrological device standards.
◆Robust Electrical Performance: Built with a power frequency withstand voltage of 3kV for 1 minute, ensuring strong insulation integrity and reliability under transient overvoltage conditions, which is critical for grid-level equipment.
◆Global Standard Compliance: Manufactured in strict accordance with GB/T20840.1 and GB/T20840.2, adhering to recognized national standards that align with international practices for safety, accuracy, and performance, making it a reliable choice for modernized grid infrastructure.