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HF-TC-624 Portable Transformer PD Tester
This portable Transformer PD Tester is designed for on-site substation inspection. It collects partial discharge signals, displays PRPD and PRPS spectra clearly, analyzes discharge amplitude and phase relations, and accurately locates internal insulation faults of oil-immersed transformers without power outage.
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Also named handheld partial discharge detector, this Portable Transformer Partial Discharge Detector integrates TEV, UHF, AA, AE and HFCT measurement functions. Compatible with ultrasonic sensors, transient earth voltage (TEV) sensors, UHF sensors and ultrasonic concentrators, it realizes insulation condition inspection and assessment for high-voltage switch cabinets, ring main units, transformers, GIS equipment, overhead lines, cable terminals and cable branch boxes. Equipped with assorted sensors, it flexibly carries out partial discharge testing on various types of electrical equipment.
Alternative Names
Portable Transformer Partial Discharge Detector, Handheld Partial Discharge Detector, Handheld Partial Discharge Tester, Handheld PD Meter, Partial Discharge Detector, Handheld Partial Discharge Inspection Instrument
Discharge Spectrum Display
This Portable Transformer Partial Discharge Detector supports three core spectrum modes: time-domain waveform, PRPD phase-resolved partial discharge pattern and 3D PRPS pattern.
The spectra fully reflect the corresponding relationship among discharge amplitude, phase and time, clearly presenting discharge characteristics of tested equipment. Combined with PRPD patterns, technicians can easily classify and identify different types of partial discharge faults.
The spectra fully reflect the corresponding relationship among discharge amplitude, phase and time, clearly presenting discharge characteristics of tested equipment. Combined with PRPD patterns, technicians can easily classify and identify different types of partial discharge faults.
Application Scope
It is widely applied to measure partial discharge and evaluate insulation performance for the following power equipment:
High-voltage switchgears, ring main units, voltage & current transformers, dry-type & oil-immersed transformers, GIS switchgear, overhead power lines, power cables, cable branch boxes and high-voltage transmission lines.
High-voltage switchgears, ring main units, voltage & current transformers, dry-type & oil-immersed transformers, GIS switchgear, overhead power lines, power cables, cable branch boxes and high-voltage transmission lines.
Supporting Accessories
- External PD Sensors: UHF sensor, HFCT high-frequency current transformer, contact ultrasonic sensor, ultrasonic concentrator
- Data Spectrums: Time-domain waveform, PRPD phase spectrum, 3D PRPS spectrum
Technical Parameters
Sensor Specifications
| TEV Measurement (Transient Earth Voltage) | AA Measurement (Ultrasonic) | UHF Measurement | AE Measurement (Acoustic Emission) | HFCT Measurement (High Frequency Current Transformer) |
|---|---|---|---|---|
| Measuring Range: 0~60 dBmV
Resolution: 1 dB Accuracy: ±1 dB Max pulses per cycle: 1400 Frequency Band: 3~100 MHz |
Measuring Range: -6dBμV ~ 68dBμV
Resolution: 1 dB Accuracy: ±1 dB Center Frequency: 40 kHz |
Frequency Band: 300~2000 MHz
Measuring Range: 0~60 dBmV Accuracy: ＜1 dBmV Frequency Band: 300~2000 MHz |
Measuring Range: -6dBμV ~ 68dBμV
Resolution: 1 dB Accuracy: ±1 dB Frequency Range: 20~200 kHz |
Transfer Impedance: 5mV/mA
Frequency: 1~30 MHz Sensitivity: ≤50 pC |
Hardware Parameters
| Item | Specification |
|---|---|
| Housing Material | ABS Plastic |
| Display Screen | 4.0-inch full-color RGB touch LCD screen |
| Operation Mode | Full-screen touch control |
| Channels | Multi-channel with automatic sensor switching |
| Spectrum Modes | Time-domain waveform, PRPD pattern, 3D PRPS pattern |
| Data Export & Report | Connectable to PC via USB; export data to dedicated analysis software, generate, edit and output test reports with one click |
| Interfaces | USB port (charging & data transmission), Wi-Fi wireless synchronization port, 3.5mm headphone jack, external sensor input port |
| Headphones | Noise-cancelling headphones, ≥8Ω impedance |
| Data Storage | SD card, expandable 16G ~ 64G |
| Charger Input | AC 90-264V universal mains / DC 5V |
| Power Supply | Built-in 3.7V / 5000mAh lithium battery |
| Continuous Working Time | Around 6 hours |
| Operating Environment | Temperature: -20℃ ~ 50℃; Humidity: 20%~85% RH, non-condensing |
| Host Dimension | 210 × 100 × 35 mm |
| Net Weight | 0.4 kg |
Packing List: Portable Transformer PD Tester
| No. | Item Name | Quantity | Unit | Details & Remarks |
|---|---|---|---|---|
| 1 | Main Unit of Portable Transformer PD Tester | 1 | Set | Built-in lithium battery, 4-inch touch screen |
| 2 | TEV Transient Earth Voltage Sensor | 1 | Pc | For cabinet partial discharge testing |
| 3 | UHF Ultra High Frequency Sensor | 1 | Pc | For transformer & GIS PD detection |
| 4 | Contact Ultrasonic Sensor | 1 | Pc | AA/AE acoustic emission measurement |
| 5 | HFCT High Frequency Current Transformer | 1 | Pc | Cable partial discharge pickup |
| 6 | Ultrasonic Wave Concentrator | 1 | Pc | Strengthen ultrasonic signal reception |
| 7 | Noise Cancelling Headphones | 1 | Pair | Listen to on-site discharge sound |
| 8 | USB Charging & Data Cable | 1 | Pc | Charging + data export to computer |
| 9 | Universal AC Power Adapter | 1 | Pc | AC 90-264V wide voltage input |
| 10 | 16GB SD Memory Card | 1 | Pc | Pre-installed for waveform & data storage |
| 11 | English User Operation Manual | 1 | Copy | Complete operation guide & parameter introduction |
| 12 | Factory Calibration Certificate & Inspection Report | 1 | Copy | Export official certification |
| 13 | Shockproof Portable Carry Case | 1 | Pc | Dustproof, anti-collision for outdoor transportation |
FAQ for Portable Transformer PD Tester
Q1: What functions does this Portable Transformer PD Tester support?
A: It integrates TEV, UHF, AA, AE and HFCT five measurement modes. Equipped with different matched sensors, it can detect partial discharge faults of transformers, high-voltage switch cabinets, GIS, power cables and other high-voltage electrical equipment, and analyze discharge characteristics via professional spectra.
Q2: What partial discharge spectrums can the device display?
A: Three mainstream spectrum modes are available: time-domain signal waveform, PRPD phase-resolved partial discharge pattern and 3D PRPS pattern. They intuitively show the correlation of discharge amplitude, phase and time, helping users quickly judge discharge types and fault degrees.
Q3: Which sensors are configured for the tester?
A: Standard accessories include TEV transient earth voltage sensor, UHF ultra-high frequency sensor, contact ultrasonic sensor, ultrasonic concentrator and HFCT high-frequency current transformer, covering almost all conventional on-site PD testing scenarios.
Q4: Is it convenient to export test data and generate reports?
A: Yes. Test waveforms and data can be stored on SD card. After connecting the instrument to a computer via USB cable, you can export all data to dedicated PC software, edit and generate formal test reports with one click.
Q5: What is the battery life of this handheld PD detector?
A: Built-in 3.7V 5000mAh large-capacity lithium battery, continuous working time reaches about 6 hours under normal testing conditions. It supports wide-voltage AC charging and DC power supply for flexible use indoors and outdoors.
Q6: Can the instrument work normally in harsh field environments?
A: The working temperature ranges from -20℃ to 50℃, applicable humidity is 20%~85%RH without condensation. The ABS shell is sturdy and wear-resistant, perfectly adapting to outdoor substation inspection environments.
Q7: What is the size and weight of the main unit? Is it easy to carry around?
A: Host size: 210×100×35 mm, net weight only 0.4 kg. Compact and lightweight design, easy to hold and carry for long-distance on-site patrol inspection.
Q8: How to operate the tester? Is professional training required?
A: Adopts 4-inch full-color touch screen with full touch operation. The menu interface is concise and intuitive. Technicians can master basic measurement operations quickly without complicated professional training.
Q9: What is the accuracy of each measurement channel?
A: The resolution of TEV, AA, AE channels is 1dB with accuracy ±1dB; UHF detection accuracy is less than 1dBmV; HFCT features high sensitivity ≤50pC, fully meeting power industry preventive test standards.
Q10: Can it test both oil-immersed transformers and dry-type transformers?
A: Absolutely. Combined with UHF and ultrasonic sensors, it can accurately detect internal partial discharge hidden dangers of dry-type transformers and oil-immersed power transformers simultaneously.
Q11: Does the device support wireless functions?
A: Built-in Wi-Fi module supports wireless time synchronization and data transmission; it is also equipped with a 3.5mm headphone jack, allowing inspectors to listen to real-time discharge sounds on site with noise-cancelling headphones.
Q12: What storage capacity does the instrument support?
A: It adopts SD card storage, with a standard 16GB memory card, expandable up to 64GB, which can store massive test waveforms and historical detection data without data loss after shutdown.
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