SPECIFICATIONS
Part No.: IS200STURH1A
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Size: 15.9 cm high x 17.8 cm, wide
Technology: Surface mount.
Temperature: -30oC to +65oC
Humidity: 5- 90 percent non-condensing
Cooling: Free air convection
Product Type: Simplex Terminal Board
Availability: In Stock
Series: Mark VIe
Functional Description
IS200STURH1A is a Simplex Terminal Board developed by GE. It is a part of Mark VIe control system. The terminal board stands out as a specialized variant of the turbine terminal board (TTUR), meticulously crafted for applications that require overspeed protection and primary trip functionality. The board features a DC-62 pin connector designed for mounting a single PTUR (Potential Transformer Unit Remote) I/O pack. This allows for the integration of potential transformer data into the system, essential for monitoring voltage levels. It can accept up to four-speed input signals, enabling the monitoring of rotational speed in various components of the system. These inputs are crucial for synchronization and control purposes. The board includes a 48-terminal Euro-style box connector, providing convenient connection points for customers to interface with the system. This allows for flexible customization and integration of external devices or systems.
Features
- PTUR Connectivity: Includes a DC-62 pin connector that allows mounting of a single PTUR I/O pack. This connection supports the transmission of potential transformer data into the Mark VIe system.
It ensures real-time voltage monitoring, which is crucial for generator protection, synchronization, and system diagnostics.
- Multi-Channel Speed Inputs: The board accepts up to 4 speed input signals, allowing operators to monitor critical rotational speeds.
These channels support turbine rotor speed, auxiliary shafts, or redundant speed sensing devices. This enhances overspeed protection reliability and enables precise control during startup, load changes, or shutdown sequences.
- Customer I/O Connectivity: A 48-terminal Euro-style box connector provides easy access for customer wiring.
This connector simplifies installation, supports flexible I/O arrangements, and allows integration of additional sensors or control devices, depending on system requirements.
- Redundant Trip Solenoid Outputs: The terminal board provides two trip solenoid outputs (K1 and K2), each protected by independent safety relays H1 and H2.
These outputs activate turbine trip mechanisms in the event of abnormal conditions. Their redundant configuration ensures safe and reliable emergency shutdown operations.
- Primary Trip Relay Interface: A dedicated DC-37 pin connector is included for connecting primary trip relays such as TPRG, TPRL, TPRS, or TPRA.
These relays play a critical role in initiating fast and accurate trip responses during overspeed, overvoltage, synchronization issues, or other fault conditions. The DC-37 interface ensures reliable communication and seamless integration.
- Primary Synchronization Support: Supports generator synchronization through both PT inputs and relay outputs.
- PT Inputs (H2, H4)- The board accepts two potential transformer (PT) inputs used for monitoring generator and bus voltage.
These inputs enable phase comparison, voltage matching, and other synchronization checks during generator startup or breaker closure.
- Relay Outputs for Synchronization- It provides two relay outputs (H2, H4) that help manage synchronization operations.
Specifically, relays K25 and K25P must close together to supply 125 V DC required to operate the main breaker 52G. This ensures safe, controlled connection of the generator to the power grid.
Failure Detection Procedure
- External Test Signal: A crucial component for speed input testing, an external test signal is employed to verify the functionality and accuracy of speed input signals. This allows for thorough validation and calibration of the speed input system.
- Redundant Signals: The STUR terminal board incorporates redundant signals to detect failures in normal running speed signals. This redundancy ensures that even in the event of signal failure, the system can seamlessly switch to alternate signals, maintaining operational continuity and reliability.
- External Test Signals: Proper feedback for PT (Primary Trip) inputs necessitates the utilization of external test signals. These signals ensure accurate feedback and functionality of the PT inputs, essential for effective trip functionalities.
- Forcibly Guided Contacts: Depending on the version of STUR being tested, trip relays utilize forcibly guided contacts. This design ensures that the feedback contact accurately represents the position of the power contact. By employing such contacts, the system enhances reliability and precision in trip relay operations.
- Voltage-Based Status Feedback: The breaker closure relay contact logic incorporates voltage-based status feedback mechanisms. This feature enables the system to continuously monitor the status of breaker closure relays and promptly detect any unexpected behavior or anomalies. By providing real-time feedback, this mechanism enhances the overall safety and reliability of the system.
Trip Relays
The trip relays (K1, K2) incorporated within the STUR terminal board are meticulously designed to meet stringent performance requirements.
- Contact Rating: Normally Open Contacts: Capable of handling 4A at 24 V dc, 4A at 48 V dc, and 2A at 125 V dc for resistive loads. Normally Closed Contacts: Designed for 4A at 24 V dc, 4A at 48 V dc, and 0.3A at 125 V dc for resistive loads. Minimum Contact Load: Maintains reliable operation with a minimum load exceeding 50 mW.
- Maximum Switching Rate: Rated Load: Supports up to 3 operations per minute at the rated load, ensuring consistent and reliable performance. Minimum Load: Achieves a remarkable switching rate of up to 60 operations per minute at minimum load, showcasing exceptional versatility and responsiveness.
- Surge Protection: Printed Circuit Board Surge Rating: The associated printed circuit board is engineered to withstand a minimum surge rating of 20A for 10 milliseconds. This robust surge protection capability ensures durability and longevity in demanding operating environments.
The WOC team is always available to help you with your Mark VIe requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IS200STURH1A?
It is a Simplex Terminal Board developed by GE under the Mark VIe series.
How does the terminal board detect issues with solenoid relay drivers?
The board continuously monitors feedback from solenoid relay drivers. If there's a problem with the control signal, indicating irregularities or failures, the system generates a fault to prompt investigation and resolution.
What happens if there's a problem with the relay contact position?
The system checks feedback from the relay contact position. If there's an issue with the control signal, signaling a potential malfunction or failure, a fault is created to address the problem promptly.
What triggers a fault related to solenoid power?
Loss of solenoid power prompts the system to create a fault notification. This ensures that any disruption in solenoid power supply is promptly addressed to maintain system integrity.
