GE VPROH2B IS215VPROH2BC is an independent emergency protection processor board for GE Speedtronic Mark VI turbine control system, dedicated to overspeed monitoring, emergency trip and safety interlock for gas and steam turbines.

Product Overview

GE VPROH2B IS215VPROH2BC, also known as VPRO protection board, is a critical safety card in the GE Speedtronic Mark VI turbine control rack. It runs independent protection logic separated from the main control processor, responsible for high-speed overspeed detection, emergency trip command output and safety shutdown interlock. It supports TMR triple modular redundant configuration to reduce the risk of false trip and improve system safety reliability. It collects signals from speed probes and temperature sensors, executes fast protection judgment, and communicates with other control boards through the VME backplane. It is widely used on gas turbine and steam turbine units in power plants, and is a high-demand spare part for turbine control system maintenance and retrofit.

Key Features

• Independent emergency protection processor for Mark VI Speedtronic turbine system
• Specialized for overspeed protection, emergency trip and safety interlock logic
• Supports TMR triple redundant voting architecture for high safety requirements
• Operates separately from main control CPU, ensuring protection works when main control fails
• Multiple D-Sub ports for signal wiring and diagnostics, onboard Ethernet for debugging
• High-speed signal response to meet turbine fast trip requirement
• Built-in self-test and fault diagnosis functions with status indicators

• Rugged industrial board design, stable operation under turbine hall vibration and temperature fluctuation

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Technical Specifications

• Brand: GE
• Model: VPROH2B
• Part No: IS215VPROH2BC
• Type: Turbine Emergency Protection Processor Board
• Compatible Platform: GE Speedtronic Mark VI
• Installation: VME rack mount
• Redundancy Mode: Simplex / TMR optional

• Main Function: Overspeed protection, emergency trip, safety interlock

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Application

Gas turbine safety protection, steam turbine overspeed monitoring, power plant Mark VI control rack replacement, generator set emergency shutdown interlock, combined cycle unit turbine control system.