FC-9625 UHF Partial Discharge Sensor

Partial discharge has become an important cause of insulation deterioration of power transformers, so the monitoring and evaluation of partial discharges has become an important means of monitoring the insulation status. At present, the popular methods for monitoring the partial discharge state of transformers mainly include the UHF method. The FC-9625 transformer partial discharge monitoring device is a UHF method. System composition: 1 sensor (ultra high frequency), four-channel data processing unit (partial discharge IED), station-side server, and professional analysis and diagnosis system software.

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Parameters

Working mode: built-in UHF sensor or external UHF sensor, continuous online monitoring

Ultra high frequency (UHF) frequency range: 300～1500MHz

Built-in UHF sensor: ≤5pC

External ultra-high frequency sensor: ≤10pC

Data processing sampling period: ≤20μs

Data format: The device has a data transmission interface. It should be connected to CMA directly or through the DL/T 860 protocol of TCP/IP to communicate with CAC. The configuration and modeling should be carried out in strict accordance with the relevant requirements of State Grid Corporation and Zhejiang Electric Power Company (see appendix for details) to realize services such as data reading and writing, reports, logs and files, and upload the device's own alarm through the data quality.

Ability to expand the number of collection stations: no less than 120 monitoring points for a single system

System design service life: ≥10 years