Download: HCL2024T Partial Discharge Tester with 4 channels.pdf
Advantage Description
n Multi-Channel Synchronization
Supports 2 or 4 independent measurement channels, enabling simultaneous monitoring of different equipment locations with synchronous sampling, processing, and display, facilitating signal comparison and discharge source localization.
n High Sensitivity & Accuracy
Detection sensitivity can reach 0.1pC or even higher (1pC), capable of identifying extremely weak partial discharges; 12-bit sampling resolution and high sampling rates (e.g., up to 60MHz) ensure no loss of signal details.
n Strong Anti-Interference Capability
AC filtering is incorporated in the power supply section; employs correlation filtering technology and digital filters (selectable from 10kHz to 1MHz) to effectively suppress random interference not synchronized with the power source and fixed-phase interference.
n Advanced Data Processing & Display
Provides multiple display modes such as Ellipse, Line, Sine wave, and 3D PRPD (Phase Resolved Partial Discharge) patterns; supports detailed analysis of individual discharge pulse waveforms and features arbitrary phase windowing for precise analysis of discharges in specific phase regions.
n Comprehensive Data Management
Allows saving test data and waveforms at any time for later re-display and analysis of historical data; supports automatic generation of test report.
n Portable Design & Applicability
Lightweight (e.g., ~8 kg), making them suitable for field use; wide test object capacitance range (e.g., 6pF~250µF).
Application
Leveraging these advantages, four-channel PD detectors are widely used in the following scenarios:
* Power Systems: On-site or online PD detection and localization for critical equipment such as transformers, GIS (Gas Insulated Switchgear), instrument transformers, high-voltage cables, and switchgear.
* Industrial Sector: Condition monitoring and fault diagnosis for large equipment like motors, generators, and compressors in industries including petrochemicals, metallurgy, and rail transportation.
* Research & Quality Control: Suitable for insulation performance research of new materials, type tests during new equipment development, and precise measurements in laboratories.
Usage
To effectively utilize the advantages of a four-channel PD detector, several points should be noted:
1. Correct Wiring & Impedance Matching: Requires selecting appropriate detection impedances and wiring methods based on the test object and relevant standards.
2. Ambient Interference Assessment: The electromagnetic interference situation on-site should be assessed as much as possible before testing, and the instrument's filters and thresholds should be set appropriately.
3. Comprehensive Judgment: PD data needs to be analyzed and interpreted comprehensively in conjunction with the equipment's historical condition, operational status, and results from other tests.
