IS215VPROH2BC GE Emergency Overspeed Protection Board

Triple Redundant Emergency Protection for Turbines

General Electric engineered the IS215VPROH2BC for critical safety applications. This Turbine Protection Board operates within Mark VI Speedtronic systems. It provides independent emergency overspeed protection with triple redundancy for maximum reliability.

Core Technical Specifications

• Manufacturer & Model: General Electric IS215VPROH2BC
• Product Type: Turbine Protection/Emergency Trip Board
• Series: Mark VI Speedtronic System
• Frame Rate: Up to 100 Hz operation
• Power Supply: 125 VDC input from cabinet PDM
• Operating Temperature: 0°C to 60°C
• Redundancy: Triple Modular Redundant (TMR) design

Protection System Architecture

• Triple redundant boards in dedicated Protection Module
• Independent emergency trip function separate from main control
• Three separate sections: X, Y, and Z for maximum reliability
• Can shut down one section while turbine remains operational
• Dedicated emergency overspeed protection system
• Enhanced safety for gas, steam, and wind turbine applications

Trip Solenoid Control

• Controls up to six trip solenoids (three per TREG board)
• Solenoid Response: 0.1 second L/R time constant
• TREG provides positive side of 125 VDC power
• TRPG supplies negative side for complete circuit
• NEMA class E creepage rated solenoid circuits
• 15A maximum fuse voltage rating capability

Input/Output Signal Types

• Economizing relays for efficiency optimization
• Emergency stop inputs for immediate shutdown
• Trip interlock inputs for coordinated protection
• Trip solenoid drivers for actuation control
• Seven trip interlock inputs per processor
• Three trip solenoid drivers per TREG board

Power Supply System

• Onboard power supply on each VPRO board
• Generates 5 VDC and 28 VDC from 125 VDC input
• Three independent power supplies in protection module
• Power drawn from cabinet Power Distribution Module
• Ensures stable voltage for optimal board operation
• Redundant design minimizes power supply failure impact

Communication & Connectivity

• Ethernet connection for IONet communications
• Connects to control modules for data exchange
• Interfaces with TPRO terminal board via Ethernet cable
• Simplex Systems: J1 cable to TSVO for trip signals
• Enables servo valve clamp function upon turbine trip
• Streamlined control architecture with minimal connections

Speed Monitoring Capabilities

• MPU Input: 27 mV peak minimum sensitivity at 2 Hz
• Pulse Rate Range: 2 Hz to 20 kHz operation
• Accuracy: Percentage of reading precision
• Monitors turbine speed for overspeed detection
• Critical data for emergency protection decisions
• High-sensitivity input for accurate measurements

Relay Control System

• Controls 12 relays on TREG terminal board
• Nine relays form three voting groups of three
• Voting mechanism controls three trip solenoids
• Centralized control streamlines system operation
• Redundant relay control enhances system reliability
• TREG entirely controlled by VPRO boards

Diagnostic Functions

• K25A Relay Mismatch: Detects driver state discrepancies
• Coil Trouble Detection: Identifies cabling or power issues
• Auto synchronous function diagnostics
• Open circuit detection between terminal boards
• Power source availability verification
• Configuration setting validation

System Integration

• Primary I/O processor for TPRO and TREG boards
• Simplified connections: J2 power cable and trip solenoids
• Dedicated protection module housing
• Independent from main turbine control system
• Compatible with gas, steam, and wind turbine applications
• Enhanced functionality over previous Mark V systems

Safety Features

• Independent emergency trip function
• Triple redundancy for maximum reliability
• Redundant power supply design
• Servo valve clamp function in simplex systems
• Controlled shutdown capability
• Comprehensive diagnostic monitoring

Product Availability

• Current Status: In stock for immediate shipment
• New and original General Electric component
• Two-fold revision history (B and C revisions)
• Manufactured in the United States
• Complete with necessary documentation
• Ready for integration into protection systems

Shipping & Delivery

• Fast shipping via FedEx, UPS, and DHL services
• Orders typically ship within 24 business hours
• International shipping available worldwide
• Complete tracking information provided
• Professional packaging ensures board protection

Frequently Asked Questions (FAQ)

What is the primary function of this board?

• The IS215VPROH2BC provides triple redundant emergency overspeed protection and trip functions for turbine systems.

How many trip solenoids can it control?

• It can control up to six trip solenoids, with three solenoids managed per TREG terminal board.

What redundancy features are included?

• Features triple redundant design with three independent sections (X, Y, Z) that can operate individually if needed.

What power supply does it use?

• Each board has its own onboard power supply generating 5VDC and 28VDC from 125VDC cabinet input.

How does it communicate with other components?

• Uses Ethernet for IONet communications and interfaces with TPRO/TREG boards via dedicated connections.

What diagnostic capabilities are included?

• Includes diagnostics for relay mismatches, coil troubles, auto synchronous functions, and circuit continuity checks.