Technical Specifications

• Model: 405A528G61

• Manufacturer: Westinghouse / Emerson

• Compatible Systems: Ovation / WDPF DCS

• Type: Chassis‑mounted DC power supply

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

• Output: Multiple regulated DC voltages (for Multibus backplane & modules)

• Mounting: Plug‑in to dedicated slot in 405A528 series chassis

• Hot‑swap: Yes (replace 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% to 95%, non‑condensing

• Key Features: Built‑in EMI filtering, overvoltage/overcurrent/short‑circuit protection, LED status indicators, conformal coating for harsh environments

Series Context

• 405A528G01/G02/G21/G33: 12‑slot Multibus chassis (backplane + enclosure)

• 405A528G61: Power supply module that plugs into above chassis

Application Fields

• Power Generation: Thermal/nuclear power plants (Ovation/WDPF DCS)

• Process Industries: Petrochemical, pulp & paper, cement, water treatment

• Legacy System Maintenance: Replacement power supply for aging 405A528 chassis

Installation & Operation

1. Insert module into designated power supply slot in 405A528 chassis.

2. Secure with front‑panel screws.

3. Connect AC input to chassis; verify Power OK LED.

4. For redundancy, install second 405A528G61 in adjacent slot.

5. Monitor status LEDs; hot‑swap faulty units as needed.

Diagnosis & Maintenance

• Green Power LED: Normal DC output.

• Red Fault LED: Overvoltage, overcurrent, overtemperature, or fan failure.

• Quarterly: Inspect LEDs, connectors, and air vents; clean if dusty.

• Safety: Disconnect AC before removal; allow capacitors to discharge.

Product Status