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GDGK-307
CHONGQING GOLD
Introduction：
GDGK-307 circuit breaker tester breaks through the shortcomings of traditional split equipment, integrating five major modules: mechanical characteristics, dynamic resistance, loop resistance, vibration fingerprint diagnosis, and graphite contact-specific testing. It is compatible with all types of high-voltage switches, including vacuum, SF6, GIS, oil-type, and graphite contact switches.
Advantages：
1. Built-in 0~20A high-power opening and closing drive power supply, covering the coil voltage of various circuit breakers worldwide, eliminating the need for an external test power supply;
2. Supports both internal drive and external voltage triggering modes. An external AC/DC 24~300V signal is sufficient to link with the station's operating power supply;
3. Triple hardware protection against short circuits, reverse connections, and overvoltage at all ports. Automatic shutdown and alarm for incorrect wiring prevent damage to the tested switch coil and the main unit, maximizing safety during on-site testing.
4. 12 independent time acquisition channels, divided into common ground/dual isolation signal ports, supporting single-pole double-break and multi-level linkage switch synchronous testing;
5. Time measurement resolution 0.01ms, maximum range 4000ms, error <0.1ms;
6. Supports linear/angle/accelerometer sensors, minimum stroke accuracy 0.01mm;
7. Built-in multi-level electromagnetic shielding and AFC anti-interference circuit, waveform distortion-free in 800kV strong electromagnetic substation environments, data repeatability error less than 0.05%.
Technical parameters：
| Test Item | Technical Index |
|---|---|
| Time Measurement | Measuring range: 0~4000msResolution: 0.01msMax error: ＜0.1ms12 independent isolated channels |
| Travel Measurement | Linear sensor: 0~250mm / 0~25mmAngle sensor: 0~360°Resolution: 0.01mm / 0.01° |
| Speed Test | Measuring range: 0~20m/sMeasuring error: ＜0.5%RDG |
| Dynamic & Contact Resistance | Max DC test current: 100AMeasuring range: 0~10mΩError: ＜0.5% Full Scale |
| Vibration Detection | Measuring range: 0~5000GMeasuring error: ＜3%3 independent analog input channels |
| Built-in Operating Power Supply | Adjustable DC voltage: 24~265VMax output current: 20A |
| Data Storage & Output | Built-in 8G memory, dual USB portsEquipped with thermal micro printerSupport automatic Word test report export |
| Operating Environment | Ambient temperature: -10℃ ~ 50℃Relative humidity: ≤80%RHSuitable for outdoor high & low temperature field test |
| Overall Structure | Industrial aluminum alloy chassisDual portable side handlesEquipped with standard shockproof aviation case |
Suitable Application Scenarios：
Power Grid Systems: Annual preventative testing of provincial/municipal substations, fault diagnosis and repair of GIS switchgear, and major overhaul testing of switches.
Switchgear Manufacturers: Full-scale factory calibration and R&D performance testing of vacuum/SF6/graphite contact circuit breakers.
Third-Party Power Testing Agencies: Project completion acceptance, equipment condition assessment, and forensic testing.
New Energy Power Plants: Periodic diagnostics of high-voltage switches in photovoltaic/wind power substations.
Industrial, Mining, and Rail Transit: Operation and maintenance of switches in high-voltage distribution rooms of steel mills, coal mines, and subways.
Overseas Power Projects: Complete testing of cross-border substations; bilingual reports adapted to overseas acceptance standards.
Partners：
