ICS Triplex T8220

ICS Triplex T8220

Product Brief Introduction: T8220 is a rack‑mounted fault‑tolerant power supply unit for Trusted TMR safety rack. It converts universal AC mains input into regulated 15 VDC internal backplane power for TMR processor modules and IMB inter‑module backplane bus. Dual independent AC input circuits deliver power redundancy, maintain continuous safety‑system operation under single AC source loss. This module undertakes core power conversion for main Trusted safety chassisRunto Elec…

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Description

ICS Triplex T8220

Technical Specifications & Performance Parameters:

  • AC Input Range: 85 V AC ~ 264 V AC universal input
  • Input Frequency: 47 Hz ~ 63 Hz
  • Input Configuration: Dual independent AC input channels for redundant power feeding
  • DC Output: Regulated +15 VDC
  • Rated Output Power: 250 W at 50 °C; derate to 187.5 W at 60 °C
  • Maximum Output Current: 16.7 A
  • Conversion Efficiency: 92 % under full‑load operating condition
  • Output Ripple Noise: 10 mV peak‑to‑peak
  • Protection Mechanisms: Over‑voltage protection, over‑current protection, over‑temperature shutdown, inrush‑current limiting
  • Safety Certification: TÜV IEC 61508 SIL 3, UL, CE
  • Operating Temperature: ‑20 °C ~ +50 °C
  • Storage Temperature: ‑40 °C ~ +85 °C
  • Ambient Humidity: 5 %‑95 % RH non‑condensing
  • Weight: 1.20 kg
  • Form Factor: Standard Trusted rack plug‑in module

Functional Features:

  • Dual fully‑isolated AC input paths, automatic switch‑over upon one AC supply failure
  • Hot‑swap support, online module replacement without safety‑system shutdown
  • Complete internal real‑time diagnostics, monitor input voltage, output voltage, output current and internal component temperature
  • Front‑panel multi‑LED indicator array, display input power status, output health status and fault alarm status
  • Built‑in inrush‑current suppression circuit, eliminate power‑on surge impact to plant power grid
  • Over‑temperature automatic derating and shutdown logic, prevent permanent hardware damage under over‑heat condition
  • Fault events carry high‑precision timestamps and upload to system fault historian via rack backplane bus
  • Support natural‑convection cooling and forced‑air cooling for cabinet‑layout flexibility
  • Internal isolation barrier separates AC high‑voltage circuit and low‑voltage DC safety domain

Working Principle: Two independent AC input circuits receive mains power simultaneously. Each AC channel passes EMI filter, rectifier circuit and power‑factor correction unit. High‑frequency switching conversion circuits generate stable regulated 15 VDC output. Two power conversion branches perform active load sharing to supply current to Trusted rack internal backplane. On‑board monitoring circuit continuously samples input, output and thermal parameters. When abnormal condition occurs, module triggers protection action and asserts fault flag. Single AC input branch failure cannot interrupt DC output power supply to safety‑system hardware.

Material Composition & Structural Characteristics:

  • Outer housing: High‑strength die‑cast aluminum alloy shell, provide electromagnetic shielding and auxiliary heat dissipation
  • Internal circuit substrate: Multi‑layer FR‑4 high‑temperature industrial printed circuit board, adopt high‑reliability power semiconductor devices
  • Backplane connector: Gold‑plated high‑density anti‑vibration industrial connector, resist oxidation for long‑term cabinet operation
  • Front panel: Flame‑retardant PC engineering plastic, embed LED indicator window and specification label area
  • Overall card‑type plug‑in construction, protection grade IP20, install inside Trusted main chassis dedicated power‑supply slot

Installation Requirements:

  • Insert T8220 module into dedicated power‑supply slot of Trusted main rack chassis, tighten front‑panel locking screws
  • Connect two independent AC power sources from separated upstream power distribution loops for redundancy purpose
  • AC input wiring use flame‑retardant industrial power cables, match local electrical code requirements
  • Cabinet protective ground resistance stays below 4 Ω
  • Maintain unobstructed air convection around module surface for heat dissipation, avoid local hot‑spot accumulation
  • Do not install in location with heavy salt‑fog, corrosive gas or continuous strong mechanical shock
  • Configure external upstream fuse protection for each AC input loop

Application Scenarios:

  • Trusted TMR main safety rack internal backplane power supply
  • Petrochemical ESD emergency‑shutdown system core power conversion unit
  • Fire‑gas safety monitoring system fault‑tolerant power infrastructure
  • Chemical plant SIL 3 safety interlock control cabinet power supply
  • Off‑shore platform safety instrumented system main rack power source

Usage Notes:

  • Execute hot‑swap operation only when remaining redundant power‑input path maintains full‑capacity power output
  • Module shell disassembly is forbidden; internal high‑voltage circuit exists, zero user‑serviceable internal components
  • Strictly observe power‑derating rules when cabinet ambient temperature exceeds 50 °C
  • After module replacement, verify AC dual‑input switching function, DC output voltage accuracy and full diagnostic functions
  • Operate strictly within defined operating temperature range
  • Periodically inspect AC wiring terminal fastening torque and cabinet ventilation condition

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