GE DS2020DACAG2

The GE DS2020DACAG2 is an AC-DC power conversion module designed by General Electric (GE) for the Mark V Speedtronic series of gas/steam turbine control systems. It converts 115 V/230 V AC input into 125 V DC output, providing stable power to controllers, gate pulse amplifiers, and other low-voltage DC equipment. Additionally, it features local energy storage to extend the backup time after a power outage.

Key Technical Specifications

Product Features

1. Modular Design: Features a metal mesh structure for easy on-site installation, removal, and maintenance. It can be directly plugged in and out within the cabinet.
2. High Reliability: Redundant design supports parallel operation to enhance system fault tolerance. It is also equipped with multiple protection functions.
3. Strong Compatibility: Offers plug-and-play functionality, serving as a replacement for DS2020DACAG1 and compatible with all Mark V series controllers.
4. Local Energy Storage: Built-in energy storage capacitors provide short-term backup power during outages, extending the system’s “ride-through” time.
5. Parallel Capability: The new model supports parallel connection to achieve higher output current, while parallel use of the old model is not recommended.

Structure and Components

• Enclosure: Grid metal enclosure (compared to the solid enclosure of the previous generation) for better heat dissipation.
• Input Terminals: 115 V/230 V AC terminal blocks with misconnection protection.
• Rectification/Filter Circuit: Bridge rectifier + high-capacity filter capacitor to convert AC to smooth DC.
• Voltage Regulation/Adjustment Module: DC-DC converter that outputs 125 V DC and maintains voltage stability.
• Protection Circuit: Detects and disconnects in case of overcurrent, overvoltage, or short-circuit.
• Indicator Lights: LED status indicators showing normal power supply, fault, or standby status.
• Parallel Interface: Output terminals for parallel connection of multiple modules.

Typical Application Fields

• Gas/steam turbine control systems (GE Mark V Speedtronic)
• Power plant power distribution and control (main control of power stations, excitation systems)
• Petrochemical, offshore platform, and marine electrical systems (requiring reliable 125 V DC power)
• Industrial automation (power supply for PLCs, DCS, and I/O modules)

Installation Key Points

1. Power Connection: Ensure the AC input voltage is consistent (115 V or 230 V) and use power supplies with the same phase to avoid voltage imbalance during parallel operation.
2. Grounding: The module enclosure must be reliably grounded to prevent electric leakage.
3. Heat Dissipation: Maintain ventilation around the front and rear of the metal mesh enclosure. Avoid stacking to prevent poor heat dissipation.
4. Parallel Connection: If parallel connection is needed to increase current, use dedicated parallel terminals and ensure the input voltage of all parallel modules is consistent.
5. Indicator Check: After installation, confirm the LED displays normally (green/blue indicates normal power supply).

Maintenance Recommendations

1. Regular Inspection: Check the tightness of input/output terminals, wiring integrity, and indicator status every 6 months.
2. Cooling Port Cleaning: Prevent dust accumulation from affecting heat dissipation.
3. Function Testing: Measure the output voltage/current during shutdown maintenance windows to confirm it is within the rated range.
4. Replacement Cycle: It is recommended to replace the module every 5 years to prevent output fluctuations caused by internal capacitor aging.
5. Troubleshooting: If the indicator shows a fault, first check whether the overcurrent/overvoltage protection has been triggered. Replace the corresponding module if necessary.

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• Comprehensive Spare Parts Stock: We maintain a global top-tier stock of industrial automation spare parts, encompassing all key control system components like PLCs, DCSs, drives, and HMIs. No matter the brand or model of your equipment, we guarantee fast and precise spare parts delivery to keep your operations running.
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