Core Product Functions
DC Power Conversion
Converts alternating current (AC) into stable direct current (DC), providing standard voltages such as 24V, 48V, and 110V for control systems, protection devices, sensors, and more.
Supports a wide input voltage range (e.g., 85-264V AC) to adapt to diverse power grid environments.
Redundancy and Reliability Design
Parallel Redundancy: Multiple modules operate in parallel, automatically balancing current to avoid single points of failure.
Hot Swappability: Supports live module replacement, minimizing downtime.
High MTBF (Mean Time Between Failures): Industrial-grade design with a lifespan of over 10 years.
Comprehensive Protection Mechanisms
Overvoltage, overcurrent, short-circuit, and overtemperature protection prevent equipment damage.
Input undervoltage/overvoltage protection ensures stable power supply operation.
Intelligent Monitoring and Communication
Built-in monitoring module displays real-time parameters such as voltage, current, and temperature.
Supports communication protocols such as Modbus, Profibus, and EtherCAT, and can be connected to DCS/SCADA systems.
Typical Product Series
1. PSD/PSDH Series
Targeting: General-purpose industrial DC power supply suitable for low- to medium-power loads.
Features:
Output power: 100W-1000W.
Efficiency: ≥92%.
Protection level: IP20 (indoor) or IP54 (dust and water resistant).
Certifications: UL, CE, CCC, etc.
2. DCP Series
Targeting: High-power-density DC power supply suitable for compact installations.
Features:
Output power: 1kW-20kW.
Compact size, supports 19-inch rack mounting.
Digital control, fast dynamic response.
UPS-compatible DC power supply
Targeting: Seamlessly integrates with ABB UPS systems to provide backup power.
Features:
Supports battery charge and discharge management.
Automatically switches between mains and battery power to ensure continuous power supply.
Key Technical Advantages
High-Frequency Switching Technology
Soft switching technology reduces switching losses and improves efficiency by 10%-15%.
30%-50% smaller and lighter.
Digital Control
DSP (Digital Signal Processor) enables precise voltage regulation and fast protection.
Supports remote firmware upgrades, extending product lifecycle.
Electromagnetic Compatibility (EMC) Optimization
Compliant with IEC 61000 standards, with strong anti-interference capabilities, suitable for complex electromagnetic environments.
Application Scenarios
Industrial Automation
Provides stable power for PLCs, DCSs, HMIs, inverters, and more.
Example: Robot control systems on automotive production lines.
Electric Power
Powers DC panels, relay protection devices, and smart meters in substations.
Example: Auxiliary power for wind farm converters.
Rail Transit
Powers signal systems, communication equipment, and door control systems.
Example: Auxiliary power supply for subway train traction systems.
New Energy Field
Photovoltaic inverters, energy storage systems, and charging station power modules.
Example: DC power supply for photovoltaic power station monitoring systems.
Maintenance and Troubleshooting
Daily Inspection
Are the input/output voltages normal (measured with a multimeter)?
Is the cooling fan running? Are the vents blocked?
Alarm indicator status (a red light indicates a fault).
Common Faults and Solutions
No output:
Check whether the input power is connected and the fuse is blown.
Reset the protection circuit (for example, by pressing the “Reset” button).
Unstable output voltage:
Check whether the load is overloaded or short-circuited.
Replace aging capacitors or voltage regulator modules.
Overheating shutdown:
Clean the dust screen and improve ventilation.
Lower the ambient temperature or reduce the load.
Regular Maintenance
Check the capacitor condition (such as ESR value) every 6 months.
Replace the cooling fan bearing lubricant annually.
Summary
ABB’s auxiliary DC power supply units offer high reliability, high performance, and intelligent functionality, making them suitable for demanding industrial environments. When selecting a power supply, consider load requirements, environmental conditions, and redundancy requirements. Regular maintenance is also recommended to ensure long-term stable operation.
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