Description
Product Description
The GE IS200TPROH1B / IS200TPROH1BCB is a Protective Termination Board used in GE Mark VI turbine control systems. The board is identified by the functional acronym TPRO and provides the termination and field-interface circuitry associated with emergency turbine protection functions. It interfaces with applicable Mark VI I/O packs and field protection signals within the turbine control architecture.
The H1B version uses barrier-style terminals and provides a DC-37 interface for the associated I/O electronics. Available technical information identifies support for three PPRO I/O packs and two potential-transformer inputs. The exact field wiring and protection configuration should be matched to the original Mark VI system before installation.
The supplied item is identified as NEW in the provided listing. The complete hardware identification should be checked against the existing board before replacement, particularly the IS200TPROH1B and IS200TPROH1BCB markings.
Product Datasheet
| Specification | Details |
|---|---|
| Brand | General Electric (GE) |
| Model | IS200TPROH1B |
| Assembly / PCB Number | IS200TPROH1BCB |
| Series | Mark VI |
| Functional Acronym | TPRO |
| Product Name | Protective Termination Board |
| Product Type | Emergency Protection / Turbine Protection Terminal Board |
| Application | GE Mark VI Turbine Control System |
| I/O Pack Support | 3 PPRO I/O Packs |
| Potential Transformer Inputs | 2 |
| Main Interface | DC-37 Pin Connector |
| Terminal Style | Barrier |
| Mounting | Surface Mount |
| Wire Gauge | #18 AWG reported |
| Operating Temperature | -30°C to +65°C reported |
| Manual Reference | GEH-6721L |
| Variant | H1B |
| Condition | New |
| Origin | USA reported |
| Production Status | Legacy Mark VI Component |
Functional Features
⚙️ Protective Termination: Provides the field termination interface for applicable Mark VI turbine emergency-protection circuitry.
⚙️ PPRO Interface: Supports up to three PPRO I/O packs in the documented Mark VI configuration.
⚙️ Potential Transformer Inputs: Provides two PT inputs for applicable turbine protection and monitoring circuits.
⚙️ Barrier Terminals: The H1B version uses barrier-style terminal connections rather than the Euro-style arrangement associated with certain other variants.
⚙️ DC-37 Interface: Uses a DC-37 connector for connection to the associated Mark VI I/O electronics.
⚙️ System Integration: Designed to work as part of a complete Mark VI turbine control and protection architecture rather than as a standalone controller.
FAQ
Q: What is the IS200TPROH1B used for?
A: It is a Protective Termination Board for GE Mark VI turbine control and emergency protection applications.
Q: What does TPRO stand for?
A: TPRO is the functional acronym used for the Protective Termination Board.
Q: What is the difference between IS200TPROH1B and IS200TPROH1BCB?
A: IS200TPROH1B is the primary board/model identification, while IS200TPROH1BCB is the detailed assembly identification associated with this hardware.
Q: What type of terminals does the H1B use?
A: The H1B variant is documented with barrier-style terminals.
Q: How many PPRO I/O packs can it interface with?
A: Available technical information identifies three PPRO I/O pack interfaces for this board configuration.
Q: Can I replace another TPRO board with the IS200TPROH1B?
A: Replacement should be based on the complete part number, revision, terminal style, I/O-pack configuration, wiring, and Mark VI system design. Similar-looking TPRO variants should not be assumed interchangeable.
Troubleshooting & Safety
🛠️ Protection input problem: Check field wiring, terminal connections, PT circuits, and the associated PPRO I/O packs.
🛠️ I/O communication issue: Inspect the DC-37 connection and verify that the connected I/O hardware matches the Mark VI configuration.
🛠️ Incorrect protection status: Confirm terminal assignments and wiring against the original system drawings before changing connections.
🛠️ Replacement issue: Compare the original board’s full part number, revision, terminal arrangement, and connector layout with the replacement before commissioning.
⚠️ Turbine protection equipment: This board forms part of a turbine protection system. Installation and testing should be performed by qualified personnel following the site’s approved maintenance and commissioning procedures.
⚠️ Electrical isolation: Apply appropriate lockout/tagout procedures and verify that relevant control, instrument, and field circuits are de-energized before servicing.
⚠️ Configuration safety: Never change protection wiring or terminal assignments based only on board appearance. Use the approved system drawings and configuration documentation.
Recommended GE Models
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- IS200TREGH1A — Turbine Emergency Trip Board
- IS200TREGH1B — Trip Emergency Termination Board
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- IS200TRESH1A — Trip Emergency Termination Board
- IS200TRPGH1A — Primary Trip Termination Board
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- IS200TRLYH1B — Relay Termination Board
- IS200TRLYH1CCB — Relay Termination Board
- IS200TGENH1A — Generator Termination Board
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