ICS Triplex T8292

ICS Triplex T8292

Product Brief Introduction: T8292 is compact rack‑mounted fused power‑distribution unit for Trusted safety‑system. It receives dual‑redundant DC input power, distributes power to 8 independent fused output branches for small‑and‑medium‑scale I/O‑rack field‑loops. Each output branch equips independent fuse‑protection and branch‑fault‑diagnostic circuit. This module implements hardware‑level fault‑isolation, and is suitable for compact‑size Trusted safety‑rack power‑distribution scenarios with limited‑branch‑quantity requirement.

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Description

ICS Triplex T8292

Technical Specifications & Performance Parameters:

  • Input Power Range: 22‑30 VDC dual‑redundant DC input, nominal 24 VDC
  • Number of Output Branches: 8 independent fused output channels
  • Per‑Branch Max Output Current: 3 A
  • Per‑Branch Fuse Specification: User‑configurable slow‑blow cartridge fuse
  • Total Module Rated Output Power: 192 W
  • Input Isolation: Galvanic isolation between dual‑redundant input branches
  • Backplane Communication Interface: Trusted IMB Inter‑Module Bus
  • Module Power Consumption: Max 3.2 W
  • Protection Mechanisms: Per‑branch fuse over‑current protection, input reverse‑polarity protection, over‑temperature protection
  • Safety Certification: TÜV IEC 61508 SIL 3, UL, CE
  • Operating Temperature: ‑20 °C ~ +60 °C
  • Storage Temperature: ‑40 °C ~ +85 °C
  • Ambient Humidity: 5 %‑95 % RH non‑condensing
  • Weight: 0.95 kg
  • Form Factor: Standard Trusted rack plug‑in module

Functional Features:

  • Dual‑redundant DC input design, automatic load‑sharing operation for two input power‑sources
  • 8 independent fused power‑output branches, each branch provides separate over‑current fuse‑protection
  • Per‑branch real‑time fault‑diagnostic circuit, detect fuse‑blow, branch‑over‑load and branch‑short‑circuit fault
  • Hot‑swap support for online module replacement without interrupting other normal power‑output branches
  • Front‑panel LED indicator group, display dual‑input power‑health‑status and each output‑branch fault‑alarm status
  • Timestamped branch‑fault‑events upload to system fault historian via IMB backplane bus
  • Hardware‑level fault‑containment, single‑branch fault only triggers local‑branch fuse‑blow, cannot affect other branches and upstream power‑supply
  • Compact‑size layout, adapt to small‑capacity Trusted compact‑rack power‑distribution requirement

Working Principle: Two independent upstream DC power‑sources connect to T8292 dual‑redundant input terminals. Internal power‑OR‑ing circuit completes automatic load‑sharing for two input power‑branches. Input power distributes to 8 independent output branches. Each‑branch current flows through user‑configured fuse‑protection‑unit, then outputs to downstream I/O‑modules or field‑instrument‑loads. On‑board diagnostic‑sampling‑circuit monitors voltage and current‑state of each output‑branch continuously. When branch over‑current fault occurs, corresponding fuse blows to realize fault‑isolation. Diagnostic‑circuit captures fuse‑blow‑signal, triggers front‑panel LED alarm and generates timestamped fault‑event, transmits fault‑information to Trusted main‑system via IMB backplane bus. Single‑branch fault gets limited in local‑branch range, cannot spread to other output‑branches and upstream power‑circuit.

Material Composition & Structural Characteristics:

  • Housing: Die‑cast aluminum alloy shielding shell, realize electromagnetic shielding and auxiliary heat dissipation
  • Circuit substrate: Multi‑layer FR‑4 power‑grade industrial printed circuit board, integrate power‑OR‑ing, fuse‑holder and branch‑diagnostic‑sampling components
  • Backplane connector: Gold‑plated high‑density anti‑vibration industrial connector
  • Front panel: Flame‑retardant PC engineering plastic, embed LED indicator window and fuse‑replacement access holes, protection grade IP20
  • Plug‑in card‑type structure for Trusted rack dedicated compact‑power‑distribution‑slot installation

Installation Requirements:

  • Insert T8292 module into dedicated power‑distribution slot of Trusted compact‑rack chassis, tighten front‑panel locking screws
  • Dual DC input terminals connect to two physically independent upstream DC power‑supply units
  • Select matched‑specification branch fuses strictly according to actual downstream‑load rated‑current
  • Downstream power‑distribution wiring adopt shielded power‑cables, separate routing from high‑voltage AC power‑cables
  • Cabinet protective ground resistance ≤4 Ω
  • Total‑sum‑of‑current of all output‑branches cannot exceed total rated output‑power limit of T8292
  • Avoid installation environment with corrosive‑gas and salt‑fog pollution

Application Scenarios:

  • Compact‑size Trusted safety‑rack multi‑branch fused power‑distribution
  • Skid‑mount process‑equipment small‑scale safety‑instrumented‑system field‑instrument power‑feeding
  • Petrochemical auxiliary‑skid safety‑interlock cabinet multi‑loop protected power‑distribution unit
  • Off‑shore platform container‑type compact safety‑control‑rack power‑distribution infrastructure
  • Chemical‑plant local small‑safety‑subsystem multi‑branch fault‑containment power‑supply

Usage Notes:

  • Hot‑swap operation is permitted only when dual‑redundant input power‑sources maintain normal power‑supply
  • Module shell disassembly is forbidden; internal high‑current power‑circuit exists, zero user‑serviceable internal components except matched‑specification branch fuses
  • Cut off corresponding‑branch downstream‑load power‑supply before replacing branch fuse
  • After module replacement, verify dual‑input redundant‑switching function, each‑branch power‑output function and branch‑fault‑diagnostic‑response performance
  • Operate strictly within rated operating temperature and total‑power‑output specification limits
  • Periodically inspect input‑wiring and output‑branch‑wiring terminal fastening torque and fuse‑integrity‑status

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