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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
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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| Base price (interpolation) | $14 |
| × Product factor | ×1.0000 |
| × Country factor | ×1.0000 |
| × Copper-linked factor | ×1.0000 |
| + Options / accessories | $0 |
Complete equipment — no winding copper linkage
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