HJ-GZDW Series Substation DC Power System
Up to 220V / 250A / Smart Unattended Control
The HJ-GZDW Series Substation DC Power System is a highly reliable, microcomputer-controlled critical DC power supply. Serving as the vital “lifeline” of any electrical facility, it provides uninterrupted, ultra-stable DC power for high-voltage switchgear operation (closing/tripping), relay protection, automation controls, and emergency lighting, ensuring ultimate grid safety even during total AC power failures.
Ideal for Mission-Critical & Unattended Facilities:
- ✓ 12kV to 220kV High-Voltage Substations & Power Plants
- ✓ Heavy Metallurgy, Mining & Petrochemical Complexes
- ✓ Railway Networks & Telecommunication Hubs
- ✓ Data Centers (IDC) & High-Rise Commercial Buildings
1. Seamless Dual AC Input Switchover
Designed for absolute operational continuity. The system features a highly dependable dual AC power input mechanism. In the event of a primary AC source failure, it automatically and seamlessly switches to the backup AC source, ensuring the continuous operation of the charging modules without human intervention.
2. Intelligent Battery Management
Maximize your battery lifespan and reduce replacement CAPEX. The microcomputer controller executes strictly regulated charging and discharging curves. By automatically managing float charge, equalizing charge, and implementing precise temperature compensation, it effectively prevents battery overcharging or deep depletion.
3. Exceptional Stability & Ultra-Low Ripple
Sensitive digital protection relays require flawless power. The HJ-GZDW utilizes advanced high-frequency switching technology, delivering an extremely stable DC output with a voltage stabilization accuracy of ≤ ±1% and an ultra-low ripple factor of ≤ 1%, ensuring your secondary control systems never misoperate due to power fluctuations.
4. SCADA-Ready for Unattended Substations
Reduce your operational staffing costs. The system is equipped with comprehensive self-diagnostic capabilities, constantly monitoring insulation status, branch circuit health, and module temperatures. With built-in communication interfaces, it seamlessly transmits telemetry data to your upper-level SCADA system, making it the perfect foundation for remote, unattended substation management.
Global Factory Acceptance & Turnkey Support
Every HJ-GZDW unit undergoes rigorous routine testing, including automated switchover validation, battery discharge profiling, and communication protocol checks before dispatch. We provide fully assembled panels configured to your specific voltage and battery capacity requirements, ready for immediate site integration.
Technical Specifications
* (Note: Parameters cover standard configurations based on the GZDW series. Battery capacity and output channels are fully customizable based on your facility's protection and control load profile.)
| Electrical Parameters | |
| Rated AC Input Voltage | 3-Phase 380V ± 10% |
|---|---|
| Input Grid Frequency | 50 Hz / 60 Hz |
| Rated DC Output Voltage | 24V / 48V / 110V / 220V DC |
| Rated DC Output Current | 5A to 250A |
| Battery Capacity Range | 10Ah to 400Ah (Maintenance-Free Lead-Acid) |
| Performance Metrics | |
| Voltage Stabilization Accuracy | ≤ ± 1% |
| Current Stabilization Accuracy | ≤ ± 1% |
| Ripple Factor | ≤ 1% |
| System Efficiency | ≥ 90% |
| Acoustic Noise Level | ≤ 55 dB |
| Enclosure Protection Degree | IP20 to IP30 |
Normal Operating Environment
- Ambient Temperature: -5°C to +40°C.
- Altitude: ≤ 2000m (High-altitude configurations available).
- Relative Humidity: ≤ 90% at +20°C.
- Installation Site: Indoor substations or control rooms free from severe vibration, explosive dust, or severe chemical corrosion.
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