Features:
- Processes emergency turbine protection independently from the main Mark VI controller.
- Operates as one path in a triple-redundant VPRO protection arrangement.
- Controls twelve TREG relays arranged in three turbine-trip groups.
General Electric IS215VPROH2BC receives protection signals through dedicated VPRO terminal hardware instead of ordinary control I/O.
The three protection processors evaluate their assigned inputs independently before the relay groups form the hardwired trip result.
TPRO carries the speed-related interface while TREG provides the relay termination between the VPRO processors and the turbine trip circuit.
The General Electric IS215VPROH2BC VPRO Emergency Turbine Protection Board may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
General Electric IS215VPROH2BC VPRO Emergency Turbine Protection Board Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Redundant VPRO processing
- Three paths: Three VPRO processors evaluate protection inputs through independent channels.
- Decision structure: Each processor contributes to the protection vote instead of one board controlling the entire trip.
- Emergency role: The processors handle emergency trip functions separately from normal turbine sequencing.
- Revision matching: The complete IS215VPROH2BC identifier must be retained when matching an installed board.
Dedicated protection interfaces
- TPRO role: TPRO terminates the speed-related protection inputs used by the VPRO subsystem.
- TREG role: TREG carries the emergency trip relays controlled by the VPRO processors.
- Signal separation: Protection wiring stays on dedicated terminal hardware rather than general Mark VI I/O.
- Replacement check: Both terminal-board type and VPRO board revision should be recorded before substitution.
Relay-group organization
- Relay count: The VPRO arrangement controls twelve relays on the TREG board.
- Group count: The twelve relays are divided into three trip groups.
- Hardwired result: The grouped relay outputs connect the processor decisions to the turbine trip circuit.
- Fault isolation: Separate groups preserve the redundant hardware paths through the final trip interface.
Independent protection chain
- Controller separation: VPRO protection does not depend on the main turbine controller for its core emergency-trip decision.
- Input route: Dedicated terminal boards carry protection signals to the VPRO processors.
- Output route: Trip decisions leave the processors through TREG relay groups.
- Installation identity: Board position, full catalog number, and connected terminal hardware define the installed protection path.