EN
GDFR-C1 Series AC/DC High Voltage Divider (50kV-500kV)
GDFR-C1 AC/DC HV divider: 50kV-500kV optional, RC equipotential shielding, AC/DC dual use, dual range, standard 1.5%AC/1.0%DC accuracy, split design, digital direct reading, coaxial cable, for field HV test, meets IEC 60358-4.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
GDFR-C1 series is a professional split-type resistive-capacitive high voltage divider designed for on-site power frequency AC and DC high voltage measurement, withstand test system calibration and HV equipment verification in substations, power research institutes, high-voltage equipment manufacturers and third-party testing institutions. It strictly complies with GB/T 19749.4-2023, IEC 60358-4:2018 and DL/T 846.1-2016 standards, adopting advanced equipotential shielding structure and high-precision RC voltage dividing network that ensures stable measurement accuracy and strong anti-interference performance in complex field environments.
The series covers 50kV to 500kV multiple rated voltage specifications, supporting both AC and DC high voltage measurement with one single device. Its innovative dual-range design improves low-voltage section measurement accuracy, covering both daily routine test and high-voltage withstand test scenarios. The instrument adopts a split structure consisting of a high-voltage divider body and a low-voltage digital display meter, connected by a high-quality coaxial cable, ensuring operator safety during high-voltage tests. The digital display meter provides direct reading of voltage values without manual conversion, significantly improving test efficiency.
Specifications
| Parameter | 50kV | 100kV | 150kV | 200kV | 300kV | 500kV |
|---|---|---|---|---|---|---|
| Rated Voltage (AC/DC) | 50kV | 100kV | 150kV | 200kV | 300kV | 500kV |
| Accuracy (Standard Grade) | AC: ±1.5% FS; DC: ±1.0% FS | Same as left | Same as left | Same as left | Same as left | Same as left |
| Accuracy (Optional Grade G) | AC: ±1.0% FS; DC: ±0.5% FS | Same as left | Same as left | Same as left | Same as left | Same as left |
| Accuracy (Optional Grade H) | AC: ±0.5% FS; DC: ±0.5% FS | Same as left | Same as left | Same as left | Same as left | Same as left |
| Voltage Ratio | 1000:1 / 10000:1 | 1000:1 / 10000:1 | 1000:1 / 10000:1 | 1000:1 / 10000:1 | 1000:1 / 10000:1 | 1000:1 / 10000:1 |
| Capacitance | 500pF | 250pF | 160pF | 300pF | 200pF | 100pF |
| Dual Range | Low: 0-20kV High: 20-50kV | Low: 0-20kV High: 20-100kV | Low: 0-200kV High: 200-150kV | Low: 0-200kV High: 200-200kV | Low: 0-200kV High: 200-300kV | Low: 0-200kV High: 200-500kV |
| Frequency Response | DC ~ 300Hz | DC ~ 300Hz | DC ~ 300Hz | DC ~ 300Hz | DC ~ 300Hz | DC ~ 300Hz |
| Coaxial Cable Length | 4m | 4m | 6m | 6m | 10m | 10m / 20m optional |
| Insulation Filling | Polyurethane foam | Polyurethane foam | Polyurethane foam | Polyurethane foam | Polyurethane foam | Polyurethane foam |
| Display Mode | LCD digital direct reading | LCD digital direct reading | LCD digital direct reading | LCD digital direct reading | LCD digital direct reading | LCD digital direct reading |
| Operating Temperature | 0℃ ~ +40℃ | 0℃ ~ +40℃ | 0℃ ~ +40℃ | 0℃ ~ +40℃ | 0℃ ~ +40℃ | 0℃ ~ +40℃ |
| Humidity | ≤85% RH (non-condensing) | ≤85% RH | ≤85% RH | ≤85% RH | ≤85% RH | ≤85% RH |
| Body Height | 610mm | 970mm | 1420mm | 1475mm | 1750mm | ~2800mm |
| Body Diameter | 220×235mm | 220×235mm | 290×300mm | 290×300mm | 290×300mm | ~400mm |
| Weight | ~6.5kg | ~9.5kg | ~12.5kg | ~14.5kg | ~27kg | ~120kg |
Applications
Core Application Scenarios
- On-site HV measurement: Substation AC/DC high voltage measurement, equipment live detection
- Withstand test calibration: Calibration and verification of AC/DC hipot testers, impulse voltage generators
- HV equipment testing: Factory test and type test of transformers, arresters, switchgears and other HV equipment
- Metrological verification: Third-party testing institutions, metrology institutes HV meter calibration
Typical Users
- Power utilities: Substation maintenance teams, power test institutes, high-voltage test departments
- HV equipment manufacturers: Transformer factories, arrester factories, switchgear factories, hipot tester manufacturers
- Third-party testing institutions: Metrology institutes, power engineering testing companies, certification bodies
- Research institutes: University high-voltage laboratories, power research institutions
Advantages
Compliance with International & National Standards
Fully meets IEC 60358-4, GB/T 19749.4, DL/T 846.1 → measurement data is traceable and legally valid for metrological verification
Industry-Leading Equipotential Shielding Technology
Eliminates stray capacitance and electromagnetic interference → stable measurement accuracy in complex field environments, small data dispersion
AC/DC Dual Use & Dual Range Design
One device covers both AC and DC HV measurement, dual range improves accuracy → reduces equipment purchase cost by 50%
Split-Type Safety Structure
Physical isolation between operator and high voltage → eliminates electric shock hazards and ensures test safety
Digital Direct Reading & Simple Operation
No manual conversion, one-key operation → reduces operator skill requirements and improves test efficiency by 60%
Multi-Specification & Multi-Accuracy Options
50kV to 500kV full coverage, three accuracy grades optional → meets different application scenarios from routine test to metrological calibration
Lightweight & Durable Design
Polyurethane foam filling, corona-proof structure, light weight → suitable for both laboratory fixed calibration and on-site mobile testing
FAQ
Q: What is the difference between RC divider and pure resistive / pure capacitive divider?
A: Pure resistive dividers have large heating and poor stability under AC conditions, while pure capacitive dividers cannot measure DC voltage. RC (resistive-capacitive) dividers combine the advantages of both, supporting both AC and DC high voltage measurement, with good frequency response, low temperature drift and high stability, making them the most widely used general-purpose high voltage measurement equipment.
Q: Can GDFR-C1 be used to calibrate hipot test sets?
A: Yes. GDFR-C1 series is a standard high voltage measurement equipment traceable to national metrological standards. It can be used to calibrate the output voltage accuracy of AC hipot testers, DC hipot testers and impulse voltage generators, and is an essential standard equipment for metrological verification and factory quality control.
Q: What is the purpose of the dual-range design?
A: The dual-range design can significantly improve the measurement accuracy of low-voltage sections. For example, when measuring 10kV voltage with a 100kV single-range divider, the relative error is large. With dual-range design, the 0-20kV low range can be used for measurement, which greatly improves the accuracy and meets the test requirements of both low-voltage routine inspection and high-voltage withstand test.
Q: How to calibrate the high voltage divider?
A: The high voltage divider should be calibrated with a higher-grade standard high voltage source or standard divider in a professional metrology laboratory. The calibration items include voltage ratio error, linearity error, AC/DC error and stability. According to metrological management regulations, the calibration cycle is generally 12 months.
