Description
Overview
The IS200VTURH1BAC primary protection board is part of GE’s Mark VIe turbine control platform and is engineered to provide high‑integrity overspeed protection for gas and steam turbines. The module processes speed signals, supervises trip relay logic, and interfaces with multiple terminal boards to ensure rapid and reliable emergency shutdown when overspeed conditions occur.
Technical Specifications
The board supports high‑frequency MPU inputs, redundant relay architectures, and multiple terminal board interfaces. Its compact VME‑based design allows installation in standard Mark VIe racks while maintaining robust electrical performance.
| Parameter |
Specification |
| Model |
IS200VTURH1BAC |
| Product Type |
Primary Turbine Protection Board |
| Product Series |
GE Mark VIe |
| MPU Input Range |
2 Hz to 20 kHz |
| Speed Accuracy |
±0.05% |
| Trip Relay Control |
3 relays (simplex), 9 relays (TMR) |
| Terminal Board Interfaces |
TRPG, TRPL, TREG, TRPS |
| Contact Voltage Sensing |
20 VDC (HI), 6 VDC (LO) |
| Additional Functions |
Generator synchronization, breaker permissives |
| Dimensions |
2.1 × 18.6 × 26.1 cm |
| Weight |
0.3 kg |
| HS Code |
8537101190 |
| Origin |
USA |
| Condition |
New |
Functional Characteristics
The board monitors turbine speed using multiple MPU channels and executes overspeed trip logic based on configured thresholds. In TMR systems, the module participates in nine‑relay voting to ensure fault‑tolerant trip decisions. In simplex systems, three relays are used for primary trip control.
The module also supports shaft voltage and current monitoring when used with brush pickup assemblies. Its integration with the turbine controller and excitation system enables coordinated voltage regulation and synchronization functions. Built‑in diagnostics, high‑voltage alarm detection, and circuit integrity checks enhance system reliability.
Application Scenarios
The IS200VTURH1BAC is commonly deployed in:
-
Gas turbine overspeed protection
-
Steam turbine trip systems
-
Combined‑cycle plant protection architectures
-
TMR and simplex Mark VIe installations
-
Systems requiring high‑speed MPU processing and relay voting logic
FAQ
Q: Does the IS200VTURH1BAC support both simplex and TMR systems? A: Yes, it operates in either mode, using 3 relays in simplex and 9 in TMR configurations.
Q: What MPU frequency range does the board support? A: It accepts pulse rates from 2 Hz to 20 kHz with ±0.05% accuracy.
Q: Which terminal boards are compatible? A: TRPG, TRPL, TREG, and TRPS terminal boards.
Q: Does the board support synchronization functions? A: Yes, it works with TTUR modules to manage generator synchronization and breaker permissives.
