Description
The GE General Electric IS200TRPAS1A, with the extended identification IS200TRPAS1AFD, is a Primary Trip Board used in GE Mark VI Speedtronic turbine control systems. It forms part of the Turbine Specific Primary Trip I/O assembly and interfaces with primary trip, E-stop, speed, voltage detection, and contact-output circuits. The board supports both simplex and TMR system architectures and provides two 24-position screw terminal blocks along with six multi-pin connectors and two backplane connectors. GE documentation also identifies IS200TRPAS1A as an accessory terminal board for the IS220YTURS1A turbine-specific primary trip module.
| Parameter | Specification |
|---|---|
| Brand | GE General Electric |
| Model | IS200TRPAS1A |
| Full Part Number | IS200TRPAS1AFD |
| Series | Mark VI Speedtronic |
| Product Name | Primary Trip Terminal Board |
| Functional Acronym | TRPA |
| Application | Turbine Specific Primary Trip |
| Voltage Detection Input | 16–140 VDC |
| E-Stop Input | 18–140 VDC |
| Speed Input | -15 to +15 VDC |
| Contact Output | 24 VDC nominal, 28 VDC maximum |
| Terminal Blocks | 2 × 24-position screw terminals |
| Multi-Pin Connectors | 6 × 37-pin connectors |
| Product Status | Legacy / Mark VI |
| Condition | Verify actual listing condition |
Key Features
• Designed for GE Mark VI turbine control systems
• Used in the Turbine Specific Primary Trip I/O path
• Supports simplex and TMR configurations
• Provides voltage detection inputs up to 140 VDC
• Provides dedicated E-stop input circuitry
• Supports turbine speed input signals
• Provides contact-output connections for trip-related control functions
• Two terminal blocks provide 48 screw-terminal positions in total
• Six 37-pin cable connectors provide interface connections to the associated control hardware
• Two vertical backplane connectors, P1 and P2, provide board-level system connections
• Suitable for maintenance and replacement of legacy GE turbine control equipment
Common Questions & Answers
Q: What is the IS200TRPAS1A used for?
A: It is a Primary Trip Board used for turbine-specific primary trip functions within GE Mark VI turbine control systems.
Q: What equipment is associated with this board?
A: GE documentation identifies IS200TRPAS1A as an accessory terminal board for the IS220YTURS1A turbine-specific primary trip module.
Q: What voltage can the voltage-detection input handle?
A: The documented TRPA input range is 16 to 140 VDC.
Q: What is the E-stop input range?
A: The documented E-stop input range is 18 to 140 VDC.
Q: How many terminal connections are available?
A: The board has two terminal blocks, each with 24 screw connections, for a total of 48 terminal positions.
Q: Is IS200TRPAS1AFD a different board from IS200TRPAS1A?
A: IS200TRPAS1AFD is a later identification/revision of the TRPA board family. The F/D version has documented revision information, so the complete part number should be matched before replacement.
Safety & Troubleshooting
• Isolate and lock out turbine-control power before removing or installing the board.
• Verify the complete part number and revision before replacement.
• Confirm terminal wiring and connector orientation against the existing installation.
• For trip or E-stop faults, check field wiring, input voltage, terminal connections, and associated I/O hardware.
• For speed-input faults, inspect the speed sensor wiring and signal range before replacing the board.
• Do not alter protection or trip-circuit wiring while the system is energized.
• Primary trip circuits are safety-critical; replacement and commissioning should follow the applicable GE system documentation and site procedures.
Recommended GE Models
- IS200TRPAH1A — Primary Trip Terminal Board
- IS200TRPAH1AFB — Aeroderivative Primary Trip Terminal Board
- IS200TRPGH1A — Primary Trip Termination Board
- IS200TRPGH1B — Primary Trip Termination Board
- IS200TRPGH1BDD — Trip Solenoid Control Board
- IS200TRPGH2B — Primary Trip Terminal Board
- IS200TRPGH3B — Gas Turbine Primary Trip Terminal Board
- IS200TRPLH1A — Turbine Primary Trip Board
- IS200TRPLH1AEC — Primary Trip Terminal Board
- IS200TRPSH1A — Primary Trip Termination Board
- IS200TRPSH1ACC — Primary Trip Terminal Board
- IS200TREAH1A — Backup Turbine Protection Terminal Board
- IS200TREAS1A — Backup Protection Terminal Board
- IS200TPROH1C — Turbine Protection Terminal Board
- IS200TREGH1A — Turbine Emergency Trip Terminal Board
