Description
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Wide-range input conversion
Supports 88~132VAC / 100~150VDC universal AC/DC input, converting the on-site 110V AC / 125V DC control power supply into three isolated regulated DC outputs to power all boards in the MicroNet Plus control system:
Main 5V (maximum 32A): CPU, communication card, digital IO, encoder board core logic power supply
24VDC (maximum 12A): Analog 4-20mA circuit, relay output, external sensor power supply
5V pre-charge (3A): Supports hot-swappable IO module buffer power supply to prevent damage to boards from sudden impact during insertion and removal
The unit features a 2-slot plug-in design, directly inserting into the system chassis and providing unified power to the rack backplane, eliminating the need for external distributed power supplies.
Redundant Parallel Current Sharing Function (Key to Unit Safety)
Supports dual-power supply hot-redundant parallel connection with a built-in automatic current sharing circuit. The two power supplies evenly distribute the load across the entire unit, reducing heat generation and extending lifespan.
In the event of a single power supply failure, power outage, or damage, the other power supply instantly takes over the entire load without interruption or disruption to the control system, meeting the uninterrupted control requirements of the turbine and generator set.
Supports online hot-swapping: Faulty power supplies can be directly plugged in and replaced without shutting down the unit, ensuring uninterrupted operation.
Multiple Hardware Protection Functions
Built-in full-condition fault protection, immediately cutting off output and latching faults upon detection of abnormalities:
Overvoltage protection: Shuts down when output voltage exceeds the limit.
Overcurrent/Short Circuit Protection: Quickly limits current in case of backplane or card short circuits to prevent burnout of the entire unit.
Over-temperature protection: Automatically reduces power or shuts down when internal temperature is too high.
Input Power Loss/Phase Loss Alarm: Provides early warning of external power supply abnormalities.
Fault Status Monitoring and Alarm Upload
Four independent LED indicators on the panel intuitively display real-time status:
OK: Power supply is operating normally.
Input Fault: Input power abnormality.
Overtemperature: Overheating fault.
Power Supply Fault: Internal output fault.
Internal hard-wiring fault signals are connected to the CPU controller, which can display power fault alarms on the host computer and HMI screen, record fault codes, and facilitate maintenance troubleshooting.
Industrial Anti-interference and Wide Environmental Adaptability
Built-in EMC electromagnetic filtering and isolation circuits resist interference from power plants, oil and gas field inverters, motors, and high-voltage equipment, ensuring a clean and noise-free control power supply.
Wide Temperature Operation: -10℃ ~ +65℃, automatic derating output in high-temperature environments, suitable for harsh conditions such as outdoor use, computer rooms, and offshore platforms; LVD, ATEX explosion-proof, and marine-grade certifications make it suitable for explosion-proof areas and marine power systems.
System Collaborative Auxiliary Functions
Unified Backplane Power Distribution: Provides isolated power to the CPU, AI/AO, DI/DO, communication cards, and overspeed protection modules, avoiding signal drift caused by multiple grounding points and potential differences.
Power-on Sequence Management: Controllable power-on sequence, pre-charges 5V before starting the main circuit to prevent damage to the CPU and high-speed IO cards from power-on surges.
With MicroNet monitoring software (Control Explorer), power supply voltage, current, temperature, and fault records can be remotely read for remote diagnostics.
Input Specifications (Differentiating Models in the Same Series)
5466-1001: 110V AC / 125V DC Universal Input (AC/DC Dual-Use)
5466-1000: 24VDC Input
5466-1002: 220VAC/250VDC High Voltage Input
Rack Usage: Standard 2-slot card, compatible with MicroNet Plus 8-slot / 14-slot chassis (5453-829, 5453-759)
Parallel Current Sharing: Supports redundant parallel connection of multiple power supplies, automatic load sharing, no downtime in case of single unit failure
Noise: Operating noise <70dBA, suitable for long-term continuous operation in control rooms
Total Weight: Approximately 22kg for the entire power supply assembly in a single chassis
Certifications and Compliance Standards
Safety Certifications: LVD (Low Voltage Directive), EMC Electromagnetic Compatibility, ATEX Explosion-proof Certification
Marine Class / Industrial Certifications: CSA, ABS, DNV (Det Norske Veritas)
Main Features
Multi-channel Isolated Regulated Output
Provides multiple stable DC power supplies for the CPU, analog AI/AO, digital DI/DO, encoder cards, and communication boards within the chassis. Built-in overcurrent, overvoltage, short circuit, and overheat protection.
Fault Alarm
Panel status indicator lights and system fault signals are uploaded to the CPU, allowing for display of power failure, overload, and power outage alarms on the host computer.
Redundancy and Fault Tolerance
Dual power supply hot backup architecture; seamless takeover from one power source in case of failure, meeting the uninterrupted control requirements of safety-critical equipment such as steam turbines, gas turbines, and generator sets.
Wide Operating Condition Adaptability
Industrial wide-temperature design, suitable for power plants, oil fields, chemical plants, and marine power unit sites.
Typical Application Scenarios
Gas turbine and steam turbine speed regulation/protection control systems
Large diesel/gas generator set grid connection and load distribution control
Centrifugal compressor and reciprocating compressor interlocking speed regulation systems
Marine power stations and offshore platform power control (with DNV/ABS ship inspection certification)
Comparison Table of Power Supply Models in the Same Series
Model Input Power Applicable Scenarios
5466-1000 24VDC Field DC Battery power supply scenario
5466-1001 110VAC / 125VDC 110V Industrial AC / DC mains (most commonly used)
5466-1002 220VAC / 250VDC 220V Mains power grid
5466-1049 TMR core dedicated power supply Triple redundancy TMR safety control system
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admin –
It is not an ordinary switching power supply, but a dedicated redundant power supply unit for the turbine/generator set safety control system. Its core function is to ensure uninterrupted power supply throughout the entire process of unit speed regulation, protection, and grid connection control, and to avoid unit tripping and shutdown accidents caused by single point power supply failure.
https://www.weikunfadacai1.com/product/woodward-5466-1001/