Specifications

• Manufacturer: Westinghouse (Emerson)

• Model: 3D04146G01

• Type: Dual Redundant I/O Power Supply Tray

• Integrated PSUs: 2 × 405A662G01 (Deltron)

• Compatible System: WDPF DCS (not Ovation/DeltaV)

• Mounting: Standard WDPF rack slot

• Status: Discontinued (EOL); refurbished/used stock only

Key Features

1. Dual Redundancy: Two integrated Deltron 405A662G01 units provide 1+1 redundant DC power for I/O modules, eliminating single points of failure.

2. Pre-Assembled Unit: Fully populated tray with built-in power supplies, backplane connectors, and wiring terminals for drop-in installation.

3. Regulated DC Output: Delivers tightly controlled DC voltage to WDPF I/O cards, ensuring stable operation of analog/digital modules.

4. Rack Integration: Designed to fit standard WDPF I/O racks, mating with system backplanes for power distribution and fault signaling.

5. Monitoring & Fault Indication: Includes status LEDs and fault alarm contacts for power supply health monitoring.

Applications

• WDPF DCS I/O racks in thermal power, nuclear power, petrochemical, and heavy industry plants.

• Legacy system maintenance & spare part replacement for aging WDPF installations.

• Rack retrofitting to upgrade or replace existing power trays in WDPF control rooms.

Related WDPF Power System Parts

• 3D04141G01/G02: Dual redundant power supply assemblies (main system power).

• 3D04142G02: DC power distribution panel.

• 3D04143G01: Bracket & interface assembly.

• 3D04146G01: Dual I/O power supply tray (I/O rack power).

Notes

• This tray is exclusive to WDPF DCS and cannot be used with Ovation, DeltaV, or other Emerson DCS platforms.

• All installation and wiring must follow Emerson/Westinghouse WDPF technical specifications and site safety procedures.

• Standard repair lead time: 2–4 weeks; rush repair options available。