Surge Arrester Monitoring
Surge Arrester Monitoring system is used to measure the full current (100 μ A-50mA), with a resistive current accuracy of ± 5%, and has lightning strike recording function. Surge Arrester Monitoring adopts high-precision zero flux current sensors and high-performance microprocessors, which have superior accuracy and reliability, fully comply with the IEC 61850 protocol, and can achieve comprehensive GIS status monitoring and intelligent warning, helping the safe and stable operation of the power grid. In the field of online monitoring of power equipment, we firmly believe that "professionalism creates quality, service creates value", and provide you with reliable solutions that have been verified through years of on-site application.
Description
Details page content
I. A brief product introduction
Metal oxide zinc surge arresters are key power equipment components, with resistive current being a critical indicator of insulation performance. Real-time online monitoring of total current, resistive current, capacitive current, and lightning events enables continuous insulation status assessment. Analyzing this data helps identify potential faults early and supports condition-based maintenance. This ensures safe, reliable, and economical power system operation, provides maintenance personnel with reliable insulation information, reduces accidents, extends maintenance intervals, cuts outage frequency and duration, and improves equipment utilization and economic efficiency.
II. Model Explanation
III. Product Details/Advantages
1. High-Precision Adaptive Measurement
Active zero-flux sensor with auto-ranging. Intelligently selects gain to achieve full-range accuracy and capture weak signals like resistive current.
2. High-Performance Processing
High-performance microprocessor with optimized signal circuits ensures real-time accuracy, improving measurement precision and response speed.
3. Environmental Stability
Industrial-grade key components offer excellent temperature characteristics and anti-aging performance for reliable long-term operation under harsh power system conditions.
4. Strong Surge Tolerance
Unique current acquisition design withstands large surges from lightning or overvoltage, ensuring device remains undamaged and operates reliably in extreme situations.
IV. Product Parameters
No | Parameter Name | Unit | Standard parameter values | |
1 | sensor type |
| Core penetrating active zero magnetic flux sensor | |
2 | leakage current | measurement range | mA | 0.1～650 |
resolution | μA | 10 | ||
measurement error |
| ±1% or ±10μA | ||
3 | resistive current | measurement range | mA | 0.01～650 |
resolution | μA | 10 | ||
measurement error |
| ±1% or ±10μA | ||
4 | bus voltage | measurement range | kV | 35～1000 |
measurement error | % | ±0.5 | ||
5 | System frequency | measurement range | Hz | 46～60 |
measurement error | Hz | ±0.01 | ||
6 | Harmonic voltage | measurement range | time | 3,5,7,9 |
measurement error | % | ±2 | ||
7 | ambient temperature | measurement range | ℃ | －30～80 |
measurement error | ℃ | ±0.5 | ||
8 | temperature and humidity | measurement range | % | 0～100 |
measurement error | % | ±3 | ||
9 | sampling period | min | ≤5 | |
10 | Display content |
| Status data (leakage current, resistive current) | |
| Historical Data Table | |||
| Data Trend Analysis | |||
11 | System design service life | year | Over 8 years | |
V. Scope of Supply
No | Device Name | Specifications and models |
1 | Surge Arrester Monitoring | SUN-IGuard-301 |
1.1 | Industrial PC | split-type |
1.2 | Lightning arrester monitoring device | Meet the measurement accuracy requirements |
1.3 | Bus voltage sampling device | 220kV single busbar, one monitoring device required for each phase |
VI. Customized Solutions
We offer tailored GIS online monitoring system design and upgrades for your specific scenarios and needs. For non-urgent deployments, we customize core parameters, acquisition frequency, alert thresholds, and communication protocols. Using high-precision sensors and industrial-grade modules, the system ensures accuracy and stability across various voltage levels, reducing long-term maintenance costs while supporting reliable operation.
VII. Quality
Qualification association: We adhere strictly to globally recognized regulations and protocols, integrating environmental excellence and quality management throughout the product lifecycle.
VIII. Real-world cooperation cases
The Weda Bay #5 substation main transformer expansion in Indonesia is now operational. The system provides real-time monitoring of surge arrester performance parameters including total and resistive current. Utilizing high-precision sensing and intelligent analytics, it detects early insulation deterioration and issues proactive alerts, transitioning maintenance from periodic inspections to predictive condition-based strategies. This enhances equipment reliability, prevents outage risks, and strengthens grid operational safety.
IX. Application Scenarios
1. Remote Substations & Lines (e.g., mountains, deserts, forests)
Remote condition assessment reduces risky and costly manual inspections.
2. Coastal or Industrial Areas
Real-time insulation data enables timely, data-driven maintenance against salt spray or chemical pollution.
3. Critical Facilities (e.g., data centers, semiconductor plants, financial hubs)
Prevents minute-long outages that cause major losses - serves as a preventative outpost.
4. Crucial Urban Grids & Key Substations
Prevents arrester failures from causing maloperations or cascading blackouts, enhancing grid reliability.
X. Our Service
Our after-sales service and technical team solemnly promises:
Pre-Sales Service
- Consultation & Guidance: 24/7 online support with expert engineers to clarify needs, recommend solutions, and advise on pricing and processes.
- On-Site Inspection: Engineers visit sites for precise measurements and environmental assessment, deliver detailed reports to support tailored system design.
After-Sales Service
- Year Warranty: Covers material/manufacturing defects as per contract.
- Dedicated Support: One-on-one follow-up from a specialized team for seamless assistance.
- Multi-Channel Help: Support via contacts, project teams, or website; fast global coordination for repairs or replacements during warranty.
XI. Product usage tutorials, solutions, and technical problem notifications
1. Operation and Maintenance
- The front-panel digital display remains constantly lit, showing the leakage current value and action count.
- The data displayed on the system must match the data shown on the monitoring backend.
- The leakage current should typically be 0.3–0.5 mA for arresters below 220kV, and 2–5 mA for arresters rated 330–750kV.
2. Ordering Information
[Click here to view the complete product manual & detailed instructions >]
XII. Packaging and Transportation
XIII. Factory Strength
1. Qualification Certificates
2. Innovative technologies/capabilities
(1) High-tech enterprise certificate
(2) Product test report
3. Supply Chain Advantages
1. Vertical Integration of Core Components
Independent R&D and manufacturing of core monitoring units (data acquisition & communication modules). Mastery of high-precision leakage current sensing and signal processing ensures data accuracy, long-term stability, and creates a technological barrier.
2. Full-Chain Autonomy
Full autonomy and controllability from core sensing to edge computing, ensuring technical security and product reliability.
3. Agile Localized Collaboration
Deep integration with high-quality supply chain partners in Yangtze River Delta and Pearl River Delta. Strategic partnerships with precision electronics and metal component suppliers enable an efficient short-chain supply model.
4. Fast Response & Global Support
Quick order response and flexible customization. Advantages in quality, cost, and delivery. Timely technical support and supply chain security for global customers.
4. Professional production equipment (CNC)
XIV. FAQ
Q1: What is the main failure mode of a GIS surge arrester?
A1: Varistor aging, which increases leakage current and can lead to thermal runaway, causing a short-circuit or explosion.
Q2: What are the key parameters to monitor?
A2: Total current and resistive current. The resistive current is the critical indicator for varistor aging.
Q3: What else should be monitored besides current?
A3: The operation counter (to track overvoltage events) and SF6 gas density (to ensure proper insulation).
Q4: How is arrester aging or abnormality judged?
A4: By analyzing trends and comparisons: a steady rise in resistive current, a significant increase from baseline (e.g., double), or a large imbalance between phases (e.g., >30%).
Q5: What actions should be taken if data is abnormal?
A5: First, verify the data's accuracy. For a slow trend, increase monitoring frequency. For a sharp increase or an exceeded threshold, plan for immediate shutdown and replacement due to high risk of failure.
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