Online Monitoring Device for Grounding Circulation in Power Cable Sheath: A New Guarantee for Power Safety

Product Aliases: Cable Sheath Circulating Current Online Monitoring System, Power Cable Sheath Grounding Circulating Current Online Monitoring Device, Cable Grounding Circulating Current Tester, Cable Sheath Comprehensive Online Monitoring Device, Cable Sheath Circulating Current Online Monitoring Device

Cable Sheath Circulating Current Online Monitoring System

I. Product Description:

Cable sheath circulating current is a complex and important phenomenon in high-voltage power cable systems, and its formation is closely related to multiple factors of the cable system. Unbalanced three-phase load, electromagnetic induction and temperature change are the main causes of sheath circulating current. The interaction of these factors induces unbalanced voltage and current on the metal sheath of the cable, which is the sheath circulating current. The existence of sheath circulating current has a significant impact on the cable system. The heating phenomenon caused by sheath circulating current accelerates the aging process of the metal sheath of the cable, reduces its insulation performance and mechanical strength, thereby shortening the service life of the cable. Secondly, excessive circulating current may also cause local overheating, increasing the risk of cable faults, such as insulation breakdown and short circuit. To effectively deal with these problems, Shenzhen Telink Technology Co., Ltd. has innovatively developed the Cable Sheath Circulating Current Online Monitoring System.

II. Working Principle:

The Cable Sheath Circulating Current Online Monitoring System integrates core components such as sheath circulating current sensors and collectors, realizing accurate real-time monitoring of grounding current. This system not only has the ability of anomaly detection to instantly discover potential problems, but also protects key assets such as cable lines, their cross-interconnection lines and grounding wires through preventive monitoring. Its remote viewing function allows maintenance personnel to receive monitoring data anytime and anywhere, and fully grasp the operating status of the cable. This real-time early warning mechanism replaces the traditional manual regular inspection mode, greatly reducing the workload of operation and maintenance personnel. At the same time, when the current is abnormal, the system will automatically alarm and inform the location of the stolen grounding wire, effectively preventing the occurrence of sudden accidents. Through precise measurement and regular inspection, the efficiency and accuracy of system maintenance are significantly improved.

III. Product Functions:

◆ Online Monitoring: Real-time monitoring of the grounding current waveform, amplitude, etc. of the metal sheath of high-voltage cable lines, reducing the work intensity of inspection personnel and achieving high-precision detection;

◆ Automatic Alarm: When the transient increase of grounding current or sudden decrease to zero, the alarm function will be automatically triggered;

◆ Cable Theft Monitoring: When the grounding wire is stolen, the system will automatically alarm and inform the location of the stolen grounding wire;

◆ System Self-Diagnosis: Real-time detection of the system's own faults and uploading the results to the monitoring platform;

◆ Remote Viewing: Real-time monitoring data can be sent to the handheld devices of maintenance personnel via 2G/3G/4G networks;

◆ Information Recording and Analysis: Record relevant parameters such as measurement data and fault records, providing intuitive charts such as curve graphs and bar graphs, and statistical reports (weekly, monthly, quarterly, semi-annual, annual);

◆ Solar power supply, supporting CT power taking, meeting the power supply needs of complex on-site environments.

IV. Technical Parameters:

1. Sensitivity: ≤±0.1A

2. Measurement Range: Not less than 0-300A/50Hz

3. Maximum Measurement Deviation: Standard reading ×1% + 0.5A

4. Sensor Type: Clamp-on split-core sensor

5. Insulation Isolation Level: Not less than DC10KV/1 minute

7. Housing Material: Adopt materials that are corrosion-resistant and do not generate eddy currents

8. Protection Grade: Comply with the IP65 protection grade requirements for enclosures specified in GB4208

V. Summary:

In conclusion, the Cable Sheath Circulating Current Online Monitoring System is a phenomenon that cannot be ignored in high-voltage power cable systems, and its monitoring and control are of great significance for ensuring the safe and stable operation of the power system. By using the Cable Sheath Circulating Current Online Monitoring System for real-time monitoring and control, the risk of cable faults can be significantly reduced, the overall operation efficiency of the power system can be improved, and cable faults and safety issues caused by circulating current can be effectively prevented and reduced.

For more details about the equipment, please call Ms. Li from Shenzhen Telink Technology Co., Ltd.

Mobile Phone Number: 13682351635 (WeChat is the same number and can be added)

Customized products, the quoted price is the reference price range at the time of current market release, and the actual price is subject to negotiation.

VI. Notes:

1. Please operate with extreme care to prevent the equipment from accidentally falling or being subjected to strong collisions.

2. To ensure the normal operation of the solar panel, please avoid subjecting it to strong external impacts to prevent damage.

3. During installation, please try to ensure that the solar panel is facing the direction of sunlight to maximize its energy collection efficiency.

4. Before installing the equipment, please make sure the power switch is turned off. After installation is complete, safely turn on the power switch.

5. Without authorization, it is strictly prohibited to disassemble the equipment structure or circuit board privately. Private disassembly will void the warranty.