Product Overview
The MOEORW-AEC Contact Ultrasonic Partial Discharge Calibration System is an engineering-grade, fully automated platform designed to verify, calibrate, and test the performance of contact-type acoustic partial discharge detectors.Utilizing the pulse-excitation comparison method, the system establishes a highly stable acoustic transmission link through a precision-machined heavy steel block to calibrate sensors across a wide frequency spectrum. The system has been field-proven in prominent Electric Power Research Institutes and is a vital baseline infrastructure for testing instruments deployed on GIS, switchgear, and power transformers. With full upper-computer software integration, it eliminates human error by delivering self-adaptive loop topologies, adaptive sweep sequences, and automatic test report generation.
Application
Power Grid Metrology & Testing Centers: Ideal for State Grid and China Southern Grid Electric Power Research Institutes (电科院) or regional testing labs to conduct centralized material evaluation and regular calibration of field-deployed instruments.
Third-Party Calibration Laboratories: Enables compliance labs (SGS, Eurofins, national testing institutes) to verify Acoustic Emission (AE) and partial discharge equipment against IEC and corporate metrics.
PD Instrumentation Manufacturers: Serves as a definitive R&D and QA/QC end-of-line test station for factories producing portable or online contact-type ultrasonic PD inspectors.
Heavy Industrial Electrical Substation Maintenance: Used by maintenance teams in generation and distribution facilities to verify the sensitivity of their testing assets before executing critical offline/online switchgear mapping.
The system interfaces via GPIB/LXI buses to allow the software to drive signal generators, configure oscilloscopes, capture waveform datasets, and switch topologies seamlessly.
▷Capable of performing complete validation profiles under national and grid enterprise technical codes, including:
▷Sensor Absolute/Average Sensitivity Levels & Curve Plotting
▷Whole-Instrument Detection Frequency Bandwidth (Upper/Lower Cutoff)
▷Minimum Detection Sensitivity & Signal-to-Noise Ratio (SNR)
▷Dynamic Response Range & Whole-System Linearity Error Calibration
▷Multi-Channel Consistency (Amplitude and \(\le 20\mu\text{s}\) Time Deviations)
▷Long-Term Operational Stability & Repeatability Calculations
All embedded reference sensors are fully traceable to national metrology standards. The massive, highly polished \(0.6\mu\text{m}\) steel propagation ensures zero internal boundary interference and perfect sound field replication.
Built-in algorithm modules auto-calculate primary resonance peaks, standard deviations, and curve fitting. Reports are automatically generated using standardized State Grid corporate layouts, containing original time-domain wave plots and diagnostic verdicts.
The system components form a closed-loop measurement chain via standard communication interfaces:
| Hardware Component | Technical Specifications |
|---|---|
| Calibration Software | Integrated upper-computer control, adaptive matrix routing, automated State Grid report template output. |
| Frequency Range | 10 kHz to 1 MHz (Calibrates sensor responsiveness from 20 kHz to 200 kHz with customizable step intervals). |
| Standard Reference Sensors | G40 (for gas-insulated/GIS equipment testing) & G150 (for oil-immersed power equipment testing). • Peak Sensitivity:≥60 dB • Average Sensitivity: ≥50 dB |
| Contact (Propagation Block) | Solid Carbon Steel (A36 or equivalent). • Dimensions: ≥Φ500mm*200mm thickness • Weight: ~400 kg • NDT Quality: Ultrasonic testing at 2.5 MHz (Defect echo ≤ 10% of bottom echo). |
| Arbitrary Waveform Generator | Bandwidth: 120 MHz | Sampling Rate: 1.2 GSa/s. |
| High-Voltage Power Amplifier | Bandwidth: 3 MHz | Output Voltage: 1V to 200V adjustable. |
| Digital Oscilloscope | Bandwidth: 200 MHz | Sampling Rate: 2 GSa/s | 4 Channels. |
| AE Pre-Amplifier | Gain options: 20 dB / 40 dB switchable. |
| Support Platform | Heavy-duty steel rigid framework with integrated Optical Vibration Isolation, height adjustments, and mechanical sensor clamping (static force ≥ 9.8N). |
We provide you with free consultation services
Engineers provide guidance for installation and commissioning
Technicians can provide on-site maintenance services and receive regular training
Perfect technical consulting service system
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Address: China Optics Valley No. 1, Fenghuangyuan 2nd Road, Donghu High-tech Development Zone, Wuhan City
whmoen@163.com
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