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- Description
- Specifications
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Description
The GDRB-F Transformer Winding Deformation Tester is a professional dual-method integrated diagnostic device for transformer winding mechanical condition assessment. It adopts SFRA Sweep Frequency Response Analysis + Short-Circuit Impedance Comparison Method, two mainstream international standard detection technologies, to accurately identify winding distortion, displacement, collapse, loose turns, inter-turn short circuit and residual stress damage caused by lightning impact, short-circuit impact and transportation vibration.
With ultra-wide frequency sweep range 1Hz~2MHz, high-precision waveform acquisition, intelligent correlation coefficient calculation and characteristic spectrum comparison, it realizes non-destructive, outage-free rapid diagnosis of transformer winding structural health. Fully compliant with IEC 60076-18, IEEE C57.12.90 & GB/T 1094.7, it is widely used in transformer factory inspection, substation acceptance, short-circuit fault analysis and routine preventive maintenance worldwide.
Specifications
| Parameter Category | Specification |
| Model | GDRB-F |
| Detection Methods | SFRA Sweep Frequency Response Analysis + Short-Circuit Impedance Method |
| SFRA Frequency Range | 1Hz ~ 2MHz, multi-band adjustable sweep |
| Sampling Resolution | 16bit high-speed synchronous sampling |
| Correlation Analysis | Full-band & segmented correlation coefficient automatic calculation |
| Impedance Test Accuracy | ≤0.2% |
| Test Object | Power transformer winding, reactor, large inductive equipment |
| Working Mode | Fully automatic sweep test + manual analysis mode |
| Display | 7-inch high-brightness color touch LCD |
| Data Storage | Large-capacity historical curve archive, long-term traceability |
| Data Export | USB, PDF/Excel standard test report export |
| Power Supply | AC 220V±10%, 50/60Hz |
| Operating Temperature | -20℃ ~ +50℃ |
| Humidity | ≤85% RH non-condensing |
| Protection Grade | IP40 |
| Net Weight | ~7.5kg |
| Compliance Standards | IEC 60076-18, IEEE C57.12.90, GB/T 1094.7, CE |
Applications
Test Objects
· Oil-immersed & dry-type power transformers, distribution transformers 10kV~500kV
· Generator step-up transformers, traction transformers, new energy wind/photovoltaic transformers
· Shunt reactors, grounding transformers and other large inductive power equipment
· Winding damage diagnosis after transformer short-circuit impact, lightning surge impact
Application Scenarios
· Factory type test & outgoing quality inspection of new transformers
· Substation handover acceptance and installation inspection
· Post-fault diagnosis after power grid short-circuit accident
· Routine preventive maintenance and winding health status tracking
· Transportation damage inspection before and after transformer transfer
· Long-term aging monitoring and hidden danger prediction of in-service transformers
Industries
Power grid utilities, transformer manufacturers, rail transit, new energy power stations, industrial power plants, third-party testing and certification institutions
Advantages
Strict IEC International Standard Compliance
Designed in full accordance with IEC 60076-18 Transformer SFRA Test Standard, IEEE C57.12.90, test conclusions globally recognized, meeting grid access and international project acceptance requirements.
Dual SFRA + Impedance Joint Diagnosis
Single machine integrates two mainstream winding detection methods, complementary advantages, far higher accuracy and reliability than single SFRA instrument, effectively avoid missed diagnosis and false alarm.
Ultra-Wide 1Hz~2MHz Frequency Coverage
Covers all low-frequency, medium-frequency and high-frequency characteristic bands of transformer winding resonance, fully captures subtle structural changes of winding, sensitive to early micro-deformation faults.
Non-Destructive Live On-Site Detection
No power outage, no disassembly, fast on-site testing, does not affect normal power supply operation, greatly improves maintenance efficiency and reduces power loss.
Intelligent Automatic Fault Judgment
Built-in professional diagnosis algorithm, automatically calculate correlation coefficient, compare characteristic curves, grade deformation degree and give maintenance suggestions, low operation threshold for field technicians.
Long-Term Asset Health Tracking
Store full-life SFRA characteristic fingerprints, track winding structural changes year by year, realize predictive maintenance, avoid sudden transformer breakdown and major power outages.
Portable Rugged Field Adaptability
Compact lightweight design, strong anti-interference, wide temperature adaptation, stable and reliable in complex outdoor substation electromagnetic environment.
FAQ
Q: What standards does GDRB-F comply with?
A: Fully compliant with IEC 60076-18 Transformer SFRA Test Standard, IEEE C57.12.90 and national winding deformation test specifications, diagnosis results internationally recognized.
Q: Why adopt SFRA + impedance dual detection?
A: SFRA sensitively reflects winding micro-structure deformation; impedance reflects overall electrical parameter change. Dual mutual verification greatly improves diagnosis accuracy and avoids false judgment caused by single method.
Q: Does transformer need power outage for testing?
A: No. Adopt non-destructive passive signal detection, no high-voltage output, can test energized transformers on site without shutdown, does not affect normal power supply.
Q: What winding faults can it detect?
A: Accurately diagnose winding displacement, collapse, inter-turn short circuit, loose turns, lead deformation, clamping looseness, hidden damage after short-circuit impact and transportation damage.
Q: Can it compare historical data for long-term tracking?
A: Yes. It stores full-life SFRA characteristic fingerprints, supports multi-year curve comparison, tracks winding aging and deformation trends, and realizes predictive maintenance.
Q: Warranty & after-sales service?
A: 1-year whole machine warranty, lifetime technical support, on-site commissioning, calibration and professional operation training.
