1. General Information

• Manufacturer: Bently Nevada (Baker Hughes)

• Part Number: 106M1079-01

• Product Name: Universal AC Power Supply Main Board

• Applicable Module: 3500/15 AC Power Supply Assembly

• Module Type: Half-height main power conversion board

• Application: Main power conversion core board for 3500 rack; converts AC input to stable +5VDC backplane power and auxiliary DC voltage; supplies power for all monitor, relay and communication modules inside the rack.

• Matching Rear Board: 106M1081-01 / 125840-01 / 125840-02

• Compliance: API 670, ATEX, IECEx, CSA

2. Functional Description

• Power Conversion: AC to DC isolated switching power conversion

• Bus Output: +5 VDC system backplane power for all rack modules

• Auxiliary Output: 20~30 VDC auxiliary sensor power

• Redundancy Support: Dual power supply redundant hot backup configuration

• Self-Diagnosis: Built-in power health monitoring and fault LED indication

3. Electrical Specifications

• Input Voltage Range: 85 ~ 264 VAC (Universal Wide Voltage)

• Input Frequency: 47 Hz ~ 63 Hz

• Max Output Power: 1200 W Full rack load capacity

• Backplane Output: +5 VDC high precision constant voltage

• Efficiency: ≥ 85% conversion efficiency

• Isolation Voltage: 1500 VAC reinforced isolation

• Protection Level: Overvoltage, Undervoltage, Overcurrent, Short-circuit protection

4. Environmental Specifications

• Operating Temperature: -20 °C ~ +65 °C (-4 °F ~ +149 °F)

• Storage Temperature: -40 °C ~ +85 °C (-40 °F ~ +185 °F)

• Relative Humidity: 5% ~ 95% (Non-condensing)

• Anti-vibration: Compliant with API 670 industrial vibration standard

5. Mechanical Specifications

• Structure: Half-height main power motherboard

• Dimensions (H × W × D): 241 × 12.2 × 251 mm

• Weight: Approximately 0.45 kg

• Mounting: 3500/15 power slot, hot-swap capable

6. Compatible Devices

• Rear I/O Board: 106M1081-01(Universal), 125840-01(High AC), 125840-02(Low AC)

• System Rack: All standard 3500 series machinery protection racks

• Configuration: Support primary & backup dual power redundancy

7. Key Features

• Wide universal AC input for global industrial power grid

• High power output to support full 14-slot rack operation

• Complete protection circuit to avoid module burnout and rack outage

• Half-height design saves rack space for redundant power installation

• Stable and low ripple output for high-precision TSI measurement

8. Power Board Ultimate Classification

• 106M1079-01: Power Main Board, Power conversion core (Half-height).

• 106M1081-01: Universal AC Rear Board, Full-height.

• 125840-01: High Voltage AC Rear Board, Half-height.

• 125840-02: Low Voltage AC Rear Board, Half-height.