EN
GDJF-2008 3-Channel Digital Partial Discharge Detector
GDJF-2008 Digital Intelligent 3-Channel Partial Discharge Detector with AC Only Mode, 3-Channel Synchronous Acquisition, 100MHz Sampling Rate, 0.1pC Sensitivity, TDOA Fault Location, Professional PD Analysis Software, for Transformer Three-Phase and GIS Multi-Chamber Synchronous Testing.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GDJF-2008 is a high-efficiency, IEC 60270-compliant 3-channel digital partial discharge detectorexclusively designed for synchronous multi-point partial discharge measurement of AC high-voltage electrical equipment in both laboratory and field environments. It fully complies with IEC 60270:2015, GB/T 7354-2018 and DL/T 848.1-2016 standards, adopting an advanced 12-bit high-speed ADC + FPGA hardware acceleration architecture to achieve 3-channel synchronous data acquisition and real-time signal processing.
The system features a pure AC optimized design with a wide test power frequency range of 50~400Hz, supporting both power frequency and triple frequency tests. With an industry-leading 0.1pC detection sensitivity and >80dB dynamic range, it can capture extremely weak partial discharge signals while accurately measuring strong discharge signals without saturation. Its unique 3-channel synchronous acquisition capability allows simultaneous measurement of three independent points, such as transformer three-phase windings or GIS three gas chambers, improving test efficiency by 50% compared to 2-channel models. It also supports TDOA (Time Difference of Arrival) fault location technology for accurate positioning of partial discharge sources in cables and GIS equipment. Equipped with 9 standard frequency band combinations and multiple digital anti-interference technologies, it can effectively suppress various on-site interferences and ensure reliable measurement results. The professional PD analysis software provides comprehensive data analysis functions including PRPD, PRPS, 3D maps and trend graphs, supporting automatic discharge type identification and severity assessment. With a portable engineering chassis design and built-in 12-inch industrial touch screen, it is suitable for both laboratory batch type tests and on-site acceptance tests. Ideal for transformer three-phase partial discharge tests, GIS multi-chamber synchronous detection, cable fault location, factory batch outgoing inspection and basic third-party arbitration tests of power transformers, GIS, high-voltage cables, instrument transformers, surge arresters and other AC high-voltage equipment.
Specifications
| Parameter | Specification |
|---|---|
| System Parameters | |
| Compliance Standard | IEC 60270:2015, GB/T 7354-2018, DL/T 848.1-2016 |
| Operating Mode | AC only (50~400Hz test power frequency) |
| Synchronous Channels | 3 independent channels (4/6 channels optional) |
| Sampling Rate | 100MS/s per channel |
| Resolution | 12-bit |
| Detection Sensitivity | 0.1pC (system background noise <0.05pC) |
| Measurement Range | 0.1pC ~ 10000nC |
| Dynamic Range | >80dB |
| Test Capacitance Range | 6pF ~ 250μF |
| Fault Location | TDOA time difference of arrival (cables & GIS) |
| Hardware Architecture | FPGA + DSP dual-core processing |
| Frequency Bands | |
| Standard Frequency Bands | 9 pre-set combinations (10kHz~1MHz) |
| Custom Frequency Bands | 10kHz~1MHz arbitrary combination |
| Anti-Interference Technologies | |
| Time-Domain Windowing | Yes |
| Frequency-Domain Filtering | Yes |
| Pulse Shape Recognition | Yes |
| Phase-Shift Interference Suppression | Yes |
| Background Noise Subtraction | Yes |
| Display & Operation | |
| Display | 12-inch high-resolution industrial touch screen |
| Operation Modes | Touch screen + physical buttons |
| Language Support | Chinese/English bilingual |
| Software Functions | |
| Map Display | PRPD, PRPS, waveform (ellipse/sine/straight line), spectrum, pulse count, trend, 3D map |
| Discharge Type Identification | Yes (automatic) |
| Severity Assessment | Yes (automatic) |
| Fault Location | Yes (TDOA for cables & GIS) |
| Report Generation | Automatic Word/PDF report generation |
| Data Management | Storage, query, comparison, export |
| Remote Control | Yes (via LAN) |
| General Parameters | |
| Power Supply | AC 220V±10%, 45~65Hz |
| Power Consumption | <550W |
| Dimensions | 580×360×320mm (L×W×H) |
| Weight | ~16kg (main unit) |
| Housing | Rugged aluminum alloy engineering chassis |
| Operating Temperature | -10℃ ~ +50℃ |
| Operating Humidity | ≤95% RH (non-condensing) |
| Altitude | ≤3000m |
Applications
Core Test Objects
- Power transformers: 10kV~500kV oil-immersed and dry-type power transformers (three-phase synchronous test)
- GIS equipment: 110kV~500kV GIS and HGIS gas insulated switchgears (multi-chamber synchronous test)
- High-voltage cables: 10kV~220kV XLPE power cables, cable terminals and joints (TDOA fault location)
- Instrument transformers: 10kV~220kV current transformers (CT) and voltage transformers (VT)
- Surge arresters: 10kV~220kV zinc oxide surge arresters
- Other equipment: Capacitors, reactors, bushings, high-voltage switches
Typical Usage Scenarios
- Electrical equipment manufacturers: Batch routine type tests and outgoing quality control
- Transformer manufacturers: Three-phase partial discharge tests during production and delivery
- GIS manufacturers: Multi-chamber synchronous detection and acceptance tests
- Third-party testing institutions: Basic arbitration tests and compliance certification
- Power companies: High-voltage equipment acceptance tests and fault diagnosis
- Power engineering companies: Power grid construction and renovation project acceptance
Advantages
Compliance with International Arbitration Standards
Fully meets IEC 60270:2015 standard, test results are globally recognized and legally valid → can be used as basic arbitration basis for quality disputes
Industry-Leading 3-Channel Synchronous Acquisition
Simultaneously measures three independent points, eliminating the need for repeated testing → improves test efficiency by 50%, ideal for batch factory inspection
Unique TDOA Fault Location Technology
Accurately locates partial discharge sources in cables and GIS equipment → reduces fault location time from days to hours
High Cost-Effective Pure AC Design
Optimized for AC equipment testing, no redundant DC functions → provides 3-channel capability at a price only 20% higher than 2-channel models
Industry-Leading Detection Performance
0.1pC ultra-high sensitivity and >80dB large dynamic range → captures extremely weak partial discharge signals while accurately measuring strong discharge signals
FAQ
Q: Can it perform transformer three-phase partial discharge tests simultaneously?
A: Yes. GDJF-2008's 3-channel synchronous acquisition function allows simultaneous measurement of partial discharge signals from the high-voltage side of three-phase windings. This eliminates the need for repeated testing of each phase separately, reducing test time by two-thirds and improving production efficiency significantly.
Q: Does it support TDOA fault location for cables and GIS?
A: Yes. By arranging three sensors at different positions along the cable or GIS busbar and using the 3-channel synchronous acquisition function, GDJF-2008 can accurately calculate the fault position according to the time difference of partial discharge signals reaching each sensor, with a positioning accuracy of ≤1m.
