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GDFR-AD Intelligent AC/DC High Voltage Reference Calibration System
GDFR-AD Intelligent AC/DC High Voltage Reference Calibration System with Shielded RC Divider Unit, Automatic Calibration Software, for DC High Voltage Generator Verification and AC/DC Voltage Divider Metrological Calibration in Laboratories and Manufacturing Plants.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
GDFR-AD is a professional reference-grade high voltage calibration platform designed for national metrology institutes, third-party testing laboratories, high voltage equipment manufacturers and power research academies. It serves as a traceable voltage standard for verification of DC high voltage generators (DC hipot testers) and calibration of AC/DC digital voltage dividers, strictly complying with IEC 60060-1, IEC 61010-1 and relevant national metrological specifications.
The system adopts an equipotential-shielded resistance-capacitance (RC) divider architecture with low-temperature-coefficient precision components, ensuring excellent long-term stability and ultra-low measurement uncertainty. It is equipped with a high-speed digital acquisition unit and dedicated PC-based calibration software, realizing fully automatic test flow: step voltage boosting, synchronous data sampling, error calculation, linearity evaluation, ripple factor analysis and standardized calibration report generation.
Multiple rated voltage grades (50kV / 100kV / 150kV / 200kV / 300kV) are available for customization. The low-partial-discharge design supports long-time continuous operation in laboratory environments. With comprehensive safety interlocks including zero-start interlock, over-voltage and over-current protection, it provides a safe, efficient and traceable high voltage metrology solution for routine calibration, type test and factory quality inspection.
Specifications
| Parameter | Specification |
|---|---|
| System Composition | Reference-grade RC divider unit + digital acquisition host + PC calibration software |
| Rated Voltage Options | 50kV / 100kV / 150kV / 200kV / 300kV (customizable) |
| DC Measurement Accuracy | ±0.05% FS ~ ±0.1% FS |
| AC Power-Frequency Accuracy (50/60Hz) | ±0.1% FS ~ ±0.2% FS |
| Standard Voltage Ratio | 10000:1 (custom ratios available on request) |
| Temperature Coefficient | ≤ 25 ppm/℃ |
| Annual Ratio Stability | ≤ 0.05% |
| DC Ripple Test | Supported, measures ripple factor of DC HV generators |
| Calibration Items | Voltage indication error, linearity, output stability, ripple coefficient, ratio repeatability |
| Operation Modes | Manual step calibration / Fully automatic programmable calibration |
| Communication Interface | RS485 / Ethernet |
| Software Functions | Automatic test flow, real-time curve display, data management, standard report export |
| Protection Functions | Zero-voltage start interlock, over-voltage, over-current, emergency stop, sound-light HV alarm |
| Partial Discharge Level | Low PD design, suitable for laboratory continuous operation |
| Input Power Supply | AC 220V ± 10%, 50/60Hz |
| Operating Temperature | 0℃ ~ +40℃ (calibration environment: 20℃±5℃ recommended) |
| Ambient Humidity | ≤ 85% RH (non-condensing) |
| Installation Form | Vertical column type, laboratory fixed installation |
Applications
Core Calibration Objects
- Portable & bench-top DC high voltage generators (DC hipot testers)
- Digital AC/DC high voltage dividers of various voltage grades
- Medium-voltage withstand test equipment and HV power supplies
- HV measuring instruments in production lines and testing laboratories
Typical Application Scenarios
- National & provincial metrology institutes: high voltage standard establishment, value traceability and external calibration services
- High voltage equipment manufacturers: incoming inspection of HV measuring instruments, finished product factory calibration and quality control
- Third-party testing laboratories: HV test equipment periodic verification, engineering acceptance and arbitration test
- Power research academies: laboratory standard device maintenance, test data accuracy assurance
- Quality supervision departments: product quality spot check and metrological supervision inspection
Advantages
Reference-Grade 0.05% Measurement Accuracy
Shielded RC divider + low-temperature-drift components → ultra-high measurement accuracy and stability, can be used as laboratory secondary voltage reference standard
One System Dual-Use High Cost Performance
Covers DC hipot verification and voltage divider calibration → reduces repeated equipment investment, improves laboratory space utilization
Fully Automatic Efficient Calibration Flow
Software-controlled automatic boosting, data recording and report generation → reduces manual operation error, improves calibration efficiency by 70%
Customizable Voltage Grades
50kV to 300kV optional, custom ratio and function expansion → flexible matching with different laboratory capacity and business scope
Complete Safety & Reliability Design
Zero interlock + multi-protection + low PD design → ensures safe and stable long-term operation in laboratory environment
Standardized Data Traceability System
Database management + standard report template → meets metrology archive management specifications, supports data traceability and audit
FAQ
Q: What accuracy grade does GDFR-AD reach, and can it be used as a laboratory reference standard?
A: The DC measurement accuracy of GDFR-AD reaches ±0.05% FS, with annual stability better than 0.05% and ultra-low temperature drift. It can be used as a secondary reference standard in provincial and municipal metrology institutes and enterprise laboratories for value traceability and calibration of lower-grade HV measuring instruments. The system is delivered with a CNAS calibration certificate, and the measurement results are traceable to national metrological benchmarks.
Q: Can it calibrate DC hipot testers and AC voltage dividers of different brands?
A: Yes. GDFR-AD is a general-purpose high voltage reference measuring system, not limited by instrument brands. It can calibrate all brands of DC high voltage generators and AC/DC voltage dividers within the corresponding voltage range, with test methods fully complying with IEC and national standards.
Q: Can the voltage rating be customized according to our laboratory needs?
A: Yes. The standard series provides 50kV / 100kV / 150kV / 200kV / 300kV options. We can also customize higher voltage grades, special voltage ratios and extended functions such as impulse voltage measurement according to customer's actual test requirements to meet different laboratory construction needs.
Q: Does the system support automatic calibration and report generation?
A: Yes. The matching special calibration software supports fully automatic test flow. Users only need to set voltage steps and stay time, and the system will automatically complete voltage boosting, data acquisition, error calculation and report generation without manual recording and calculation. It has built-in standard calibration report templates, which can be exported and printed with one click, greatly improving calibration work efficiency.
