Product Overview

• PN: 84152-01
• Brand: Bently Nevada (Baker Hughes)
• Series: 3300 Turbomachinery Monitoring System
• Type: 4-Channel Relay Output Termination I/O Assembly

• Function: Dedicated rear wiring terminal accessory for old-generation 3300 rack monitoring modules. It integrates multi-group terminal blocks to aggregate alert, danger and system fault relay signals from front monitoring cards, standardizes external wiring layout, and transmits switch quantity signals to field audible-visual alarm devices, DCS distributed control system and ESD emergency shutdown interlock loops. It isolates internal rack circuits from external control loops to avoid backfeed damage to monitoring mainboard.

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Core Features

• Four groups of independent SPDT relay terminal circuits, each channel supports normally open and normally closed dual contact wiring
• Compact plug-in rack-mounted structure, directly inserted into the rear slot of 3300 series rack cabinet
• Clear printed label for each terminal definition, effectively preventing field wiring misconnection
• Built-in surge and overcurrent protection for signal loops, improving system anti-interference performance
• Aluminum alloy shell with conformal coated circuit board, moisture-proof, dust-proof and anti-electromagnetic interference for long-term cabinet operation
• Supports on-site one-to-many signal distribution, one module can concentrate output multiple alarm points

• Belongs to discontinued spare part of the original factory, mainly used for maintenance replacement of old 3300 monitoring cabinets

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Technical Specifications

• Relay Contact Rated Capacity: Max 10A, 250VAC / 30VDC
• Operating Temperature: -40℃ ~ +85℃
• Overall Dimension: 140 × 80 × 55 mm
• Net Weight: 0.35 kg
• Power Supply: Wide range 24VDC or 90~265VAC optional
• HS Code: 8538900000
• Certifications: CE, UL

• Product Status: OEM discontinued production; brand new original sealed and fully tested refurbished spare parts available

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Compatibility

• Matched Front Modules: Full range 3300 series vibration, displacement, speed monitoring main cards
• Applicable Chassis: 3300 series standard rack frame
• External Matching Equipment: Field alarm lights, buzzers, PLC input modules, ESD interlock system

• Incompatible Scope: Cannot be directly matched with new 3500/32M relay module without rack structure adaptation

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Application

• Alarm signal centralized wiring and hardwire interlock for legacy 3300 monitoring cabinets of steam turbines, compressors and generator sets in power and petrochemical plants
• Renovation and wiring sorting of old monitoring systems with messy terminal wiring
• Emergency spare replacement for on-site equipment shutdown caused by aging and damage of original relay terminal assemblies
• Auxiliary signal output expansion for rotating machinery condition monitoring points