Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | General Electric |
| Product Family | Mark VIe / Mark VIeS |
| Model | IS200WREAS1ADB |
| Functional Designation | WREA |
| Product Type | Aero Turbine Emergency Trip Option Board |
| Associated I/O Pack | IS220PPRAS1B |
| Associated Terminal Board | IS200TREAS1A |
| System Input | 28 VDC |
| Maximum Input Current | 0.5 A for the PPRA/WREA/TREA system |
| Speed Input Range | -50 to +50 VDC |
| Voltage Input Range | 16 to 140 VDC |
| E-Stop Input Range | 18 to 140 VDC |
| Contact Input | 0 to 32 VDC |
| Contact Output | 28 VDC, up to 7 A for specified outputs |
| Other Contact Output | 28 VDC, up to 5 A |
| Contact Wetting Output | 32 VDC, 13.2 mA |
| Protection Architecture | TMR-compatible |
| Primary Application | Aero-derivative turbine emergency protection |
GE’s current certification documentation specifies the electrical limits for the IS220PPRAS1B with IS200TREAS1A and IS200WREAS1A combination, including 28 VDC supply, ±50 VDC speed input, 16–140 VDC voltage input, 18–140 VDC E-stop input, and the specified contact-output ratings.
The WREA board is an accessory component rather than a standalone Mark VIe controller. Its correct function depends on the associated PPRA I/O pack and TREA terminal-board architecture.
Product Introduction
GE IS200WREAS1ADB Product Introduction
The GE IS200WREAS1ADB is a WREA emergency-trip option board used in the Mark VIe turbine protection system. It works with the IS200TREAS1A TREA terminal board and IS220PPRAS1B PPRA I/O pack to support emergency turbine protection, including speed-signal handling and trip-path monitoring. GE certification documentation confirms this hardware combination.
This is safety-related turbine hardware. It should not be treated as a generic communication or Ethernet board. The actual system function depends on the complete PPRA/TREA/WREA assembly, wiring, configuration, and TMR architecture.
IS200WREAS1ADB
Application Scenarios & Field Pitfalls
Engineering Pain Point
When an aero-derivative turbine reports an emergency-trip diagnostic, replacing the I/O pack immediately is often the wrong first move. The WREA board, TREA terminal board, field wiring, speed pickups, trip contacts, and PPRA pack form one protection chain. A fault in any one of those areas can produce symptoms that look like a processor or I/O-pack failure.
Typical Applications
- Aero-Derivative Gas Turbines — Emergency overspeed and turbine shutdown protection.
- Power Generation — Independent emergency-trip protection for turbine-generator packages.
- Mechanical Drive Turbines — Speed and emergency-stop monitoring on turbine-driven compressors and pumps.
- Industrial Gas Turbine Packages — TMR emergency protection and trip-output supervision.
Technical Pitfalls to Avoid
- Do not confuse WREA with TREA.
The IS200TREAS1A is the terminal board, while IS200WREAS1A/WREAS1ADB is the associated WREA option-board hardware. GE lists both boards with the IS220PPRAS1B PPRA protection I/O pack. - Do not substitute an unrelated Mark VIe terminal board.
The PPRA architecture has a defined accessory-board combination. GE certification documentation specifically identifies the WREA and TREA boards for IS220PPRAS1B. - Check the speed-signal path before condemning the board.
The certified PPRA/WREA/TREA system accepts speed signals in the -50 to +50 VDC range. Pickup wiring, shielding, grounding, and signal amplitude should be checked before replacing protection electronics. - Verify the trip-output circuit rating.
The certification specifies different contact-output ratings, including 28 VDC at 7 A for designated outputs and 28 VDC at 5 A for others. Do not assume every output terminal has the same current capability. - Preserve the exact suffix.
IS200WREAS1ADB is more specific than simply “IS200WREAS1A.” For procurement, inspection, and maintenance records, retain the complete board number and all visible revision markings.
Related Products
- IS220PPRAS1B — PPRA Emergency Turbine Protection I/O Pack. This is the principal electronic I/O module associated with the WREA/TREA assembly. It performs the processing and protection functions while the terminal-board hardware provides the field interface.
- IS200TREAS1A — TREA Turbine Emergency Trip Terminal Board. This is the primary terminal-board companion to the WREA option board. It provides field termination for the emergency-trip architecture.
- IS210TREAS1A — TREA special-assembly board. This is a different GE board assembly that incorporates an IS200WREAS1ADB daughterboard. It should not be assumed to be electrically or mechanically identical to a standalone IS200TREAS1ADB/WREA board.
- IS200TREAH1A — TREA-family terminal-board hardware used in the PPRO backup turbine-protection architecture. It belongs to a different PPRA/PPRO configuration and should not be substituted without reviewing the system design.
- IS200TREAH3A — Another TREA-family board associated with the IS220PPROS1B protection architecture. Its function and system association differ from the WREA/TREA combination used with PPRA.
- IS200TPROH1C — TPRO turbine protection terminal board used with the IS220PROS1B architecture. It serves a different turbine-protection interface role.
- IS200TRPAH1A — Primary turbine protection terminal board associated with the IS220PTURH1B module. This belongs to the primary turbine-trip architecture rather than the PPRA emergency-trip path.
- IS220PPROS1B — Backup turbine protection I/O pack. It is related to the Mark VIe turbine-protection family but uses a different collection of terminal boards, including SPRO, TPRO, and TREAH variants.
- IS220PTURH1B — Turbine-specific primary-trip I/O pack. It is used with the TRPA terminal-board architecture and is therefore functionally distinct from the PPRA/WREA system.
