Description
GE IS200TRPAH2AHE Primary Trip Terminal Board
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | GE |
| Model | IS200TRPAH2AHE |
| Base Board | IS200TRPAH2A |
| Product Type | Primary Trip terminal board |
| Functional Group | TRPA |
| System | GE Mark VI / Mark VIe turbine protection architecture |
| Protection Architecture | TMR-capable |
| Associated I/O Pack | IS230TNPAH2A |
| Primary Signals | Speed pickup, voltage detection, E-Stop and trip-contact circuits |
| Terminal Interfaces | TB1 / TB2 field terminal blocks |
| Application | Gas turbine primary protection and trip functions |
The documented IS200TRPAH2A architecture supports primary-trip functions including speed inputs, voltage detection, E-Stop input and TMR-voted trip contacts. A GE component cross-reference identifies IS230TNPAH2A as the TMR PTUR I/O pack associated with the IS200TRPAH2A terminal board.
Product Introduction
The GE IS200TRPAH2AHE is a Primary Trip (TRPA) terminal-board assembly associated with GE turbine protection systems. Its function is centered on the hardwired interface between field protection signals and the Mark VI/Mark VIe primary turbine-trip architecture. It is not a general-purpose PLC I/O board or processor.
The base IS200TRPAH2A is documented for applications involving turbine speed sensing, emergency-stop input, voltage monitoring and TMR trip-contact circuitry. The board can work with three PTUR/YTUR I/O packs in a TMR protection arrangement.
Application Scenarios & Field Pitfalls — The Engineer’s Perspective
Engineering Pain Point
A primary-trip fault should not be approached like an ordinary PLC I/O fault. The protection path may remain operational through redundant channels while reporting a diagnostic on one section. Replacing a visually similar terminal board without checking the protection architecture can introduce a second fault or leave the original problem untouched.
The TRPA board should be evaluated as part of the complete field trip circuit → terminal board → I/O pack → turbine protection controller chain.
Typical Applications
- Gas turbine primary protection systems
- GE Mark VI turbine control installations
- Mark VIe turbine protection architectures
- TMR emergency-trip systems
- Aeroderivative turbine protection applications
Technical Pitfalls
1. Do not classify it as a processor.
Some reseller pages incorrectly describe IS200TRPAH2AHE as a redundant processor or computing module. The available component documentation instead identifies the base IS200TRPAH2A as a Primary Trip terminal board.
2. Do not confuse the terminal board with the I/O pack.
The terminal board is IS200TRPAH2A, while the associated TMR PTUR I/O-pack designation is IS230TNPAH2A. These are different hardware elements with different roles.
3. Check the trip architecture before replacement.
The documented TRPAH2A configuration supports three I/O packs for TMR operation. A replacement must therefore be checked against the R/S/T channel arrangement and the installed PTUR hardware.
4. Verify the field wiring.
The base TRPAH2A documentation identifies separate terminal blocks for primary-trip signals, including speed pickup inputs, voltage detection, E-Stop and trip-contact circuits. Wiring should be documented before board removal.
5. Do not assume all TRPA variants are interchangeable.
The H2A designation is associated with a particular primary-trip configuration. The exact suffix AHE should be checked against the original board revision, terminal arrangement, coating, and system bill of materials.
6. Avoid unsupported environmental specifications.
Several commercial listings publish temperature, voltage, frequency and dimensional data that are inconsistent with the documented TRPA function. Those values should not be used for engineering selection without GE documentation for the exact revision.
Related Products
- IS230TNPAH2A — TMR PTUR I/O pack associated with the terminal-board architecture.
- IS230TRPAH2A — Related PTUR/Primary Trip I/O-pack designation in GE’s component documentation.
- IS200TRPAH1A — Related Primary Trip terminal-board variant.
- IS230TNPAH1A — TMR PTUR I/O-pack variant associated with the H1A TRPA board.
- IS230STURH1A — Simplex PTUR I/O pack.
- IS230STURH2A — Related simplex PTUR I/O-pack variant.
- IS200TRPGH1B — Related turbine trip/solenoid interface hardware.
- IS200TREGH1B — Turbine emergency-trip terminal-board family.
- IS220PTURH1A — Related Mark VIe PTUR I/O-pack family.
GE’s component cross-reference distinguishes the TMR PTUR packs from simplex PTUR configurations and associates the TMR packs directly with the TRPA terminal-board family.
Procurement Note
For IS200TRPAH2AHE, the critical procurement checks are:
- Exact board number: IS200TRPAH2AHE
- Base function: TRPA Primary Trip terminal board
- Protection architecture: TMR where configured with three PTUR I/O packs
- Associated I/O pack: IS230TNPAH2A
- Field wiring: Speed, E-Stop, voltage-detection and trip circuits
- Hardware/revision suffix: Confirm from the physical board label
- Existing Mark VI/Mark VIe system configuration
The main sourcing risk is misidentification. Public listings variously call this part a calibration module, processor, thermocouple acquisition module, pulse amplifier, or generic PCB. Those descriptions are not supported by the stronger TRPA/PTUR documentation. The defensible classification is GE Primary Trip terminal board for turbine protection.
For a turbine protection spare, I would require photographs of the board label, connector side, and revision markings if the supplier cannot provide an original GE part-number cross-reference. That is especially important for the AHE suffix, since the publicly available documentation is much stronger for the base than for this exact suffix.
