1. General Information

• Manufacturer: Bently Nevada (Baker Hughes)

• Part Number: 125840-02

• Product Name: Low Voltage AC Power Input Module (PIM)

• Applicable Module: 3500/15 AC Power Supply Assembly

• Module Type: Half-height rear power input daughter board

• Application: Low-range AC power collection and filtering; converts low AC input voltage to stable internal bus power for 3500 rack; commonly used in low-voltage industrial power distribution system.

• Installation Rule: Installed on the rear side of 3500/15 power module (Left slot priority)

• Compliance: API 670, UL, CSA

2. Interface Definition

• AC Power Terminal: L / N / PE low voltage AC input terminal block

• Internal Connector: Gold finger connector for 3500/15 main power board connection

• Protection Circuit: Built-in fuse, overvoltage, undervoltage and surge suppression circuit

• Indicator: Power status LED for field troubleshooting

3. Electrical Specifications

• Input Voltage Range: 85 ~ 132 VAC (Low voltage version)

• Input Frequency: 47 Hz ~ 63 Hz

• Max Rated Power: 1200 W

• Internal Bus Output: +5 VDC system backplane power

• Isolation Strength: 1500 VAC reinforced isolation

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

4. Environmental Specifications

• Operating Temperature: -30 °C ~ +65 °C (-22 °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 rear power input daughter board

• Dimensions (H × W × D): 241 × 12.2 × 115 mm

• Weight: Approximately 0.20 kg

• Mounting: Fixed on back of 3500/15, hot-swap support

6. Compatible Devices

7. Key Features

• Low AC voltage input design for industrial low-voltage power grid

• High power load capacity for full-slot rack operation

• Multiple electronic protection to avoid power module burnout

• Half-height compact structure to save rack space

• Redundant power supply compatible for critical TSI system

8. Critical Difference Comparison (Power PIM Board)

• 125840-02: Low Voltage AC PIM, 85~132 VAC, half-height.

• 125840-01: High Voltage AC PIM, 175~264 VAC, half-height.

• 106M1081-01: Universal Voltage AC PIM, 90~265 VAC, full-height.