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GE WESDAC D20 PS｜Power Supply Module｜
Product Overview
GE Vernova D20 Series – Redundant Power Supply Module
This power supply module is designed specifically for the D20 protection, control, and automation system, providing highly reliable dual-redundant power input, fast hot-backup switching, and comprehensive protection to ensure uninterrupted system operation in critical industrial environments.
Power Supply Architecture
Power supply type: Dual redundant input
Redundancy mode: Hot-backup switching
Automatic takeover in case of single power input failure
Input Specifications
AC input: 85–264 VAC, 50/60 Hz
DC input: 110–300 VDC
Wide input range suitable for unstable or fluctuating industrial power grids
Output Specifications
Main output: 24 VDC
Supplies power to D20 I/O and control modules
Auxiliary output: 5 VDC
Supplies power to communication links and logic circuits
Output Power
24 VDC output:
Rated: 200 W
Maximum: 250 W
5 VDC output:
Rated: 10 W
Output Accuracy
24 VDC: ±2%
5 VDC: ±3%
Redundancy Performance
Redundant switching time: < 5 ms
Seamless power transfer without output interruption, preventing system reset or crash
Protection & Safety Functions
Overvoltage protection
Overcurrent protection
Short-circuit protection
Over-temperature protection
Automatic fault lockout with alarm in case of abnormal operation
Core Strengths
Redundant Hot-Backup Design
Dual power inputs enable uninterrupted power switching
In the event of a single power source failure, the standby circuit automatically takes over, avoiding system shutdown
Wide-Range Input Adaptation
Supports both AC and DC inputs
Suitable for industrial environments with large power grid fluctuations
Eliminates the need for external voltage stabilization equipment
Enhanced Protection Mechanisms
Comprehensive electrical and thermal protection prevents:
Power module damage
Secondary impact on connected D20 modules and field equipment
Convenient Status Monitoring
LED indicators provide real-time visual status of power and fault conditions
Dry contact alarm outputs support remote transmission to monitoring or SCADA systems, enabling predictive maintenance
Seamless System Compatibility
Designed exclusively for the D20 series
Fully compatible with D20 C I/O modules and D20 M main control modules
True plug-and-play integration within the D20 rack
Typical Application Scenarios
Power Systems
Core power supply for D20 protection and control systems in substations
Ensures continuous operation of relay protection and switchgear control modules
Petrochemical Industry
Redundant power source for DCS systems in petrochemical plants
Provides uninterrupted power to on-site I/O modules and communication networks
Industrial Automation
Power unit for D20-based control systems in heavy-duty production lines
Suitable for environments with high temperature, vibration, and electromagnetic interference
GE WESDAC D20 PS｜Power Supply Module｜
By structuring the information in this manner, the article provides a clear and organized understanding of input channels, transducer supply, and communication implementations in distributed control systems.
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