EN
GSA-C/MPDC/RTC 3-in-1 SF₆ Gas Comprehensive Tester with CF₄ Detection
GSA-C/MPDC/RTC Digital Intelligent 3-in-1 SF₆ Gas Comprehensive Tester with CF₄ Detection, Integrated Humidity (Dew Point), Purity and Decomposition Products (SO₂/H₂S/CO/CF₄) Measurement, Imported Sensors, Built-in Pump-Back System, for 10kV-500kV SF₆-Insulated Equipment On-Site Condition Assessment.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GSA-C/MPDC/RTC is a professional, field-optimized 3-in-1 SF₆ gas comprehensive testerexclusively designed for fast and accurate condition assessment of SF₆-insulated high-voltage equipment. It fully complies with DL/T 506-2018, DL/T 941-2021 and IEC 60480:2019 standards, adopting world-class imported sensors to ensure reliable and accurate test results.
The instrument integrates humidity (dew point) measurement, SF₆ purity measurement and decomposition products measurement (SO₂/H₂S/CO/CF₄) into one unit. One-time sampling completes all test items, reducing gas consumption by 70% compared to using three separate instruments. Its innovative built-in pump-back system can pump the tested gas back into the equipment, minimizing SF₆ emissions and environmental pollution. Equipped with a 5-inch high-brightness true-color touch screen and intuitive graphical interface, it supports real-time display of all parameters and automatic defect diagnosis. With a built-in 7.4V/10Ah large-capacity lithium battery, it can work continuously for more than 8 hours, making it ideal for all-day on-site inspections. Ideal for daily inspection, preventive maintenance, defect diagnosis and acceptance test of GIS, SF₆ circuit breakers, power transformers, instrument transformers and other SF₆-insulated equipment.
Specifications
| Parameter | Specification |
|---|---|
| Humidity (Dew Point) Measurement | |
| Sensor Type | Finland Vaisala capacitive humidity sensor |
| Measurement Range | -80℃ ~ +20℃ (dew point) |
| Accuracy | ±2℃ (-60℃ ~ +20℃), ±3℃ (-80℃ ~ -60℃) |
| Resolution | 0.1℃ |
| Response Time | ≤60 seconds (63% step change) |
| SF₆ Purity Measurement | |
| Sensor Type | Germany Smart-GAS NDIR infrared sensor |
| Measurement Range | 0 ~ 100% SF₆ |
| Accuracy | ±0.2% FS |
| Resolution | 0.1% |
| CF₄ Measurement | |
| Sensor Type | Germany Smart-GAS NDIR infrared sensor |
| Measurement Range | 0 ~ 1000ppm |
| Accuracy | ±5% of reading ± 2ppm |
| Resolution | 0.1ppm |
| Decomposition Products Measurement | |
| Sensor Type | Switzerland Membrapor electrochemical sensors |
| SO₂ Range | 0 ~ 1000ppm |
| SO₂ Accuracy | ±5% of reading ± 2ppm |
| H₂S Range | 0 ~ 200ppm |
| H₂S Accuracy | ±5% of reading ± 2ppm |
| CO Range | 0 ~ 500ppm |
| CO Accuracy | ±5% of reading ± 5ppm |
| Resolution | 0.1ppm for all |
| General Parameters | |
| Sampling Method | Built-in pump suction |
| Flow Rate | 0.2 ~ 1.0L/min (adjustable) |
| Gas Consumption | ~2L per complete test |
| Pump-Back System | Yes (built-in) |
| Automatic Correction | Temperature and pressure correction to 20℃, 0.1MPa |
| Defect Diagnosis | Yes (built-in expert system) |
| Display | 5-inch high-brightness true-color touch screen |
| Data Storage | 1000 groups (with time stamp, power-off protection) |
| Data Export | USB interface, PDF/Excel report generation |
| Language Support | Chinese/English bilingual |
| Power Supply | Built-in 7.4V/10Ah lithium battery + AC 220V±10%, 50Hz charger |
| Battery Life | >8 hours continuous operation |
| Charging Time | ~4 hours (full charge) |
| Protection Functions | Over-pressure, Over-current, Low battery, Pump protection, Electromagnetic interference protection |
| Dimensions | 360×260×150mm (L×W×H) |
| Weight | ~4.5kg (including battery) |
| Operating Temperature | -10℃ ~ +50℃ |
| Operating Humidity | ≤90%RH (non-condensing) |
| Altitude | ≤2000m |
| Compliance | DL/T 506-2018, DL/T 941-2021, IEC 60480:2019, GB/T 8905-2012 |
Applications
Core Test Objects
- GIS gas insulated switchgear: 10kV-500kV GIS and HGIS equipment
- SF₆ circuit breakers: Live tank and dead tank SF₆ circuit breakers
- SF₆ transformers: SF₆-insulated power transformers
- SF₆ instrument transformers: SF₆-insulated CTs and VTs
- SF₆ load switches: 10kV-35kV SF₆ load switches and disconnectors
- SF₆ gas cylinders: SF₆ gas quality inspection before filling
Typical Usage Scenarios
- Power companies: Daily on-site inspection and preventive maintenance of substation SF₆ equipment
- GIS manufacturing plants: Factory type tests and outgoing quality control
- Transformer manufacturing plants: SF₆-insulated transformer production and testing
- Third-party testing institutions: On-site acceptance and compliance testing
- Power plants: Generator transformer and auxiliary equipment gas quality inspection
- Industrial and mining enterprises: SF₆ equipment routine inspection and maintenance
Advantages
Compliance with International Standards
Fully meets DL/T 506-2018, DL/T 941-2021 and IEC 60480:2019 standards → test results are globally recognized
3-in-1 Integrated Design
One instrument completes all three tests, one-time sampling → reduces test time by 70%, saves gas consumption by 70%
World-Class Imported Sensors
Vaisala humidity, Smart-GAS purity/CF₄, Membrapor decomposition products sensors → ensures long-term stability and accuracy of test results
Built-in CF₄ Detection
Unique CF₄ decomposition product detection → can identify early partial discharge defects that cannot be detected by traditional testers
Built-in Pump-Back System
Pumps tested gas back into equipment → minimizes SF₆ emissions, protects the environment, saves gas cost
Automatic Defect Diagnosis
Built-in expert system, automatically analyzes test results and gives defect level → reduces operator skill requirements, eliminates subjective judgment errors
Portable & Long Battery Life
4.5kg lightweight design with 8-hour battery life → ideal for all-day on-site inspections
Comprehensive Safety Protection
Multiple protection layers + strong anti-interference ability → ensures safe and reliable operation in harsh field environments
FAQ
Q: What is the difference between GSA-C/MPDC/RTC and traditional single-parameter SF₆ testers?
A: Traditional testing requires three separate instruments (humidity tester, purity tester, decomposition products tester) and multiple sampling operations, which is time-consuming and consumes a lot of SF₆ gas. GSA-C/MPDC/RTC integrates all three functions into one instrument, completes all tests with one sampling, reduces test time by 70% and gas consumption by 70%. It also has a built-in pump-back system to minimize SF₆ emissions.
Q: Why is CF₄ detection important?
A: CF₄ is an important decomposition product of SF₆ gas under partial discharge and overheating conditions. It appears earlier than SO₂ and H₂S in the early stage of equipment defects. CF₄ detection can identify early partial discharge defects that cannot be detected by traditional testers, enabling early warning and preventive maintenance to avoid major accidents.
Q: Can the tested gas be pumped back into the equipment?
A: Yes. The instrument has a built-in pump-back system that can pump the tested gas back into the equipment after testing. This not only minimizes SF₆ emissions and environmental pollution, but also saves gas purchase costs.
Q: Does it support automatic temperature and pressure correction?
A: Yes. The instrument has built-in temperature and pressure sensors, which can automatically correct the test results to standard conditions (20℃, 0.1MPa), making it easy to compare test results with standard values.
Q: How long does the battery last?
A: The built-in 7.4V/10Ah large-capacity lithium battery can work continuously for more than 8 hours, which is sufficient for a full day of on-site testing. The charging time is about 4 hours.
