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JC-I200 Tunnel Cable Fault Location System
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1000

JC-I200 Tunnel Cable Fault Location System

The system is mainly composed of an online monitoring device for cable insulation and an online monitoring device for cable sheath circulation. The cable insulation online monitoring device is mainly based on the improved dielectric loss factor method + DC component method, which gives an early warning to the insulation of the cable so that the cable can be replaced in time. When the cable line fails, the device can identify the faulty branch online. After determining the faulty branch, the cable fault tester is used to accurately locate the fault point in offline mode. The cable sheath circulating current monitoring device monitors the insulation performance of the high-voltage cable in real time based on the cable sheath ground current monitoring data to prevent cable faults caused by the formation of multi-point grounding, cable breakdown, cable aging, and damage.
Free telephone number:0519-85851518
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The system is mainly composed of an online monitoring device for cable insulation and an online monitoring device for cable sheath circulation. The cable insulation online monitoring device is mainly based on the improved dielectric loss factor method + DC component method, which gives an early warning to the insulation of the cable so that the cable can be replaced in time. When the cable line fails, the device can identify the faulty branch online. After determining the faulty branch, the cable fault tester is used to accurately locate the fault point in offline mode. The cable sheath circulating current monitoring device monitors the insulation performance of the high-voltage cable in real time based on the cable sheath ground current monitoring data to prevent cable faults caused by the formation of multi-point grounding, cable breakdown, cable aging, and damage.

Current signal sampling frequency: 10MHz×16 channels

Voltage signal sampling frequency: 40MHz×4 channels +40KHz×1 channels

Circulating current signal sampling frequency (for single-core cable): 15 channels 10KHz power frequency sampling

Current single-ended fault location range: ≤17km

System positioning accuracy: 2.125m

Test blind area: ≤5m

Failure early warning accuracy rate: ≥95%

Accuracy of fault line selection: ≥99%

Communication with cloud: wireless 4G communication

System device communication method: RJ45

Cloud server: self-built method to ensure security

System host computer: Advantech ECU-4784

System expansion: can support up to 253 monitoring units in networking

System power supply mode: AC/DC 220V ±20%

System working environment temperature: -25℃~+70℃

Online safe operation of the system:> 80,000 hours

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