IS200TRPLH1A

About the IS200TRPLH1A

• The Mark VI Series represents a significant upgrade over the preceding Mark V Series, expanding functional applications beyond gas and steam turbines to include wind turbine applications.
• The Mark VI Series is also considered an attractive GE Mark product line as it's one of the brand's final Mark Series to utilize the patented Speedtronic control system technology across a wide range of GE products.

Hardware Tips and Specifications

• The IS200TRPLH1A functions as a Large Steam Turbine Primary Trip terminal card, providing primary overspeed protection for large steam turbines.
• Control of the board is managed by the turbine protection controller card, typically a VTUR or PTUR board depending on the system type.
• The TRPL board is compatible with both Mark VI and Mark VIe Control Systems:
  • In a Mark VI system, it's controlled by the VTUR and supported in TMR (Triple Modular Redundancy) applications.
  • In a Mark VIe system, it's controlled by the PTUR I/O packs on the TTURH1C model and also supported in TMR applications.
• It works in conjunction with a TREL board to provide emergency/primary interfaces to the ETDs. The TRPL provides the negative 125 VDC to trip solenoids, while the TREL offers the positive side.
• Together, the TREL and TRPL boards can connect up to three solenoids.
• The IS200TRPLH1A is populated with:
  • Two large terminal strips (total of 48 connector points)
  • Three D-shell connectors
  • MOV (metal oxide varistors) diodes
  • Resistors, transistors, integrated circuits
  • Wire jumpers
  • Nine magnetic relays

Relay Operation and Safety

• The board's relays are arranged in three voting circuits that interface with three trip solenoids.
• The solenoids utilize a two-out-of-three contact voting scheme.
• Trip circuits include solenoid suppression and voltage monitoring.
• It's crucial to understand the product-specific installation and replacement requirements due to the potential presence of damaging or lethal surface voltages on the PCB.
• Installation requirements include:
  • Usage of a standard wrist grounding strap.
  • Direct connection of wires for three trip solenoids to the first I/O terminal block.
  • Additional wire connections for primary emergency stop and optional secondary terminal block emergency stops.
  • Final trip power solenoid connection.