The IS200VPROH1A is a circuit board component made by General Electric for use within their Mark VI gas/steam turbine control system. The Mark VI is typically used for electrical generation or process plant applications, for the control of turbine speed, generator synchronization, turbine load control, and protection from loss of load.
The IS200VPROH1A functions as a Turbine Protection Module. This board takes up more than one slot in the rack system. It provides emergency overspeed protection for turbines lacking a mechanical overspeed bolt. The module is designed to be separate from the rest of the turbine control system. In a TMR system, each of the VPRO boards has its own on-board power supply. The IS200VPROH1A controls trip solenoid boards using the TREG board.
The IS200VPROH1A has a very wide front faceplate that is populated with several lines of components. This includes LED indicators, a power switch, four D-shell cable connectors, an IONet port, and an Ethernet (male) plug port. The faceplate is marked with the GE logo and with the board identifying number. It connects to the circuit board using screw connections.
The IS200VPROH1A has two board components that are stacked together. Both boards have two backplane connectors. The top board has a large heat sink attached to its surface. Both boards are populated with other components including resistors, test points, capacitors, integrated circuits, and transformers.
For additional information regarding the IS200VPROH1A, its specifications, or for detailed installation procedures, please refer to GE documentation like user guides and manuals. AX Control may have copies of these documents available if your originals have been lost or misplaced.