Description
The GE General Electric IS200TREGH1A, also identified as IS200TREGH1AAA, is a Turbine Emergency Trip Terminal Board designed for the GE Mark VI Speedtronic turbine control system. The TREG board works with the VPRO turbine protection system and associated TPRO/TRPG boards to manage emergency trip circuits and trip solenoids. It provides the positive DC side for up to three emergency trip solenoids and supports trip interlock, emergency stop, overspeed protection, relay voting, and diagnostic functions. The board includes 12 relays, with nine arranged into three voting groups for the three trip solenoid circuits. It can be used in Simplex and Triple Modular Redundant (TMR) turbine control configurations.
| Parameter | Specification |
|---|---|
| Brand | GE General Electric |
| Model | IS200TREGH1A |
| Full Part Number | IS200TREGH1AAA |
| Series | Mark VI / IS200 |
| Product Name | Gas Turbine Emergency Trip Board |
| Functional Type | Turbine Emergency Trip Terminal Board |
| Main Function | Emergency trip, solenoid control, trip interlock and protection interface |
| Trip Solenoids | Up to 3 |
| Relay Configuration | 12 relays; 9 used in three voting groups |
| Trip Input Voltage | 24 VDC / 125 VDC applications |
| Place of Manufacture | USA |
| Product Status | New |
| Discontinued | Legacy Mark VI component; H1B is identified as the later version for new production |
Key Features
• Designed for GE Mark VI Speedtronic turbine control systems
• Interfaces with VPRO turbine protection/control hardware
• Supports three emergency trip solenoid circuits
• Provides positive DC power to the trip solenoid circuits
• Supports emergency stop and turbine trip interlocks
• Relay voting architecture supports redundant protection arrangements
• Suitable for Simplex and TMR system configurations
• Board identification devices provide revision, serial number, board type, and connector-location information
• Supports online testing of individual trip solenoid circuits through the control/protection system
Common Questions & Answers
Q: What is the IS200TREGH1A used for?
A: It is used as a turbine emergency trip terminal board in GE Mark VI turbine control systems, providing the interface and relay circuitry associated with emergency trip solenoids and protection functions.
Q: How many trip solenoids can the TREG board support?
A: The TREG configuration supports up to three emergency trip solenoids.
Q: What is the relationship between TREG and TRPG?
A: TREG provides the positive side of the DC supply to the trip solenoids, while TRPG provides the negative side in the associated trip circuit.
Q: Can the IS200TREGH1A be used in a TMR system?
A: Yes. The board is used in both Simplex and Triple Modular Redundant turbine protection/control configurations.
Q: Is IS200TREGH1AAA the same product designation?
A: IS200TREGH1AAA is a full assembly/board identification associated with the IS200TREGH1A model. Always verify the complete board number, revision, connector arrangement, and system configuration before replacement.
Q: What should be checked before installation?
A: Confirm the exact GE part number and revision, system architecture, trip-solenoid voltage, connector wiring, terminal assignments, and compatibility with the associated VPRO/TPRO/TRPG hardware.
Safety & Troubleshooting Notes
• Disconnect and isolate turbine control power before removing or installing the board.
• Emergency trip circuits are safety-critical; verify wiring and protection logic against the applicable GE documentation before commissioning.
• Check the trip-solenoid supply, relay feedback, interlock inputs, and connector identification if a trip circuit reports a fault.
• Inspect connectors and terminal wiring for loose connections, oxidation, or damaged conductors.
• Do not substitute another TREG revision solely because the model number appears similar; verify system compatibility first.
Recommended GE Models
- IS200TREGH1B — Trip Emergency Termination Board
- IS200TREGH2B — Trip Emergency Terminal Board
- IS200TREGH5BDC — Trip Emergency Terminal Board
- IS200TPROH1A — Protective Termination Board
- IS200TPROH1B — Protective Termination Board
- IS200TPROH1BAA — Turbine Protection Board
- IS200TPROH1BCB — Protective Termination Board
- IS200TRESH1A — Emergency Trip Termination Board
- IS200TRLYH1B — Relay Termination Board
- IS200TRLYH2E — Relay Termination Board
- IS200STCIH1A — Contact Input Terminal Board
- IS200STCIH6ADD — Contact Input Terminal Board
- IS200STAIH2A — Analog Input Terminal Board
- IS200TBAIH1C — Trip/Analog Input Termination Board
- IS200TBCIH1C — Contact Input Termination Board
