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- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GDDZ Series is a professional, high-precision comprehensive test system designed for DC power supply systems in 10kV–500kV substations, power plants, and industrial facilities. It fully complies with DL/T 724-2000 and GB/T 19826-2005, enabling one-stop testing of charger performance and battery bank capacity.
Adopting ARM+DSP dual-core architecture and high-speed sampling technology, the GDDZ delivers accurate, real-time measurements of DC voltage/current, AC input, and ripple voltage, automatically calculating voltage regulation accuracy, current regulation accuracy, ripple factor, and efficiency. Equipped with a large TFT touch LCD, it features full-automatic testing: set parameters, and the unit completes AC voltage adjustment, load application, data logging, and shutdown unattended.
With 16MB FLASH storage, RS232/USB communication, and PC analysis software, it supports data review, curve display, report generation, and long-term historical data management. The modular, compact design ensures easy transport and on-site deployment, making it ideal for commissioning, periodic maintenance, and fault diagnosis of DC power systems.
Specifications
| Parameter | Specification |
| Test Voltage Range | DC 0–300V; AC 0–450V |
| Test Current Range | DC 0–200A |
| Ripple Voltage Range | 0–10V |
| Voltage Regulation Accuracy | ±(0.1%–0.5%) |
| Current Regulation Accuracy | ±(0.2%–1.0%) |
| Ripple Factor | 0.1%–5.0% |
| Battery Capacity Test Range | 10–5000Ah |
| Display | 7-inch TFT touch LCD (65K color) |
| Data Storage | 16MB FLASH; 1000+ records |
| Communication | RS232 + USB 2.0 |
| Power Supply | AC220V±15%, 50Hz |
| Operating Temperature | 10°C ~ +40°C; Humidity ≤80%RH |
| Protection | Over-voltage, over-current, short-circuit, thermal shutdown |
| Dimensions (mm) | 420×320×180 |
| Weight | 12kg (excluding accessories) |
| Compliance | DL/T 7242000, GB/T 198262005, IEC 610101 CAT III 600V |
Applications
Core Test Objects
· Substation DC systems: 110kV–500kV; 110V/220V chargers & 200–2000Ah battery banks
· Power plant DC systems: thermal/hydro plants; 220V chargers & 500–5000Ah batteries
· Industrial DC systems: petrochemical, metallurgy, data centers; 48V/110V/220V systems
· Battery maintenance: capacity test, discharge test, fault diagnosis for lead-acid batteries
· Charger commissioning: new charger performance verification; compliance check
Typical Usage Scenarios
· Preventive maintenance: annual comprehensive test of DC chargers & batteries
· Commissioning: new substation/plant DC system validation
· Fault diagnosis: poor regulation, excessive ripple, capacity degradation
· Battery replacement: capacity test before/after battery replacement
· Compliance inspection: meets DL/T 724 & GB/T 19826 power industry standards
Advantages
All-In-One Test (Charger + Battery)
One unit replaces charger tester + battery discharge tester → reduce equipment investment & improve efficiency
Fully Automatic Operation
One-key start; unattended testing; auto data logging → save 80% labor vs manual test
High Precision & Compliance
ARM+DSP sampling; meets DL/T 724 & GB/T 19826 → ensure test accuracy & regulatory compliance
Data Traceability & Analysis
16MB storage; USB export; PC software → long-term data management & report generation
Compact & Portable
Modular design; lightweight; field-ready → easy transport & deployment in substations
FAQ
Q: Can it test both chargers and batteries?
A: Yes. All-in-one design for charger performance and battery capacity testing.
Q: Is the test fully automatic?
A: Yes. Set parameters, and it completes AC adjustment, loading, testing, and logging unattended.
Q: Does it comply with power industry standards?
A: Yes. Fully compliant with DL/T 724-2000 and GB/T 19826-2005.
Q: Can it generate test reports?
A: Yes. PC software supports curve display, data analysis, and report generation.
Q: What’s included in the standard package?
A: Main unit, test cables, current clamp, power cord, USB flash drive, carry case, manual, calibration certificate.
