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GE IS220PDOAH1A
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GE IS220PTURH1A
GE IS220PTURH1A

GE IS220PPROH1A

Product Overview

The IS220PPROH1A is a specialized Backup Turbine Protection (PPRO) I/O pack engineered by GE for the Mark VIe Speedtronic platform, dedicated to independent emergency trip and overspeed protection in aeroderivative gas turbines. It delivers a fully autonomous backup protection layer that operates independently of the primary turbine control system, integrating hardware-based overspeed detection, three-speed signal monitoring (overspeed, acceleration, deceleration), and generator synchronization checks. The module includes dual 10/100 Mbps Ethernet ports for IONet communication, a local processor for deterministic protection logic, and direct interfaces to trip solenoids and field sensors. It supports simplex, dual, or triple modular redundancy (TMR) configurations, features front-panel LED diagnostics for power, communication, and fault status, and is hot-swappable for maintenance without system shutdown.
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Description

Technical Specifications

Parameter Details
Model Number IS220PPROH1A
Manufacturer General Electric (GE Energy, Boards & Turbine Control)
Module Type Backup Turbine Protection (PPRO) I/O Pack
Series Compatibility Mark VIe Speedtronic Turbine Control Systems
Functional Revision A
Form Factor Modular PCB Assembly (Rack-Mounted)
Power Supply 24 VDC (nominal), 20–30 VDC operating range
Power Consumption 6 W (typical)
Isolation 2500 V RMS (channel-to-channel, channel-to-ground)
Operating Temperature -40°C to +70°C
Storage Temperature -40°C to +85°C
Relative Humidity 10–95% (non-condensing)
Dimensions (H×W×D) 8.3 cm × 4.2 cm × 12.1 cm (3.25 in × 1.65 in × 4.78 in)
Weight 0.45 kg (1.0 lb)
Communication Interfaces 2 × 10/100 Mbps Ethernet (IONet), Front-Panel Status Port
Certifications UL Class I Division II, ATEX Zone 2, IEC 61010
Manual Reference GEH-6721L (Mark VIe I/O Module User Guide)
Terminal Board Compatibility TREAH, TRPG/TREG, TRPL/TREL, TRPS/TRES

I/O Interfaces

I/O Type Quantity Details
Speed Inputs 3 Overspeed, acceleration, deceleration; 0–10 kHz frequency range, 2500 V isolation
Trip Solenoid Outputs 3 24 VDC, 5 A per channel (peak), 2500 V isolation, sub-10 ms response time
Synchronization Check Inputs 1 Generator voltage/frequency monitoring for utility bus synchronization
Communication 2 × Ethernet (IONet), 1 × Status Port Dual 10/100 Mbps IONet for Mark VIe controller integration; LED pairs for PWR/ATTN, ENET1/ENET2, and Fault
Indicators 6 Front-Panel LEDs PWR, ATTN, ENET1 LINK/TxRx, ENET2 LINK/TxRx, Fault, Trip Active

Function Features

  • Independent Backup Protection: Operates fully autonomous of the primary control system to ensure trip activation during primary system failures.
  • Hardware-Based Overspeed Protection: Delivers sub-10 ms response to overspeed conditions without relying on software processing.
  • Three-Speed Signal Monitoring: Accepts overspeed, acceleration, and deceleration inputs for comprehensive turbine speed surveillance.
  • Generator Synchronization Check: Validates generator bus synchronization to prevent grid disturbances during startup.
  • Redundancy Support: Configurable for simplex, dual, or TMR operation to maximize availability in critical applications.
  • Dual Ethernet IONet: 2 × 10/100 Mbps ports enable high-speed, deterministic communication with Mark VIe controllers for status reporting.
  • Front-Panel Diagnostics: 6 LEDs provide real-time status of power, network activity, faults, and trip activation for rapid troubleshooting.
  • Hot-Swappable Design: Edge connectors allow module replacement without system shutdown, minimizing maintenance downtime.
  • ToolboxST Compatibility: Supports remote configuration, firmware updates, and protection logic verification via GE’s ToolboxST software.
  • TREAH Terminal Board Integration: Reduces wiring complexity and improves connection reliability with dedicated terminal board interfaces.
  • Hazardous Location Compliance: Certified for UL Class I Division II and ATEX Zone 2, enabling use in explosive atmospheres.
  • Independent Watchdog Function: Monitors primary control system health and triggers backup trip if anomalies are detected.

Application Scenarios

  • Aeroderivative Gas Turbines: Provides independent emergency trip and overspeed protection for aeroderivative turbines in power generation and industrial applications.
  • Turbine Overspeed Protection: Detects and responds to overspeed conditions with hardware-based logic to prevent catastrophic turbine damage.
  • Generator Synchronization: Validates generator bus synchronization to ensure safe grid connection and prevent voltage/frequency mismatches.
  • Critical Safety Systems: Supports TMR configurations for emergency shutdown (ESD), fire suppression, and overspeed protection in nuclear and fossil fuel power plants.
  • Hazardous Industrial Environments: Operates safely in Class I Division II and ATEX Zone 2 locations, such as refineries and chemical plants.
  • Turbine Retrofits: Direct replacement for legacy PPRO modules in Mark VIe upgrades, enhancing protection reliability and diagnostics.
  • Primary Control Watchdog: Acts as an independent monitor to ensure primary control system integrity and trigger backup trips if needed.

Compatibility and Integration

  • Mark VIe Ecosystem: Fully compatible with Mark VIe controllers, TREAH terminal boards, and TRPG/TREG trip boards for seamless integration.
  • Software Support: Configurable via ToolboxST for protection logic setup, trip threshold adjustment, and diagnostic monitoring.
  • IONet Communication: Dual Ethernet ports enable real-time status reporting to Mark VIe controllers while maintaining protection independence.
  • Redundancy Configurations: Supports simplex, dual, or TMR operation to meet safety integrity level (SIL) requirements.
  • Documentation: Detailed guidelines available in the GE Mark VIe I/O Module User Guide (GEH-6721L) and Turbine Protection System Integration Manual.
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