1. Product Overview

2. Technical Specifications

• Model Number: 405A528G64

• Manufacturer: Westinghouse / Emerson

• Compatible Systems: Ovation™ DCS, WDPF DCS

• Module Type: Chassis‑mounted, plug‑in DC power supply

• Input Voltage: 115/230 VAC, 50/60 Hz (auto‑sensing)

• Output: Multiple regulated DC rails (Multibus standard voltages), high‑efficiency, low‑ripple output

• Hot‑Swap Capability: Yes (online replacement without system shutdown)

• Redundancy: Supports 1+1 redundant operation

• Dimensions (H × W × D): ~13.3 cm × 44.5 cm × 25.4 cm

• Weight: ~1.42 kg

• Operating Temperature: 0 °C to 50 °C

• Relative Humidity: 5%–95%, non‑condensing

• Protection Features: Overvoltage, overcurrent, short‑circuit, overtemperature, fan failure protection

• Environmental: Conformal coating, EMI filtering, LED status indicators

• Reliability: MTBF > 500,000 hours (typical)

3. Series Comparison (G61 / G62 / G63 / G64)

• 405A528G61: Standard output, for light–medium I/O loads

• 405A528G62: High output, for medium–heavy I/O loads

• 405A528G63: Maximum output, for full chassis + redundant DPUs

• 405A528G64: Enhanced high‑efficiency model, same form/fit/function as G63, with improved thermal management and longer service life

4. Applications

• Power Generation: Thermal power plants, nuclear power plants (Ovation/WDPF core power supply)

• Process Industries: Petrochemical, pulp & paper, cement, water treatment (high I/O density chassis)

• Redundant DPU Configurations: Chassis with dual DPUs and full I/O slots

• Legacy System Upgrades: Direct drop‑in replacement for aging G61/G62/G63 modules

5. Installation & Operation Instructions

1. Unpacking: Inspect module for shipping damage; verify model number and accessories.

2. Chassis Insertion: Align module with dedicated power slot in 405A528 series chassis; insert firmly.

3. Securement: Tighten front‑panel screws to secure module.

4. AC Input: Connect 115/230 VAC power to chassis input terminal.

5. Power‑On Check: Verify POWER OK LED (green) illuminates steadily.

6. Redundancy Setup: Install a second G64 in adjacent slot for 1+1 redundancy.

7. Hot‑Swap: If FAULT LED (red) lights, replace faulty module online during system operation.

6. LED Status Indicators

• Green (POWER OK): Normal DC output, all parameters within limits.

• Red (FAULT): Overvoltage, overcurrent, overtemperature, fan failure, or internal fault.

7. Maintenance & Troubleshooting

• Routine Inspection (Quarterly):

  • Check LED status indicators.

  • Inspect connectors and ventilation slots for dust or obstruction.

  • Clean dust from vents using dry, low‑pressure air.

• Safety Precautions:

  • Disconnect AC power before removing module.

  • Allow internal capacitors to discharge (≥ 5 minutes) before handling.

• Fault Diagnosis:

  • Red LED ON: Check for overload, short circuit, or blocked vents.

  • No LED: Verify AC input and chassis power connection.

8. Product Status & Compatibility

• Status: Obsolete legacy part; available as New Old Stock (NOS) or Factory‑Refurbished.

• Compatibility: Fully compatible with all 405A528 chassis and Ovation/WDPF I/O modules.

9. Warranty & Support

• Warranty: 12‑month standard warranty (refurbished units).

• Support: Emerson technical support available for installation, configuration, and troubleshooting.