Product Core Brief
- Model: IS200TTURH1CEC
- Brand: GE (GE Vernova)
- Series: GE Speedtronic Mark VI / Mark VIe — TTUR Turbine Terminal Board
- Core Function: Turbine terminal board used in Mark VI/Mark VIe systems for generator synchronization, breaker control, and turbine-related I/O termination, typically paired with VTUR/PTUR boards.
- Product Type: Turbine Terminal Board
- Key Specs: Screw terminal blocks + D-shell connectors | Surface-mount relays | Simplex/TMR jumper-selectable
- Condition: New Original (New Surplus) / Factory Sealed
Product Introduction
The is a TTUR-series turbine terminal board used in GE Speedtronic Mark VI and Mark VIe turbine control systems. TTUR boards serve as the physical I/O interface between the turbine/generator field wiring and the Mark VI/VIe controller, handling generator synchronization signals, breaker control relays, and other turbine-related discrete I/O.
Why keep one on the shelf: when a TTUR board fails, you can lose breaker close/trip paths, synchronization signals, or critical turbine I/O — any of which can force a unit outage. TTUR boards are typically used alongside VTUR or PTUR boards, so confirming the exact board role and suffix before swapping is essential. These are discontinued GE boards and increasingly hard to source in clean, unused condition.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model | |
| Functional Abbreviation | TTUR |
| Product Type | Turbine Terminal Board |
| Compatible Platform | GE Speedtronic Mark VI / Mark VIe |
| Typical Companions | VTUR, PTUR boards |
| Connectors | Screw terminal blocks, D-shell connectors, plug connectors |
| Onboard Components | Surface-mount relays, transformers, variable resistors |
| Configuration | Simplex or TMR selectable via jumpers |
Note: Exact current ratings, relay count, terminal numbering, and TMR/Simplex behavior depend on the specific cabinet build and companion boards. Always verify against your existing board label and the GE Mark VI/VIe hardware manual.
Key Selling Points & Differentiators
- Correct TTUR board for Mark VI/VIe. Designed specifically for GE Speedtronic turbine synchronization and breaker control I/O — not a generic terminal strip.
- Simplex/TMR selectable. Jumpers allow the board to operate in single-channel or triple-modular-redundant configurations, matching the cabinet architecture.
- Direct like-for-like replacement. Matches the IS200TTURH1C family used in legacy Mark VI/VIe cabinets.
- New surplus availability. Discontinued GE board. We stock verified, unused units — not pulled boards with unknown relay cycling history.
- Not recommended for Mark V DS200-series cabinets, non-GE turbine controls, or unrelated I/O racks.
- 12-month warranty with pre-shipment visual inspection and connector verification.
Quality Transparency SOP
- Label & suffix audit. Verify “IS200TTURH1CEC” and “TTUR” on the board label. Confirm the “CEC” suffix matches the existing board.
- Visual PCB inspection. Check for burnt relay housings, cracked solder joints, swollen capacitors, or corrosion around terminal blocks.
- Connector & terminal check. Verify screw terminals are tight and undamaged. Confirm D-shell pins are straight and not bent.
- Relay & jumper check. Visually confirm relay presence and jumper settings match the cabinet’s Simplex or TMR configuration.
- ESD packaging. Sealed in anti-static bag, foam-padded box, shipped with a signed inspection report.
Technical Risk Avoidance
- ❗ Confirm the full suffix before ordering. IS200TTURH1B, IS200TTURH1C, and suffix variants such as CEC, CFD, CCC may differ in relay population, connector layout, or configuration. Replace like-for-like unless engineering approves otherwise.
- ❗ Do not confuse TTUR with VTUR/PTUR. TTUR is the terminal board. VTUR is typically the turbine trip/protection board, and PTUR is another turbine-related board. They work together but are not interchangeable.
- ❗ Verify Simplex vs TMR jumper settings. Installing a board with the wrong jumper configuration can prevent proper breaker control or synchronization voting.
- ❗ Document wiring before removal. TTUR boards carry critical generator and turbine signals. Mislabeling terminals during replacement can cause incorrect breaker operation.
- ❗ Check companion board health first. If VTUR or PTUR has failed, replacing the TTUR board alone may not restore function. Diagnose the full I/O chain before swapping.
Buyer’s FAQ
Q: What system is IS200TTURH1CEC used in? A: It is used in GE Speedtronic Mark VI and Mark VIe turbine control systems as a turbine terminal board for generator synchronization and breaker-related I/O.
Q: Is this the same as IS200TTURH1B or IS200TTURH1CFD? A: They belong to the same TTUR family, but suffixes can indicate different revisions or configurations. Always match the full part number on your existing board.
Q: Can this board be used in both Simplex and TMR systems? A: TTUR boards typically support both via jumper settings, but the exact configuration must match your cabinet. Confirm jumper positions before installation.
Q: Is this new or refurbished? A: New original surplus — factory sealed, never installed. We do not sell pulled or refurbished boards as “new.”
Q: What’s the lead time and warranty? A: In-stock units ship within 1–2 business days. 12-month warranty from ship date, covering manufacturing defects and DOA failures.
