GE Mark VIe IS200TREAH2A Emergency Trip Board

Product Overview

The IS200TREAH2A is a Turbine Emergency Trip Terminal Board manufactured by General Electric for the Mark VIe control system. This critical safety component provides emergency trip functionality and works in conjunction with PPRO turbine I/O packs for reliable turbine protection.

Technical Specifications

• Manufacturer: General Electric (GE)
• Part Number: IS200TREAH2A
• Product Type: Turbine Emergency Trip Terminal Board
• Series: Mark VIe Control System
• Dimensions: 33.0 cm H × 17.8 cm W (13.0" × 7.0")
• Technology: Surface-Mount Component Design
• Operating Temperature: -30°C to 65°C (-22°F to 149°F)
• Country of Origin: United States of America (USA)

Customer Input Terminals

• Terminal Options: Two 24-Point Pluggable Barrier Blocks (H1A, H2A)
• Alternative Terminals: 48 Pluggable Euro-Style Box Terminals (H3A, H4A)
• Terminal Access: Easy Customer Input Connection Points
• Design Flexibility: Multiple Terminal Configuration Options
• Connection Reliability: Industrial-Grade Terminal Design

Speed Sensing Features

• Pulse Rate Devices: Nine Passive Pulse Rate Sensors
• Distribution: Three Devices per X/Y/Z Section
• Sensing Method: Toothed Wheel Speed Measurement
• Application: Turbine Speed Monitoring and Protection
• Accuracy: Reliable Speed Detection for Safety Systems

Output Contact Configuration

• Low Voltage Contacts: 24 VDC Output Contacts (H1A, H3A)
• High Voltage Contacts: 125 VDC Output Contacts (H2A, H4A)
• Voting System: TMR Voted Output Contacts
• Trip Function: Emergency System Trip Activation
• Reliability: Redundant Contact Design

Voltage Detection Circuits

• Circuit Quantity: Four Independent Detection Circuits
• Voltage Range: 24-125 VDC Monitoring Capability
• Monitoring Function: Trip String Integrity Verification
• Safety Feature: System Voltage Status Monitoring
• Application: Emergency Trip System Supervision

Jumper & Expansion Features

• Jumper Blocks: Speed Input Fanning to Three PPRO Packs
• Synchronization: Ensures Speed Input Consistency
• Redundancy: Multiple PPRO Pack Input Support
• Daughterboard Connectors: Optional Feature Expansion Capability
• System Flexibility: Customizable Configuration Options

Voltage Monitoring Applications

• General Purpose Sensors: Three Isolated Voltage Sensor Inputs
• Power Supply Monitoring: PWR Voltage Status Verification
• Solenoid Monitoring: SOL1 and SOL2 Voltage Supervision
• Trip System Monitoring: Multiple Point Voltage Status
• Controller Communication: Voltage Data Transmission to System Controller
• Flexible Application: Versatile Sensor Usage Options

Trip Relay Design

• Relay Configuration: Six Individual Form Devices per Set
• Voting Pattern: Two Controllers Vote to Close Relay
• Conduction Path: Established When Relay Activated
• Redundancy: Multiple Controller Voting System
• Reliability: Critical Safety Function Design

Short Detection Circuitry

• Sensing Circuit: Individual Relay Set Monitoring
• Short Detection: Voltage Presence Detection When Open
• Alarm Generation: Signal to PPRO I/O Pack for Alerts
• False Indication Prevention: Inputs from All Three PPRO Packs
• System Integrity: Comprehensive Relay Status Monitoring

System Integration

• PPRO Compatibility: Designed for PPRO I/O Pack Collaboration
• Control System: Mark VIe Platform Integration
• Safety Function: Critical Turbine Emergency Protection
• Industrial Application: Power Generation Safety Systems
• System Architecture: Integral Trip System Component

Key Features

• Nine Passive Pulse Rate Devices for Speed Sensing
• TMR Voted Output Contacts (24VDC and 125VDC)
• Four Voltage Detection Circuits (24-125VDC Range)
• Multiple Terminal Configuration Options
• Comprehensive Voltage Monitoring Capabilities
• Advanced Short Detection and Alarm Generation
• Flexible Jumper Configuration for Input Fanning

Application Areas

• Gas Turbine Emergency Trip Systems
• Steam Turbine Safety Protection
• Power Generation Plant Safety Circuits
• Industrial Turbine Control Systems
• Critical Process Safety Interlocks
• PPRO I/O Pack Integration Systems

Safety & Reliability Features

• Redundant Design: Multiple Independent Safety Paths
• Continuous Monitoring: Real-time System Status Verification
• Fault Detection: Comprehensive Short Circuit Detection
• Alarm System: Immediate Fault Notification Capability
• Industrial Standards: GE Mark VIe System Compliance

Frequently Asked Questions

What is the primary function of this board?
The IS200TREAH2A serves as a Turbine Emergency Trip Terminal Board, providing critical emergency trip functionality and speed monitoring for Mark VIe turbine control systems.

How does the speed sensing work?
The board uses nine passive pulse rate devices (three per X/Y/Z section) to sense a toothed wheel, accurately measuring turbine speed for protection functions.

What voltage outputs are available?
The board provides two sets of output contacts: 24VDC contacts (H1A, H3A) and 125VDC contacts (H2A, H4A) for TMR voted trip outputs.

How does the short detection system work?
A sensing circuit monitors each relay set; if voltage remains when relays should be open, it detects shorts and sends alarm signals to the PPRO I/O packs.

What temperature range does it support?
The board operates from -30°C to 65°C (-22°F to 149°F), suitable for harsh industrial environments in power generation applications.

Contact Information

• Sales Inquiries: sales@nex-auto.com
• Phone/WhatsApp: +86 153 9242 9628

Partner: AutoNex Controls Limited