SPECIFICATIONS
Part No.: DS200PTCTG1ABB
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Technology: Surface-mount
Temperature Operating: -30 to 65oC
Product Type: I/O Board
Availability: In Stock
Series: EX2000
Functional Description
DS200PTCTG1ABB is an I/O Board developed by GE. It is a part of EX2000 excitation system. The Potential Transformer Current Transformer (PTCT) I/O Board design ensures the isolation, scaling, and processing of voltage and current signals, primarily from potential transformers (PTs) and current transformers (CTs).
Key Features and Functions
- Primary Purpose: Isolates and scales voltage and current signals from PTs and CTs. Facilitates auxiliary input and output for low-voltage signals (±10 V DC) or 4-20 mA current signals.
- Voltage Signals: Equipped with six high-precision transformers for accurate voltage signal isolation. Transformer specifications:
- Secondary rating: 1.6 Vrms.
- Primary nominal rating: 120 Vrms.
- Current Signals: Includes three CTs, each paired with a burden resistor across its secondary. Test points (TP13 to TP18) allow voltage measurement across burden resistors (R10 to R12). Terminal points are available for primary current signal connections.
- Low Voltage/Current Inputs: Accepts low voltage inputs (10 V). Converts these to 4-20 mA signals using configurable jumpers (marked as BJ). The flexibility of jumper selection allows customization for specific input requirements.
- Current Outputs: Outputs 4-20 mA signals to the board via connector JKK.
Procedure for Replacing Board
- Turn Off Power: Ensure the exciter's power is completely turned off before proceeding.
- Disconnect Cables: Carefully remove all connected cables:
- Ribbon Cables: Hold the connector with both hands and gently pull it out.
- Cables with Pull Tabs: Use the pull tab to disconnect the cables gently.
- Remove Mounting Screws: Unscrew the fasteners at the top and bottom of the board to release it from the rack.
- Configure the Replacement Board: Match all configurable settings (e.g., jumper positions) on the new board with those of the old board.
- Install the New Board: Insert the new board into the rack and secure it with the mounting screws.
- Reconnect Cables: Reconnect the labeled cables to their respective connectors, ensuring they are properly seated and aligned.
Detailed Signal Handling
- Voltage Signals: High-precision transformers ensure signal integrity during isolation and scaling. Test points TP1 to TP12 facilitate real-time measurement and troubleshooting.
- Current Signals: Burden resistors across CT secondaries stabilize current signal processing. Dedicated test points (TP13 to TP18) ensure ease of voltage measurement and diagnostics.
- Low Voltage/Current Inputs: Configurable via hardware jumpers, offering versatility between voltage and current input requirements.
- Current Outputs: The 4-20 mA signal output ensures compatibility with downstream devices like the TCCB board.
The WOC team is always available to help you with your EX2000 requirements. For more information, please contact WOC.
Frequently Asked Questions
What is DS200PTCTG1ABB?
It is an I/O Board developed by GE under the EX2000 series.
What are the main functions of the board?
Isolating and scaling signals from PTs and CTs. Processing low voltage (±10 V DC) and 4-20 mA current signals. Providing test points for voltage and current signal measurements. Outputting 4-20 mA current signals to the board.
Can I configure the board for different input signals?
Yes. The board can process low voltage signals (10 V) or 4-20 mA signals. Configuration is achieved through movable hardware jumpers, labeled with the BJ.
Where does the board output its current signals?
The board outputs 4-20 mA signals via connector JKK to the board.
