IS200EHPAG1C - Exciter Gate Pulse Amplifier Board

SPECIFICATIONS

Part No.: IS200EHPAG1C
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Temperature Operating: -30 to 65oC
Product Type: Exciter Gate Pulse Amplifier Board
Availability: In Stock
Series: EX2100

Functional Description

IS200EHPAG1C is an Exciter Gate Pulse Amplifier Board developed by GE. It is a part of the EX2100 excitation system. Its primary function is to take gate commands from the Exciter Selector (ESEL) and control the gate firing of up to six Silicon Controlled Rectifiers (SCRs) on the Power Bridge. Additionally, the board interfaces for current conduction feedback, and monitors both bridge airflow and temperature.

Features

• Gate Command Processing: Receives gate commands from the ESEL and uses these to control the firing of up to six SCRs on the Power Bridge. This ensures precise control over the excitation process.
• Current Conduction Feedback: The board interfaces with the system to provide feedback on the current conduction, ensuring accurate monitoring and control.
• Bridge Airflow and Temperature Monitoring: Monitors the airflow and temperature of the bridge, helping to maintain optimal operating conditions and prevent overheating or other issues.
• Power Supply: A nominal 125 V DC power source from the Excitation Power Distribution Module supplies an on-board DC/DC converter. This converter provides the necessary power for SCR gating across the full range of input supply voltages.

Power Bridge Interaction

• Controlling the gate firing of SCRs based on commands from the ESEL.
• Providing necessary power for SCR gating through its on-board DC/DC converter.
• Offering real-time feedback and monitoring to ensure the system operates within safe parameters.

LED Indicators

• Power Supply Status: Indicates whether the EHPA is receiving adequate power.
• Input Gate Commands: Shows the status of gate commands received from the ESEL.
• Outputs: Displays the status of outputs sent to the SCRs.
• Current Monitoring: Provides feedback on current conduction through the bridge.
• Line Filter: Indicates the status of the line filter.
• Cooling Fan: Shows the operational status of the cooling fan, confirming it is functioning correctly.
• Temperature Monitoring: Indicates the bridge temperature to ensure it remains within safe limits.
• Alarms/Fault Conditions: Alerts to any alarms or faults, aiding in quick diagnosis and troubleshooting. 

The WOC team is always available to help you with your EX2100 requirements. For more information, please contact WOC.

Frequently Asked Questions

What is IS200EHPAG1C?
It is an Exciter Gate Pulse Amplifier Board developed by GE under the EX2100 series.

How does the board monitor conduction currents?
It uses Hall Effect sensors on the EXCS boards and interfaces with them via connectors J9 and J10 to provide current flow status to the controller.

How is bridge temperature monitored by the EHPA board?
For new exciters, it uses an RTD sensor input. For retrofits, it uses temperature switch inputs. These are connected at J13.

How does the EHPA board detect airflow issues?
It monitors fan rotation using airflow sensors connected at J12 and can detect either pulsed or dry-contact signals.

How is line filter fuse failure sensed by the board?
It uses a normally closed, dry contact input at connector J14 to detect fuse failure.