Woodward 5501-381 | 220 VAC TMR Power Supply Board

Description

• Model & Brand: Woodward 5501-381
• Product Type: MicroNet TMR power supply board
• System Family: MicroNet TMR / 5009 control system
• Input Voltage: 180–264 VAC, nominal 200–240 VAC
• Input Frequency: 47–63 Hz
• Maximum Input Current: 6.7 A
• Maximum Input Power: 1,250 VA
• Output Capability: Up to 12.0 A at 24 VDC and up to 22.0 A at 5 VDC at 65°C system ambient
• Physical Dimensions: Exact standalone board dimensions are not clearly specified in the reviewed Woodward documentation; verify the cabinet drawing for freight and rack planning
• Estimated Shipping Weight: Approximately 0.7–1.2 kg packed for a protected board shipment; confirm actual packed weight before freight quotation
• What’s in the Box: 5501-381 board; ESD shielding; mechanical cushioning; documentation only when specifically included
• Typical Installation: MicroNet TMR power-supply chassis
• Part Status in Woodward Manual: Status A

Woodward’s current industrial-turbine catalog lists 5501-381 as the MicroNet TMR PS with 220 VAC input. The older Woodward manual identifies it as the 5009/MicroNet TMR Power Supply (220 V AC) and assigns product status A.

Product Introduction

High-voltage power conversion is the first physical dependency in a MicroNet TMR cabinet. 5501-381 is the 220 VAC version of the MicroNet TMR power-supply board, installed in the dedicated MicroNet TMR power-supply chassis. Its specified AC input range is 180–264 VAC at 47–63 Hz, with maximum input power of 1,250 VA and maximum input current of 6.7 A. At the output side, the MicroNet architecture can provide up to 12.0 A on the 24 VDC rail and 22.0 A on the 5 VDC rail at 65°C system ambient.

For asset management, the critical distinction is between 5501-381 and 5501-380. The former is the 220 VAC version; the latter is the 120 VAC/VDC version. Woodward also identifies 5501-381 as a recommended spare for certain 5009FT installations, confirming its importance in planned maintenance inventories. (That is a strong reason to preserve the exact input-voltage variant rather than stocking an apparently similar board.)

Core Technical Specifications

Woodward’s manual specifies the 180–264 VAC operating range, 6.7 A maximum input current, 1,250 VA maximum input power, and one-cycle hold-up at 220 VAC. The same document lists CSA, CE LVD, CE EMC, ABS, DNV, and LRS against part 5501-381.

Woodward 5501-381

🚨 Global Compliance & Industry Certifications

For this part, certification evidence should be retained with the exact hardware revision and the complete MicroNet assembly documentation.

• CSA: Listed in Woodward’s product documentation for 5501-381.
• CE LVD: Listed for 5501-381 in Woodward’s manual.
• CE EMC: Listed for 5501-381.
• ABS: Listed in the Woodward certification matrix.
• DNV: Listed in the Woodward certification matrix.
• LRS: Listed in the Woodward certification matrix.
• UL: The reviewed Woodward matrix does not show a UL mark for 5501-381; do not advertise the individual board as UL Listed without separate evidence.
• ATEX: The reviewed matrix does not identify ATEX approval for 5501-381. Do not infer hazardous-area approval from the MicroNet system alone.

Why this matters: Marine approvals such as DNV or ABS can be essential where the MicroNet system is installed on marine or offshore equipment. Using a hardware revision without the required approval evidence can create a documentation gap during vessel or plant audit.

Verify specific lot certifications with OEM.

🚨 Long-Term Storage & Asset Preservation Guide

Keep the board in its original ESD shielding bag. The 5501-381 is a board-level power component, so exposed connector surfaces and PCB assemblies deserve controlled handling. Never place the card directly on a conductive workbench without ESD protection.

Control moisture and temperature cycling. A warehouse target below 60% RH is sensible for long-term electronic spare preservation, even though the broader equipment specification permits higher non-condensing humidity. Avoid repeated movement between cold storage and warm maintenance areas; condensation on a high-voltage power board is an unnecessary pre-energization failure risk.

Inspect the power section before energization after long storage. Look for capacitor bulging, leakage, discoloration around switching components, oxidized terminals, and cracked solder joints. Do not assume a stored board is electrically equivalent to a recently tested board (particularly when storage has exceeded several years).

For critical MicroNet installations, retain the original packing label, serial number, hardware revision, and test record with the physical spare. This creates a traceable asset history and helps distinguish a qualified spare from unidentified surplus.

Physical Installation Prerequisites

• Chassis: Install only in the compatible MicroNet TMR power-supply chassis; the current Woodward catalog identifies 5453-277 as the MicroNet TMR Power Supply Chassis.
• Power Input: Confirm the cabinet provides the correct 220 VAC class input. Do not substitute the 120 VAC/VDC 5501-380 variant.
• Circuit Protection: Woodward specifies a 10 A time-delay fuse/breaker for the 5501-381 input circuit.
• Grounding: A protective-earth conductor connected to the chassis is required. Woodward states that the grounding conductor should be the same size as the main supply conductors.
• Service Clearance: Preserve front extraction access and the chassis cooling path. Do not pack cable bundles tightly against the power-supply assembly.
• Forced Airflow: The MicroNet chassis uses forced cooling; every occupied position or required blanking position must preserve the intended airflow path.
• Thermal Limit: The power-supply operating range is -10 to +65°C system ambient, with output-current derating above 55°C.
• Isolation: Before card removal or insertion, follow the approved MicroNet maintenance procedure and verify the power state. Do not work on the high-voltage section based solely on a front-panel status indication.

Buyer’s FAQ

Q1. What HS Tariff Code should be used for Woodward 5501-381?
Do not assign a final HS code from the part number alone. This is a dedicated industrial power-supply board, and classification can depend on the importing country’s interpretation of power-conversion apparatus, control-system parts, and whether the item is entered as a standalone board. Use the technical description, electrical function, commercial invoice, and destination tariff schedule for the broker’s final ruling.

Q2. What does Country of Origin mean for this spare?
COO refers to the manufacturing origin, not the warehouse from which the shipment departs. Retain the supplier’s COO statement or certificate where applicable, together with the invoice, packing list, part-number photograph, serial/lot record, and any manufacturer traceability documents. That evidence is much easier to defend during a customs audit than a shipping-label assumption.

Q3. Should shipping insurance be added for a 5501-381?
For a high-value turbine-control spare, yes. The board is physically small, but the operational consequence of receiving a damaged or nonfunctional power supply can be substantial. Use ESD shielding, rigid mechanical cushioning, moisture protection, and insurance based on the documented replacement value.

Q4. Does 5501-381 arrive with the latest firmware pre-loaded?
No firmware version should be expected in the same sense as a CPU or communications module. 5501-381 is a power-supply board, so the relevant checks are hardware revision, input-voltage variant, electrical condition, certification status, and tested output performance. Woodward’s current catalog continues to list 5501-381 as the 220 VAC MicroNet TMR power supply.