SPECIFICATIONS
Part No.: IS200VGENH1B
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Number of channels: 8
Span: 0.3532 to 4.054 V
Temperature: -30 to +65 oC
Technology:Surface mount
Product Type: Generator Monitor and Trip Board
Availability: In Stock
Series: Mark VI
Functional Description
IS200VGENH1B is a generator monitor and trip board developed by GE. It is a part of the Mark VI control system. Primarily tasked with monitoring the three-phase voltage and currents of the generator, as well as calculating key parameters such as three-phase power and power factor, the VGEN and TGEN components serve as critical assets in maintaining system performance and integrity.
Monitoring and Calculation
- The VGEN and TGEN boards work in tandem to monitor the generator's three-phase voltage and currents meticulously.
- Through precise measurements and analysis, they calculate essential metrics such as three-phase power and power factor. These calculations provide valuable insights into the electrical characteristics of the generator, allowing operators to assess its operational efficiency and performance accurately.
Power Load Unbalance (PLU) and Early Valve Actuation (EVA) Functions
- In addition to monitoring and calculation tasks, the VGEN board plays a pivotal role in enhancing the operational capabilities of large steam turbine applications. Specifically, it provides critical functions such as Power Load Unbalance (PLU) and Early Valve Actuation (EVA).
- These functions are executed using fast-acting solenoids located on the TRLY terminal board, which is interfaced with the VGEN board.
Power Load Unbalance (PLU)
- The PLU function is designed to detect and mitigate any imbalances in the power load across the generator.
- By actively monitoring the distribution of power among the three phases, the VGEN board can identify instances of load imbalance and take corrective action to restore equilibrium. This ensures optimal utilization of resources and prevents undue stress on system components.
Early Valve Actuation (EVA)
- The EVA function facilitates the early actuation of turbine valves based on predefined conditions or parameters. By leveraging fast-acting solenoids located on the TRLY terminal board, the VGEN board can initiate valve actuation sequences swiftly and efficiently.
- This enables the steam turbine to respond proactively to changing operating conditions, optimizing performance and enhancing overall system reliability.
Installation
- Power Down the VME I/O Processor Rack: Begin by ensuring that the VME I/O processor rack is powered down to prevent any electrical hazards during the installation process.
- Slide in the Board: Carefully insert the board into the designated slot within the VME I/O processor rack. Align the edge connectors of the board with the corresponding slots in the rack.
- Secure the Board: Using your hands, push the top and bottom levers inward to seat its edge connectors firmly into place. Ensure that the board is securely positioned within the rack.
- Tighten Captive Screws: Locate the captive screws at the top and bottom of the front panel of the board. Use appropriate tools to tighten these screws, ensuring that they are snug but not overly tightened. These screws serve to hold the board firmly in place and enhance the front ground integrity of the board. However, they should not be used to seat the board initially.
- Cable Connection to Terminal Board: Connect the necessary cables to the TGEN terminal board, which interfaces with the board. The cable connection is made at the J3 connector located on the lower portion of the VME rack. This connector is of the latching type, providing a secure connection for the cable.
- Cable Connection to Optional TRLY Terminal Board: If applicable, connect additional cables to the optional terminal board, which may be used in conjunction with the VGEN board for specific functions. The cable connection is made at the J4 connector on the lower portion of the VME rack. Similar to the previous connector, this is also a latching type connector designed to securely hold the cable in place.
The WOC team is always available to help you with your Mark VI requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IS200VGENH1B?
It is a generator monitor and trip board developed by GE under the Mark VI series.
What do the LEDs on the VGEN front panel indicate?
The front panel has three LEDs. The flashing green LED indicates normal RUN status, while a solid red LED indicates a FAIL condition. The STATUS LED remains off under normal operation but turns steady orange if a diagnostic alarm occurs.
What diagnostics does the VGEN board perform?
The board conducts hardware and software limit checks on input signals, with adjustable software limits. It also detects open wires in voltage inputs and monitors relay drivers and coil currents for abnormalities.
What information does the ID device contain in connectors JR1, JS1, and JT1 on the terminal board?
The ID device in connectors JR1, JS1, and JT1 holds the terminal board's serial number, type, revision number, and plug location. It serves as a read-only chip, ensuring accurate identification and configuration of the terminal board within the system.
