Online Partial Discharge Tester is a professional device used for real-time monitoring of partial discharge phenomena in power equipment. This device can perform detection while the equipment is in normal operation without power outage, greatly improving the safety and reliability of the power system. The following is an overview of an article about the Online Partial Discharge Tester:
Online Partial Discharge Tester
Introduction
Partial discharge detection is an important part of power system maintenance, which is of great significance for preventing power equipment failures and improving system reliability. As an efficient and convenient detection method, the Online Partial Discharge Tester plays a crucial role in the maintenance and monitoring of power equipment.
Product Overview
Name: Online Partial Discharge Tester
Model: [Specific Model]
Manufacturer: [Manufacturer Name]
Main Features
Online Monitoring: Capable of detecting while the equipment is in operation without power outage.
Multi-mode Detection: Supports multiple detection modes such as TEV (Transient Earth Voltage), UHF (Ultra-High Frequency), AA (Acoustic Emission), and HFCT (High-Frequency Current Transformer).
High Sensitivity: Can capture weak partial discharge signals.
Wide Frequency Band: Covers a broad frequency range to adapt to different detection needs.
Portable Design: Lightweight and easy to carry, suitable for field operations.
Multifunctional Display: Equipped with a high-definition color LCD screen to display detection results and setting parameters.
Built-in Storage: Can save a large amount of detection data for subsequent analysis.
Long Battery Life: Supports long-duration continuous operation.
Quick Location: Helps locate the discharge source through sound indication and numerical display.
Technical Parameters
Detection Frequency: Varies according to different detection modes, such as ultrasonic 20kHz to 200kHz, UHF 300MHz to 1.5GHz.
Sensitivity: ≥100dB
Dynamic Range: ≥60dB
Battery Endurance: ≥8 hours
Display Screen: High-definition color LCD, resolution [Specific Resolution]
Dimensions and Weight: [Specific Length]×[Specific Width]×[Specific Thickness], weight [Specific Weight]kg
Operating Temperature: -20℃ to +50℃
Storage Temperature: -40℃ to +70℃
Application Scenarios
Power Transformers: Detect partial discharge phenomena inside transformers.
Switchgear: Including high-voltage switchgear and ring main units.
Cable Joints: Check the insulation condition of cable joints and terminations.
GIS/GCB: Detect partial discharge in gas-insulated switchgear.
Motors: Evaluate the insulation status of motors.
Usage Instructions
Power On: Press the power button to start the device.
Settings: Adjust parameters such as detection frequency and sensitivity.
Detection: Place the sensor close to the equipment under test and observe the screen display.
Location: Locate the discharge source based on sound prompts and numerical display.
Data Recording: Save detection data.
Power Off: After detection, press and hold the power button to turn off the device.
Maintenance and Care
Cleaning: Use a soft cloth to wipe the device surface.
Storage: Store in a dry and ventilated place.
Calibration: Regularly calibrate the device.
Safety Precautions
Read Before Operation: Please read the user manual carefully.
Protective Measures: Wear necessary personal protective equipment.
No Touching: Do not touch high-voltage equipment.
Working Principle
The working principle of the Online Partial Discharge Tester is based on detecting the physical phenomena and electrical signal changes generated during partial discharge. Common detection methods include:
Pulse Current Method: Detects the pulse current signals generated by partial discharge.
Ultrasonic Monitoring: Detects ultrasonic signals generated in the discharge area.
Transient Earth Voltage (TEV) Detection: Detects electromagnetic wave signals caused by changing electric fields.
Ultra-High Frequency (UHF) Detection: Detects ultra-high frequency electromagnetic wave signals generated by partial discharge.
Advantages and Features
Online Monitoring: Capable of detecting while the equipment is in operation without power outage.
Multi-mode Detection: Supports multiple detection modes, adaptable to different types of equipment and detection needs.
High Sensitivity: Can capture weak partial discharge signals.
Quick Location: Helps locate the discharge source through sound indication and numerical display.
Conclusion
The Online Partial Discharge Tester is an important tool in power system maintenance. It helps technicians identify potential partial discharge problems early, thereby taking preventive measures to ensure the safe and stable operation of the power system.
The above is a typical article overview of the Online Partial Discharge Tester. Specific product features and parameters may vary depending on the manufacturer and model. If you need detailed information about a specific model, please provide the specific model name or other relevant information.
