Product Overview

• PN: 129478-01
• Brand: Bently Nevada (Baker Hughes)
• Series: 3500 Machinery Protection TSI System
• Type: High Voltage DC Power Input Module (PIM Rear Card)

• Function: Dedicated rear wiring terminal board paired with 3500/15 DC front power module. It receives 88~140VDC industrial high-voltage direct current power supply from field power distribution cabinet, transmits electric energy to front power unit and converts to multi-group stable DC bus voltage, supplying power to all monitoring, communication, relay and display modules inside the 3500 rack. Two sets of this rear card plus corresponding front power supply can build 1+1 redundant power backup to guarantee uninterrupted system operation

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Core Features

1. Specially designed for 88~140VDC wide-range high voltage DC input, applicable to DC power supply scenarios in power plants, offshore platforms and industrial stations
2. Half-height structural size, perfectly fits the two dedicated power slots on the left rear side of all 3500/05 series racks, front-rear card one-to-one paired installation
3. Equipped with screw-type locking wiring terminals, anti-loose design for long-term stable wiring in vibration-intensive industrial environments
4. Built-in fuse, overvoltage, overcurrent and short-circuit protection circuit, automatically cut off abnormal input to avoid damage to rack backplane and front power module

5. Supports hot swapping under redundant power configuration; replacing a single power input module will not cause the entire monitoring rack to power off and stop working

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Technical Specifications

• Input Voltage Range: 88 ~ 140 VDC
• Form Factor: Half-height rear termination card
• Net Weight: 0.34 kg
• Operating Temperature: -30℃ ~ +65℃
• Storage Temperature: -40℃ ~ +85℃
• HS Code: 8538900000
• Certifications: CE, SIL2 functional safety certification

• Product Status: Discontinued, fully tested surplus modules available

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Compatibility

• Matched Rack: All 3500/05 series 12-slot & 14-slot monitoring chassis
• Mandatory Matching Front Module: 3500/15 DC input front power supply unit
• System Expansion: Two pieces of 129478-01 can be installed simultaneously to realize dual redundant DC power supply

• Not Compatible: AC power rear card 125840-01, low-voltage DC input termination boards, third-party non-3500 series rack chassis

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Application

1. DC power access terminal for steam turbines, gas turbines and compressor 3500 TSI protection racks in power, petrochemical and offshore engineering projects
2. Build redundant DC power supply system to ensure continuous online vibration, axial displacement and overspeed safety monitoring
3. Fault replacement and power supply system renovation of legacy 3500 machinery protection monitoring racks