Online Monitoring System for Surge Arresters via Bus Voltage Method
——Real-Time Precision Monitoring, Ensuring Power Equipment Safety

Product Overview

The Online Monitoring System for Surge Arresters via Bus Voltage Method is an intelligent solution designed for power systems. Composed of high-precision sensors, the JCQ-485 Surge Arrester Monitoring Unit, LHJCQ-PT Bus Voltage Monitoring Unit, and LHRX1908-IED Monitoring IED, this system enables real-time collection of critical parameters such as total current, resistive current, bus voltage, harmonic voltage, and lightning strike records. Leveraging digital transmission and intelligent diagnostics, it supports full lifecycle health management of surge arresters, enhancing grid safety and operational reliability.

Core Features & Advantages

1. High-Accuracy Measurement with Stability

· Utilizes core-piercing zero-flux current sensors with precision up to ±1% (total/resistive current) and ±0.5% (bus voltage). Synchronized sampling ensures real-time data consistency.

· Monitors 3rd, 5th, 7th, and 9th harmonic voltages (±2% accuracy) and system frequency (45–65Hz, ±0.001Hz accuracy), effectively eliminating environmental interference for reliable diagnostics.

2. Anti-Interference Digital Transmission

· Full digital signal transmission (RS485/IEC 61850 protocols) eliminates distortion caused by electromagnetic noise, ensuring data authenticity and credibility.

3. Flexible Scalability & Easy Deployment

· Modular design allows seamless addition or removal of monitoring units without structural changes. Multiple local measurement units can be connected via the IED’s fieldbus, adapting to substations of all sizes.

4. Safe & Non-Invasive Installation

· Core-piercing current sensors directly sample signals from equipment terminals without altering existing electrical connections, ensuring compliance with power safety standards.

Technical Specifications

Sampling Interval: ≤5 minutes
Communication: RS485, IEC 61850 protocols

Applications

· Online monitoring of surge arresters in substations and power plants

· Safety alerts for lightning-prone grid areas

· Condition assessment and fault diagnosis of power equipment

Why Choose Us?

Our system delivers precision, reliability, and adaptability, integrating digital innovation with power industry standards. It provides an end-to-end solution from data acquisition to smart analytics, enabling predictive maintenance of surge arresters, reducing operational costs, and maximizing grid efficiency.

Contact us today for a customized monitoring solution!

Note: Technical specifications are customizable to meet specific requirements.