Four-in-One Partial Discharge Monitoring Integrated Device LX-JFC/4 Partial Discharge Online Monitoring Equipment 10KV35KV
The "Four-in-One Partial Discharge Monitoring Integrated Device" (such as model LX-JFC/4) you mentioned is a very core state sensing terminal in 10kV and 35kV power distribution systems (such as ring main units, switchgear, and box-type substations).
Unlike traditional single-function partial discharge detectors, the four-in-one device breaks technological boundaries by highly integrating four key monitoring functions into one unit, aiming to build a comprehensive insulation safety barrier for high-voltage power equipment.
1. Analysis of the Core Functions of "Four-in-One"
This device integrates the following four core functions to achieve "one device, comprehensive sensing":
Partial Discharge Monitoring (Core): It typically adopts a combined detection technology of pulse current method (HFCT) and ultra-high frequency (UHF) to provide 24-hour continuous online monitoring of partial discharge signals in the cabinet. It can issue early warnings weeks or even months in advance when insulation defects are in their infancy, and supports quantitative analysis of discharge magnitude (pC).
Cable Temperature Monitoring: Targeting the most frequent fault points in distribution networks, it uses wireless passive temperature sensors to track temperature changes at three-phase cable terminations in real time. When the temperature reaches a preset threshold, an audible and visual alarm is triggered to prevent overheating and secondary insulation faults caused by increased contact resistance or overload.
High-Voltage Live Indication: It clearly displays the live status of high-voltage circuits through high-brightness indicator lights and reserves standard phase-matching interfaces, facilitating on-site rapid phase verification of dual circuits by maintenance personnel.
Fault Indication: For common short-circuit and ground faults in distribution networks, it uses fault current sensors to accurately locate fault sections. Maintenance personnel can directly lock onto the faulty switchgear without patrolling section by section, significantly shortening outage repair time.
2. Technical Features and Intelligent Operation & Maintenance
Forced Interlocking Linkage: The high-voltage live indication function is not only for indication but also integrates a forced interlocking interface that can link with the electromagnetic lock of the switchgear. When the equipment is live, it forcibly locks the operating handle and cabinet door to prevent misoperation by maintenance personnel.
Intelligent Diagnosis and Alarm: The device has built-in partial discharge diagnostic analysis and cable head temperature alarm algorithms, using adaptive anti-interference technology to eliminate background noise on site. When abnormalities are detected, data is uploaded to the backend via panel LED lights, relay contacts, and communication methods such as RS485/4G, enabling remote early warning.
Intuitive Human-Machine Interaction: The equipment is usually equipped with a digital OLED display interface that can locally display comprehensive data such as probability intensity, discharge frequency, live status, cable temperature, and cabinet temperature and humidity, making it easy for inspection personnel to quickly assess.
3. Application Value
The application of the four-in-one partial discharge monitoring device achieves a transformation from "post-fault repair" to "predictive maintenance." Through collaborative networking of multiple sensors, it builds a comprehensive sensing network covering insulation status, temperature status, live status, and fault status, effectively reducing operation and maintenance costs and improving the reliability of power distribution equipment operation.
💡 Further Assistance
May I ask what your specific needs are currently:
Solution Design and Selection: Do you need to plan the deployment scheme of the four-in-one device and the integration of backend communication protocols (such as IEC61850, Modbus, etc.) based on the number of your 10kV/35kV switchgear or ring main units?
Fault Diagnosis Analysis: Have you received partial discharge or temperature alarms during actual operation and need assistance in analyzing PRPD/PRPS patterns or temperature trends to determine the specific type of insulation defect?
Installation and Commissioning: Do you need to understand the wiring specifications inside the ring main unit, sensor installation position requirements, or the linkage commissioning method of the forced interlocking circuit for this device?
