GE IS220PTURH1A

Product Overview

The IS220PTURH1A is a primary turbine protection (PTUR) I/O pack developed by GE for the Mark VIe Speedtronic platform, dedicated to core overspeed protection, emergency trip logic, and turbine speed monitoring in gas, steam, and combined-cycle power generation. It integrates four passive magnetic speed inputs, emergency trip solenoid outputs, and synchronization monitoring to deliver independent, hardware-enforced protection that operates alongside the primary control system. The module includes dual 10/100 Mbps Ethernet ports for IONet communication, direct interfaces to TTURH1C terminal boards via a DC-62 pin connector, and a local processor for deterministic protection logic execution. It supports simplex, dual, or triple modular redundancy (TMR) configurations, features front-panel LED diagnostics for power, communication, and fault status, and enables automatic reconfiguration (baseload, bootloader, firmware, parameters) via ToolboxST.

Category: GE

Description

Technical Specifications

Parameter	Details
Model Number	IS220PTURH1A
Manufacturer	General Electric (GE Boards & Turbine Control)
Module Type	Primary Turbine Protection (PTUR) I/O Pack
Series Compatibility	Mark VIe Speedtronic Turbine Control Systems
Functional Revision	1A
Form Factor	Modular PCB Assembly (Rack-Mounted)
Power Supply	27.4–28.6 VDC (nominal 28 VDC)
Power Consumption	10 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)	8.26 cm × 4.19 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	TTURH1C, TRPAH1A, TRPAH2A

I/O Interfaces

I/O Type	Quantity	Details
Passive Speed Inputs	4	Magnetic pickup, 2–10,000 RPM range, 2500 V isolation
Emergency Trip Outputs	3	28 VDC, 5 A per channel (peak), 2500 V isolation, sub-10 ms response
Synchronization Inputs	2	Generator voltage/frequency and bus voltage monitoring
Communication	2 × Ethernet (IONet), 1 × Status Port	Dual 10/100 Mbps IONet for Mark VIe integration; LED pairs for PWR/ATTN, ENET1/ENET2, Fault, Trip Active
Indicators	6 Front-Panel LEDs	PWR, ATTN, ENET1 LINK/TxRx, ENET2 LINK/TxRx, Fault, Trip Active
Connector	1 × DC-62 Pin	Interfaces to TTURH1C terminal boards for field wiring

Function Features

Four Passive Speed Inputs: Monitors turbine speed from 2 RPM (turning gear) to 10,000 RPM, using median speed signals for primary overspeed trips and control.
Hardware-Enforced Overspeed Protection: Delivers sub-10 ms response to overspeed conditions without relying on software processing.
Emergency Trip Logic: Directly drives trip solenoids to initiate turbine shutdown during critical faults (overspeed, loss of lubrication, fire).
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 and configuration.
Automatic Reconfiguration: Downloads baseload, bootloader, firmware, and parameters from the controller when enabled via ToolboxST.
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.
TTURH1C 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.
Synchronization Monitoring: Validates generator-bus synchronization to prevent grid disturbances during startup.

Application Scenarios

Gas Turbines: Provides primary overspeed protection and emergency trip logic for heavy-duty and aeroderivative gas turbines in power generation and industrial applications.
Steam Turbines: Monitors speed and executes emergency shutdowns for steam turbines in thermal and combined-cycle power plants.
Combined-Cycle Power Plants: Integrates with heat recovery steam generators (HRSGs) to ensure coordinated protection across gas and steam turbine trains.
Turbine Overspeed Protection: Acts as the first line of defense against overspeed events to prevent catastrophic turbine damage.
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 PTUR modules in Mark VIe upgrades, enhancing protection reliability and diagnostics.

Compatibility and Integration

Mark VIe Ecosystem: Fully compatible with Mark VIe controllers, TTURH1C terminal boards, and TRPAH1A/TRPAH2A 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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