IS200VPROH1BCA

About the IS200VPROH1BCA

The IS200VPROH1BCA is part of the Mark VI system, which is most often used for the protection and control of industrial gas or steam turbines.  The MKVI is one of several Speedtronic systems released by GE over the years, with each system making improvements over the last.  Some benefits of the MKVI include IONet Ethernet communication capabilities and the flexibility of design to be set up as either a TMR/triple modular redundant or as a simplex system, depending on the associated turbine system’s size and complexity. 

The IS200VPROH1BCA acts as an Emergency Turbine Protection board.  It works together with two other boards, the TPRO and TREG to provide emergency stop and overspeed protection for the system.  These are separate from the main turbine control system.  

The IS200VPROH1BCA, as an H1B board, supersedes the design of similar H1A boards.  Either H1A or H1B board can support an extra TREG board using its J4 connector.  However, H2B boards cannot. 

Attached to the front of the IS200VPROH1BCA is a double-wide faceplate.  This connects to the main circuit boards via screw connections.  The faceplate is built with clips that hold the unit securely in place once it has been installed into a rack system.   One is marked with the GE logo while the other carries the board’s identifying number.

The IS200VPROH1BCA has two stacked boards behind its faceplate.  These are populated by a total of four backplane connectors, along with integrated circuits, resistors, transformers, testpoints, capacitors, and other components.  The top board also has a large heat sink component along the front edge of the board. 

Use GE manuals, user guides, or other publications for more information.