Description
Overview
The IS200TREGH1B Turbine Emergency Terminal Board is a GE Mark VIe protection module designed to interface emergency trip solenoids and relay circuits within turbine shutdown systems. It provides the hardwired termination, relay logic, and power distribution required for fast, fail‑safe emergency trip execution in gas and steam turbine applications.
Functional Characteristics
This terminal board supports three independent emergency trip solenoids and incorporates a relay‑based voting architecture to ensure high‑integrity shutdown performance. A total of twelve relays are installed on the board, with nine arranged into three redundant voting groups. This structure enables triple‑modular protection logic, ensuring that turbine trips occur only under validated emergency conditions.
The IS200TREGH1B supplies the positive side of the trip‑solenoid power circuit, while companion TRPG modules provide the negative return path. This separation enhances electrical isolation and improves system reliability.
Additional design features include:
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Redundant 125 VDC power handling
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Diode‑combined power feeds from JX1/JY1/JZ1 connectors
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Isolated trip relay circuits
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Status feedback power supplies for economizer relays
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LED indicators for relay group status
Mechanical and Electrical Specifications
| Parameter |
Specification |
| Model |
IS200TREGH1B |
| Product Type |
Turbine Emergency Terminal Board |
| Brand |
GE |
| Series |
Mark VIe |
| Dimensions |
33 × 17.8 × 5.5 cm |
| Weight |
2 kg |
| Origin |
USA |
| HS Code |
8537101190 |
| Condition |
New |
| Availability |
In Stock |
| Power Input |
125 VDC (typical) |
| Relay Count |
12 total (3 voting groups) |
| Response Time |
|
| System Compatibility |
DCS / Mark VIe |
| Minimum Order |
1 unit |
Integration and System Role
The IS200TREGH1B connects directly to:
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TRPG trip‑relay modules
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PPRO modules
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Emergency trip solenoids
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VME‑based Mark VIe racks
Its rugged construction and industrial‑grade components allow it to withstand high vibration, temperature extremes, and electrical noise typical of turbine enclosures.
Application Scenarios
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Gas turbine emergency trip systems
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Steam turbine overspeed and shutdown protection
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Combined‑cycle plant safety architectures
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Hardwired emergency stop circuits
-
Redundant trip logic implementations
FAQ
Q: What voltage does the board support for trip circuits? A: It is optimized for 125 VDC trip‑solenoid applications.
Q: How many relays are included? A: Twelve relays, with nine arranged in three redundant voting groups.
Q: Does the board provide diagnostic indicators? A: Yes. LED indicators display relay group status and assist with troubleshooting.
