EN
GDJD-5A SF6 Gas Density Relay Calibrator
GDJD-5A Digital Intelligent SF6 Gas Density Relay Calibrator with ARM+DSP Dual-Core Architecture, 0.2% High Accuracy, On-Site Calibration Without Disassembly, Automatic Temperature Compensation, for SF6 Circuit Breaker, GIS and Transformer Density Relay Testing.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GDJD-5A is a professional-grade, fully automatic portable SF6 gas density relay calibratorexclusively designed for testing and calibration of SF6 gas density relays, density gauges and pressure gauges in power systems. It fully complies with DL/T 259-2023, JB/T 10889-2008 and IEC 60480-2004 standards, adopting high-precision imported pressure and temperature sensors to ensure accurate and reliable measurement results.
The instrument features a unique on-site calibration design that allows testing of density relays without disassembly or SF6 gas recovery, greatly improving test efficiency and safety. Its innovative ARM+DSP dual-core architecture enables high-speed data acquisition and real-time signal processing. With one-click automatic test function, it can complete alarm action value, alarm return value, locking action value and locking return value tests in sequence, automatically convert the measured pressure to the standard value at 20℃, and intelligently judge whether the test results are qualified.
Specifications
| Parameter | Specification |
|---|---|
| System Parameters | |
| Compliance Standard | DL/T 259-2023, JB/T 10889-2008, IEC 60480-2004, GB/T 22065-2008 |
| Control Architecture | ARM + DSP dual-core |
| Operating System | Embedded real-time operating system |
| Display | 5.7-inch 640×480 color touch screen |
| Data Storage | 1000 groups test results |
| Data Export | USB 2.0 (Excel format) |
| Pressure Measurement | |
| Pressure Range | -0.1MPa ~ 1.0MPa |
| Accuracy | ±0.2% FS |
| Resolution | 0.0001MPa |
| Pressure Mode | Relative pressure, absolute pressure |
| Temperature Measurement | |
| Temperature Range | -40℃ ~ +80℃ |
| Accuracy | ±0.5℃ |
| Resolution | 0.1℃ |
| Test Functions | |
| Test Items | Alarm action value, alarm return value, locking action value, locking return value |
| Automatic Temperature Compensation | Yes (20℃ standard pressure conversion) |
| Intelligent Judgment | Yes (qualified/unqualified) |
| Printer | |
| Type | High-speed thermal printer |
| Paper Width | 58mm |
| Power Supply | |
| External Power | AC 220V±10%, 50Hz |
| Built-in Battery | Lithium-ion battery, 11.1V/8000mAh |
| Battery Life | ≥6 hours continuous operation |
| Charging Time | ~3 hours (full charge) |
| Physical Parameters | |
| Dimensions | 320×240×150mm (L×W×H) |
| Weight | ~5kg (including battery) |
| Housing | Rugged engineering plastic |
| Protection Grade | IP54 |
| Operating Temperature | -10℃ ~ +50℃ |
| Storage Temperature | -20℃ ~ +60℃ |
| Humidity | ≤90% RH (non-condensing) |
Applications
Core Test Objects
- SF6 gas density relays: Spring tube type, bellows type, capacitive type density relays for SF6 circuit breakers, GIS, transformers and switchgears
- Density gauges: SF6 gas density gauges with temperature compensation
- Pressure gauges: Ordinary pressure gauges and precision pressure gauges for SF6 equipment
Typical Usage Scenarios
- Power companies: Substation preventive maintenance, SF6 equipment regular inspection, fault troubleshooting
- Power engineering companies: SF6 equipment installation and commissioning, construction quality acceptance
- SF6 equipment manufacturers: Factory quality control, type tests, after-sales service
- Third-party testing institutions: SF6 equipment performance testing, quality arbitration
- Industrial enterprises: Internal SF6 equipment testing and maintenance
Advantages
Compliance with Latest International Standards
Fully meets DL/T 259-2023 Chinese power industry standard and IEC 60480 international standard → test results are recognized by power systems worldwide
Industry-Leading 0.2% Measurement Accuracy
High-precision imported sensors and digital signal processing technology → ensures the reliability of density relay test results and SF6 equipment operation safety
Unique On-Site Calibration Technology
No disassembly, no power outage, no gas recovery → reduces test time by 80% and eliminates safety risks associated with equipment disassembly
One-Click Fully Automatic Operation
Automatically completes all test items and generates reports → reduces operator skill requirements and eliminates human errors
Zero SF6 Gas Emission
Closed-loop test system, almost no gas consumption → environmentally friendly and reduces test cost
FAQ
Q: What is the advantage of on-site calibration without disassembly compared to traditional methods?
A:
- Safety: No need to disassemble high-voltage equipment, eliminates the risk of electric shock and SF6 gas leakage
- Efficiency: Reduces test time from 2-3 hours to 10-15 minutes per relay
- Cost: No need for SF6 gas recovery equipment and professional disassembly tools
- Reliability: Tests the relay in its actual operating state, avoiding performance changes caused by disassembly and transportation
Q: How much SF6 gas is consumed during calibration?
A: The instrument adopts a closed-loop test system with less than 50mL gas consumption per test, which is almost negligible. There is no need to replenish SF6 gas after calibration, and there is no impact on the internal pressure of the equipment.
Q: Can it test both relative pressure and absolute pressure density relays?
A: Yes. GDJD-5A supports both relative pressure and absolute pressure measurement modes, and can test all types of SF6 density relays currently used in power systems.
