Product Overview

• PN: 125840-02
• Brand: Bently Nevada (Baker Hughes)
• Series: 3500 Machinery Protection TSI System
• Type: Low Voltage AC Power Input Module (PIM Rear Card)

• Function: Exclusive rear wiring terminal board paired one-to-one with 3500/15 front power supply unit 127610-01. It receives 85~132VAC low voltage alternating current from field power distribution cabinet, transmits power signal to front power module which converts input power into multiple groups of stabilized DC bus voltage to feed all monitor, relay, communication and display modules within the 3500 rack. Two sets of this PIM card plus corresponding front power modules can realize 1+1 redundant power backup to guarantee non-stop operation of the whole monitoring system.

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Core Features

1. Designed for 85~132VAC low voltage AC industrial power grid input, applicable to North American standard 110VAC power supply scenarios
2. Half-height mechanical dimension, perfectly fits two dedicated power slots on the left rear side of all 3500/05 series rack chassis, requiring strict front-rear card matching installation
3. Equipped with anti-loose screw terminal blocks, preventing wire looseness caused by long-term mechanical vibration on site
4. Built-in fuse, overvoltage, overcurrent and short-circuit protection circuit to cut off abnormal input automatically and protect rack backplane and front power unit

5. Supports hot swapping under dual redundant power configuration; single PIM replacement will not lead to full rack power failure

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Technical Specifications

• Input Voltage Range: 85 ~ 132 VAC, 47~63Hz
• Fuse Rating: 6.25A / 250V
• Form Factor: Half-height rear I/O termination module
• Net Weight: 0.34kg
• Operating Temperature: -40℃ ~ +70℃
• HS Code: 8538900000
• Certifications: CE

• Product Status: Discontinued by original manufacturer, brand new original and fully tested refurbished spare parts available

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Compatibility

• Mandatory Matched Front Module: 3500/15 universal AC power supply front card 127610-01
• Applicable Rack: All 3500/05 series 12-slot and 14-slot panel mount monitoring chassis
• Redundant Configuration: Two pieces of 125840-02 can be installed simultaneously to achieve dual redundant low voltage AC power supply

• Incompatible Items: High voltage AC PIM 125840-01, high voltage DC rear card 129478-01, low voltage DC PIM 114M5335-01, third-party non-3500 series rack chassis

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Application

1. Low voltage AC power input wiring terminal for steam turbine, gas turbine and centrifugal compressor 3500 TSI protection racks in factories adopting 110VAC power supply standard
2. Construction of redundant power supply system to ensure continuous online monitoring of vibration, axial displacement and overspeed safety protection signals
3. Fault replacement and power system renovation of legacy 3500 machinery protection monitoring racks