catalogue

Note 1

System Introduction 2

System Function 3

System feature 3

Product Overview 4

Technical parameter 6

System Operation 7

Dear user:

Thank you for using the partial discharge monitoring system KF6901. Before using this product for the first time, please read this user manual carefully, which will help you use the system correctly.

Our aim is to continuously improve and perfect our products. If you have any questions, please contact us in a timely manner and we will reply to you as soon as possible.

Notes:

When using the product, please follow the instructions for standardized operation;

Please do not change the configuration and installation method without permission;

During the operation and installation of this system, attention should be paid to the ambient temperature and humidity, and it is advisable to place it in a dry and ventilated place. It should be dust-proof, moisture-proof, shockproof, and resistant to acidic, alkaline, and corrosive gases;

During equipment transportation, rainwater erosion should be avoided, and collision and falling should be strictly prevented;

If the content of this manual is changed due to an upgrade, we will not notify you in a timely manner.

1、 System Introduction

The KF-6901 partial discharge monitoring system is suitable for detecting partial discharges inside high, medium, and low voltage power switchgear and in station spaces. It is a multifunctional partial discharge detection product that integrates online ground wave/ultrasonic/ultra-high frequency/temperature sensor (configurable) data acquisition, data monitoring, and analysis. The sensors are powered by high-performance lithium batteries and can be installed in both adsorption and wall mounted modes. Lora wireless communication and other methods are convenient for on-site installation, and multiple anti-interference measures are adopted in the design to ensure stable and uninterrupted operation.

2、 System functions

1. Ground wave/ultrasonic/ultra-high frequency/temperature measurement sensor method for timed data acquisition and processing.

2. The sensor uploads partial discharge signal data to the data acquisition unit through coaxial wired/Lora wireless methods.

3. The data acquisition unit tracks multiple discharge point faults in real time, summarizes mean, peak, alarm level, and graph data.

4. The data collection unit comprehensively analyzes the trend and type of faults, and uploads them to the gateway and server.

3、 System features

1. The system is equipped with multiple types of partial discharge signal detection, including ground wave/ultrasonic/ultra-high frequency/temperature sensor.

2. It has parameter configuration function and can perform main parameter programming settings.

3. The system has RS-485, Ethernet, and Lora communication interfaces.

4. The system uploads using TCP/IP and ModBus protocols for communication.

5. The sensor communicates with the data acquisition unit through coaxial wired or Lora wireless communication methods.

6. The partial discharge data acquisition unit can simultaneously support data access and processing from over a hundred sensors.

4、 Product Overview

1. System architecture

Wireless sensors collect ultra-high frequency partial discharge signals from switchgear, and transmit the characteristic data of partial discharge signals to the partial discharge monitoring unit host through amplification, filtering, conversion, and other processing. The partial discharge monitoring host further analyzes and processes the signals, analyzes discharge intensity, phase, spectrum and other information, comprehensively determines the type and severity level of partial discharge, and finally uploads them to the gateway and remote server through RS485 or TCP/IP.

2. Multi functional data processing unit

The multifunctional data processing unit has two installation methods: wall mounted installation and magnetic installation, responsible for downstream and sensor node communication, and upstream gateway and server data upload.

3. Space omnidirectional sensor

Space type ultra-high frequency sensors are wall mounted and usually installed near the entire row of switchgear. The monitoring range of omnidirectional sensors is an effective radius of 60 meters.

Example of Engineering Installation Case:

4. Magnetic sensor

Magnetic ultra-high frequency sensors are usually attached to the metal surface gaps or observation windows on the inside or outside of the busbar cabinet to monitor the partial discharge status of the cabinet in real time. The sensor has wired and wireless interface modes (optional).

Example of Engineering Installation Case:

5、 Technical parameters

（1） Multi functional partial discharge sensor

Appearance and general performance parameters

uShell:Natural color injection plastic

uSize:180mm×120mm×42.5mm

uWeight:1kg

uWorking environment temperature：-25～80℃

uTemperature and moisture resistance:40℃±2℃ and90%RH±3%RHThe24h

uBattery parameters:3.7v/4.2vBuilt-in lithium battery

uInstallation method: magnetic suction

uElectrical fast transient burst immunity:3level

uSurge (impact) immunity: Class I installation category

uElectrostatic discharge immunity:4level

uPower frequency magnetic field immunity:5level

uProtection level:IP65

TEVTransient ground voltage measurement

uSensor: Capacitive

uMeasurement range:0～70dBmV

uFrequency range:1～100MHz

uSensitivity: ≥40dB

uLinearity error: ≤10%

uResolution:1dB

uAccuracy:±1dB

uMaximum pulse/Number of cycles:1400

uMinimum pulse rate:10Hz

AEContact ultrasonic measurement

uMeasurement range:0dBuV～68dBuV（0.001mv～1.000mv）

uResolution:1dB

uAccuracy:±1dB

uSensor sensitivity:-65 dB (0 dB=1 volt/μbar)valid valueSPL)

uFrequency range:20～500 kHz

uUltrasonic resonance frequency:40kHz

uLinearity error: ≤10%

UHFUltra high frequency measurement

uSensor:UHF

uMeasurement range:-65dBm ~0dBm/-10~60dBm

uSensitivity: ≤2.38mV/m

uResolution:±0.5dB

uFrequency response:300MHz～3000MHz

uOutput impedance:50Ω

uOutput interface:BNCtype

communication parameters

uCommunication method:wirelesslora

Communication protocol;Modbus

（2） Multi functional partial discharge collection unit

Appearance and performance parameters

uShell: All aluminum shell

uSize:190mm×100mm×43mm

uWeight:0.5kg

uSupply voltage（V）：100~240VAC，50Hz/60Hz

uPower（W）：15

uWorking environment temperature:-25～80℃

uWorking environment humidity:≤99%

uProtection level:IP65

uError value:≤±1dBm

uNumber of records:500000article

uEthernet port:2a

uSerial port:RS-485 2a

uCommunication protocol;ModbusandGateway communication

Signal acquisition:loraWired, infrared

（3） Space type ultra-high frequency sensor

Appearance and performance parameters

uShell: Natural color injection plastic

uSize:320mm×270mm

uWeight:1kg

uWorking environment temperature:-25～80℃

uWorking environment humidity：≤99%

uProtection level:IP65

uImpedance matching:50Ω

uStanding wave ratio:≤1

uTemperature and moisture resistance:40℃±2℃ and90%RH±3%RHThe24h

uElectrical fast transient burst immunity:3level

uElectrostatic discharge immunity:4level

uSurge (impact) immunity:Type I installation

uEMC test:4level

uPower frequency magnetic field immunity:5level

uAnti aging performance:100Test in a high-temperature chamber at ℃7Tian, the shell does not show any cracking, deformation, or discoloration

uLightning protection test:inrush current8/20usBoth positive and negative levels5time

uInsulation performance:voltage50HzThe3.5kVUnder the circumstances, the pressure time5minThe shell does not break through

uLow temperature impact performance:Place the device in-25Test time in a low-temperature chamber at ℃16hThe shell does not show any cracking phenomenon

uWaterproof grade:IP65

uSensitivity（mm）：≤2.5mV/m

uSignal bandwidth（MHz）：300 ～3000

6、 System operation

1. According to the number of network nodes, the corresponding monitoring terminal server or PC displays the monitoring interface as shown in the figure

Figure 6-1

2. Click on the interface details button to view the amplitude details of the selected sensor at that time. If the spectrum data is called up, the spectrum data can also be viewed in the details

Figure 6-2

3. Historical query

You can query historical amplitude and graph data through historical queries, and filter eligible data by device name, alarm type, and data time

By clicking the export button, amplitude data can be exported to Excel

4. Click on Settings to modify the sensor node name for easy management and maintenance.

5. All event data can be saved as *. hk files for remote transmission and analysis.

6. The system can also be connected to other servers and gateways in the upstream, following the corresponding protocol