Professional triple/dual channel electronic overspeed protection front card for 3500 TSI system, matched with rear I/O module 133396-01, monitors turbine/compressor rotational speed and executes emergency trip protection, surplus tested spare parts for turbomachinery safety system

Product Overview

• PN: 3500/53, Part No: 133388-01
• Brand: Bently Nevada (Baker Hughes)
• Series: 3500 Machinery Protection TSI System
• Type: Electronic Overspeed Detection (EOS) Front Module

• Function: Core dedicated overspeed protection front board of 3500 rack, supports 2-channel or 3-channel speed input configuration (3-channel for TMR triple redundant safety architecture, fully compliant with API 670). It receives pulse signals from eddy current proximity probes or magnetic pickup Keyphasor sensors, calculates real-time rotor rotating speed (0~50000RPM max). When rotation speed exceeds preset alarm/trip threshold, it outputs hardwire trip signal to ESD system to force unit shutdown, preventing destructive overspeed failure of steam turbines, gas turbines and centrifugal compressors. Must pair with dedicated rear termination card 133396-01 for field sensor wiring.

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Core Features

1. Support 2CH dual redundant / 3CH TMR triple redundant speed acquisition, meets high-level functional safety protection requirements
2. Ultra-fast overspeed trip response, independent hardware interlock logic, will not be affected by rack communication breakdown
3. Front panel BNC interface for direct Keyphasor signal access, LED indicators for channel status, fault and overspeed trigger state
4. Comprehensive self-diagnosis for probe disconnection, short circuit, signal loss and module hardware failure
5. Hot-swappable design; official specification mandates the rack must be equipped with dual redundant power supply when deploying 3500/53 module

6. Upload speed value, alarm and trip event data to System 1 or DCS via rack communication bus

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Technical Specifications

• Configurable Channels: 2 or 3 speed input channels
• Measuring Speed Range: 0 ~ 50000 RPM
• Input Signal Adaptation: 3300XL series eddy current probe, magnetic pickup speed sensor
• Input Voltage Range: -24V ~ +10V
• Typical Power Consumption: 9.2W
• Net Weight: 1.81kg
• Operating Temperature: -40℃ ~ +70℃
• HS Code: 8538900000
• Certifications: CE, SIL2 functional safety certification

• Product Status: Discontinued, brand new original & fully tested surplus modules available

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Compatibility

• Matched Rack: All standard 3500/05 series 12-slot & 14-slot monitoring chassis
• Mandatory Matching Rear I/O Card: 133396-01 overspeed dedicated termination module
• Mandatory Rack Configuration: Dual redundant 3500/15 power supply modules
• Upper System: 3500 rack configuration software, System 1 predictive maintenance platform, ESD emergency shutdown system

• Not Compatible: Ordinary vibration monitor rear cards, non-3500 series third-party rack chassis

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Application

1. Critical overspeed safety interlock protection for steam turbines, gas turbines and large compressors in thermal power, petrochemical and refining industries
2. Rotor over-rotation fault prevention and emergency trip control for high-speed rotating units
3. Upgrade and spare replacement of legacy 3500 TSI overspeed protection subsystems