Surge Arrester Monitoring
Surge Arrester Monitoring system measures full current (100 μA–50mA) with ±5% resistive current accuracy and provides lightning strike recording. It utilizes high-precision zero-flux current sensors and high-performance microprocessors for superior accuracy and reliability. Fully compliant with IEC 61850 protocol, the system delivers comprehensive GIS condition monitoring and intelligent early warning, supporting safe and stable power grid operation.
Description
Details page content
I. A brief product introduction
In the field of power equipment online monitoring, we firmly believe that "expertise builds quality, service creates value." By partnering with us, you gain reliable solutions proven through years of field application.
We use first-tier components such as Honeywell sensors and industrial-grade electronics to ensure stable performance even in harsh environments. Technologically, we integrate advanced methods including UHF partial discharge detection and zero-flux sensing, with all performance indicators validated across hundreds of substations and full compliance with IEC 61850. For service, we offer 48-hour rapid response and comprehensive "concierge" support from design to maintenance, ensuring you complete peace of mind.
II. Model Explanation
III. Product Details/Advantages
Equipped with a high-precision zero-flux current sensor, the device minimizes phase difference during leakage current acquisition, ensuring accurate phase information for resistive current calculation. It incorporates a high-performance microprocessor and a carefully designed signal processing circuit, delivering superior performance and high measurement accuracy. Built with highly reliable electronic components, it offers excellent temperature characteristics and anti-aging properties, enabling long-term reliable operation in power systems. A unique current protection circuit allows it to withstand various lightning impulse currents while maintaining reliable performance.
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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 |
Remarks |
|
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 provide tailored GIS online monitoring system design and upgrade services to meet your specific operational scenarios and monitoring requirements. If you have sufficient time for system deployment without urgent failure handling needs, we can develop a customized system according to your individual specifications for core monitoring parameters, data acquisition frequency, alert thresholds, and communication protocols.
Utilizing high-precision sensors and industrial-grade data processing modules, the system ensures monitoring accuracy and stability while adapting to GIS equipment of various voltage levels. This solution effectively reduces long-term maintenance costs while supporting reliable long-term operation.
VII. Quality
At Rsafele Electric, quality management has no blind spots, covering the entire process from raw materials to finished products, and relying on strict processes and written plans.
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
• Remote Substations & Transmission Lines (e.g., mountains, deserts, forests): Online monitoring allows for remote condition assessment, significantly reducing the need for risky and costly manual inspections.
• Coastal or Industrial Areas: Arresters here face accelerated aging from salt spray or chemical pollution. The system provides real-time insulation performance data, enabling more timely and data-driven maintenance than periodic checks.
• Critical Facilities (e.g., Data Centers, Semiconductor Plants, Financial Hubs): For these users, even a minute of power outage results in significant losses. Online monitoring serves as a preventative "outpost" for grid infrastructure.
• Crucial Urban Grids & Key Substations: Prevents arrester failures from causing maloperations or cascading power outages, enhancing grid reliability.
X. Our Service
Our after-sales service and technical team solemnly promises:
Quality Commitment:
All equipment and purchased components are brand new and qualified products, with quality certificates provided.
After-sales Guarantee:
Free handling of design, manufacturing, and material defects during the warranty period; lifetime paid maintenance after the warranty period.
Spare Parts and Documentation:
Provision of spare parts, complete technical documentation, and drawings as per the contract.
Collaboration and Cooperation:
Active cooperation in interface coordination and strict adherence to contractual and meeting agreements.
XI. Product usage tutorials, solutions, and technical problem notifications
1. Operation and Maintenance
During operation, Surge Arrester Monitoring displays the leakage current and cumulative action count of the arresters on its front panel. This data is also transmitted to an integrated monitoring unit and ultimately displayed on the monitoring backend.
Under normal operation, the SUN-IGuard-301 system exhibits the following characteristics:
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.
If any of these characteristics are not met during inspection, it indicates a system malfunction that requires investigation.
2. Ordering Information
Please specify the system voltage level, the complete model name, the required quantity, and any special requirements when placing an order.
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
Vertical Integration of Core Components: We independently research, develop, and manufacture our core monitoring units, including key data acquisition and communication modules. This control over core technologies for high-precision leakage current sensing and signal processing ensures data accuracy, long-term stability, and creates a technological barrier. It guarantees full autonomy and controllability from core sensing to edge computing.
Agile Localized Collaboration: We have established deep integration with high-quality supply chain partners in the Yangtze River Delta and Pearl River Delta regions. Strategic partnerships with precision electronics and metal component suppliers enable an efficient, short-chain supply model. This allows us to respond quickly to orders, facilitate flexible customization, and provides significant advantages in product quality, cost control, and delivery timelines, while ensuring 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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