SPECIFICATIONS
Part No.: IS200ECTBG2A
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Technology: Surface-mount
Temperature Operating: -30 to 65oC
Product Type: Exciter Contact Terminal Board
Availability: In Stock
Series: EX2100
Functional Description
IS200ECTBG2A is an Exciter Contact Terminal Board developed by GE. It is a part of the EX2100 excitation system. The terminal board supports excitation contact outputs and inputs in the EX2100 Excitation Control. There are two versions; the ECTBG1 board is only used in the redundant control, and the ECTBG2 board is only used in the simplex control. Each board contains two trip outputs driving a customer lockout, controlled by the EMIO board. There are also four general-purpose Form-C contact outputs controlled by the EMIO board. Six auxiliary contact inputs are powered (wetted) with 70 V dc and monitored by ECTB. Also, the 52G and 86 G contact inputs are powered with 70 V DC and monitored. In the redundant control, power comes from both the M1 and M2 controllers.
Relay Control and Feedback
- ECTBG2, driven by the EMIO in M1, controls two trip relays normally used as customer lockout drivers.
- The relay drivers are powered by 24 V dc from the M1 controller.
- Each customer lockout is driven by one relay using two parallel normally closed contacts. On the board, the relays are designated K1M1 and K2M1. For redundant control operation with ECTBG1, the three inputs drive three relays that control a 2- out of 3 contact voting circuit.
Contact Inputs
- Contact input uses are similar in the simplex and redundant cases, however, the inputs are fanned to the M1, M2, and C controllers for redundant control. In simplex control, only the M1 controller is connected. Six customer-supplied auxiliary contact inputs are powered and monitored by ECTB using 70 V dc from plugs J13M1 and J13M2 are resistor-isolated and supplied to the contacts. The wetting voltage can vary from 63 to 84 V dc.
- The state of the contact is monitored. The resulting signal drives a red indicating LED, and fans out to M1, M2, and C. One contact from 52G is monitored using the 70 V dc excitation in the same way as the auxiliary inputs. The status is indicated with a red LED. One contact from 86G is wetted with a nominal 70 V dc as above. The state of the contact is monitored by controllers M1, M2, and C.
Features
- Excitation Contact Outputs: Each board features two trip outputs responsible for driving a customer lockout mechanism. These outputs are controlled by the EMIO board, ensuring precise operation and protection against excitation-related faults.
- General-Purpose Contact Outputs: Additionally, four general-purpose Form-C contact outputs are available on the board. These outputs, also managed by the board, offer versatility for various control and monitoring applications within the excitation system.
- Auxiliary Contact Inputs: The terminal board accommodates six auxiliary contact inputs, which are powered (wetted) with 70 V dc. These inputs are monitored by the ECTB, providing feedback on external conditions or events that may impact excitation control operations.
- Monitoring Functions: In both redundant and simplex control configurations, the IS200ECTB board is responsible for monitoring critical contact inputs such as 52G and 86G. These inputs are powered with 70 V dc and serve as key indicators for excitation system status and performance.
- Redundant Power Supply: In redundant control setups, power for the board is sourced from both the M1 and M2 power supplies. This redundant power arrangement ensures continuous operation and fault tolerance, enhancing the reliability of the excitation control system.
- Integration with EMIO Board: The terminal board works in conjunction with the EMIO board to manage excitation contact outputs, general-purpose contact outputs, and auxiliary contact inputs. This integration enables seamless communication and control within the excitation system.
Procedure for Replacing Redundant Exciters (Online)
- Diagnose the Failed Trip Relay: Utilize the diagnostics available on the toolbox to identify the specific trip relay that has failed. The diagnostics tool will provide detailed information to pinpoint the faulty component accurately.
- Locate the Failed Relay: Open the control cabinet door and locate the failed relay on the ECTBG1 terminal board. Exercise caution when handling equipment within the cabinet to avoid accidental damage or injury.
- Carefully Remove the Holding Clip: Very carefully, snap off the clip that is holding down the failed relay. Handle the clip with care to prevent dropping it or causing any damage to surrounding equipment.
- Extract the Failed Relay: Gently pull the failed relay out of the terminal board. Ensure that you maintain control over the relay to prevent it from falling or causing any disruptions to nearby components.
- Install the Replacement Relay: Insert the replacement relay into the designated slot on the terminal board. Ensure that the relay is securely seated in place to guarantee proper functionality.
- Secure the Holding Clip: Very carefully snap the holding clip back into place on the replacement relay. Double-check that the clip is securely fastened to prevent any potential issues during operation.
- Close the Control Cabinet Door: Once the replacement relay is installed and secured, close the control cabinet door securely. Ensure that the cabinet is properly sealed to maintain the integrity of the system.
The WOC team is always available to help you with your EX2100 requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IS200ECTBG2A?
It is an exciter contact terminal board developed by GE under the EX2100 series.
What should I do if I encounter difficulties during the replacement process?
If you encounter any difficulties or uncertainties during the replacement process, consult the exciter diagnostics in the toolbox for guidance. Additionally, seek assistance from qualified personnel if needed to ensure the safe and effective completion of the task.
Are there any risks associated with replacing trip relays online?
Yes, there are potential risks associated with replacing trip relays online, such as equipment damage, personal injury, or exciter trip. It's crucial to exercise caution and follow the recommended procedures diligently to mitigate these risks effectively.
What measures should be taken to prevent equipment damage or personal injury?
Take great care when handling the trip relay and associated hardware to avoid accidents or damage. Ensure that all components are securely fastened and properly seated to maintain system integrity and safety.
