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GZDW DC Power Systems Series DC Power Supplies
6 Models available
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GZDW DC Power Systems — 110V/220V DC Panel for Substations
The GZDW series microcomputer-controlled DC power systems provide the dedicated operating power supply (110V or 220V DC) required by switchgear, protection relays, and control equipment in substations and switching stations. Rated battery capacity 10–200 Ah with high-frequency switching charger modules in N+1 redundant configuration, automatic battery management, and microprocessor-based monitoring of busbar voltage, insulation, and charge/discharge state.
Key Features
Microcomputer high-frequency switching charger modules with N+1 redundancy
110V/220V DC output for protection, control, signaling and operating mechanisms
Automatic battery charging management with float/equalize charge modes
Battery bank, charger, and distribution feeder integrated in one panel
Insulation monitoring, voltage monitoring and remote communication (RS485)
Modular and wall-mount (small capacity) configurations available
Applications
- Substations and switching stations
- Distribution rooms and ring main unit stations
- Industrial plants and power plants
- Rail, metro and infrastructure power systems
Specifications Range
All specifications and dimensions can be customized upon request
Model Selector
| Key parameters | Model Range |
|---|---|
| Capacity | 65–500 W |
| Input voltage | 380VAC 3-phase |
| Output voltage | DC 220V (110V optional) |
| Output current | 5, 20, 10, 40 |
| Frequency (Hz) | 50/60 |
| Efficiency | >90% |
| Protection | Over-voltage, over-current, short-circuit |
| Standard | GB/T 17478, IEC 61204 |
| Compare | Model | Series | Power (W) | Output voltage | Output current | Frequency (Hz) | Weight | Dimensions |
|---|---|---|---|---|---|---|---|---|
| GZDW-65Ah | GZDW DC Power Systems | 65Ah | DC 220V (110V optional) | 5 | 50/60 | 145 kg | 1095×820×3100 mm | |
| GZDW-100Ah | GZDW DC Power Systems | 100Ah | DC 220V (110V optional) | 20 | 50/60 | 170 kg | 1185×890×3355 mm | |
| GZDW-150Ah | GZDW DC Power Systems | 150Ah | DC 220V (110V optional) | 10 | 50/60 | 203 kg | 1300×975×3670 mm | |
| GZDW-200Ah | GZDW DC Power Systems | 200Ah | DC 220V (110V optional) | 40 | 50/60 | 234 kg | 1395×1045×3950 mm | |
| GZDW-300Ah | GZDW DC Power Systems | 300Ah | DC 220V (110V optional) | 20 | 50/60 | 294 kg | 1565×1175×4430 mm | |
| GZDW-500Ah | GZDW DC Power Systems | 500Ah | DC 220V (110V optional) | 40 | 50/60 | 404 kg | 1855×1390×5240 mm |
Product Drawing
Electrical Equipment - GZDW-200Ah
Note: This is a general product illustration. For detailed technical drawings and specifications, please contact our engineering team.
Selection Guide
Voltage
Select 110V or 220V DC to match the protection and operating equipment in the station.
Battery capacity
Size the Ah rating from total DC load and required backup autonomy time.
Monitoring
Specify insulation and battery monitoring with RS485/communication for unmanned stations.
- Frequently Asked Questions
What is a GZDW DC power system?
A GZDW panel is a DC operating power supply system that feeds protection relays, circuit-breaker operating coils, and control circuits in a substation, typically at 110V or 220V DC, backed by a battery bank so the station remains operational during AC outages.
Why is N+1 charger redundancy important?
N+1 redundancy means one charger module can fail while the remaining modules still deliver full charging and load current, keeping the battery charged and the DC bus stable without interruption.
How do I size the battery bank?
Battery capacity is sized from the station's DC load (relays, tripping coils, signaling, emergency lighting) and the required autonomy time after an AC loss, commonly 2–8 hours.
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