General Electric IS200ERGTH1AAA Terminal Board

Description

The GE IS200ERGTH1AAA Exciter Regulator Third-party Ground Detector Terminal Board operates as a dedicated hardware interface for routing ground fault monitoring signals between the IS200EROC Exciter Regulator Options Card and third-party ground detection instruments within EX2100 Excitation Control System platforms.

Hardware Specifications

Backplane Bus and Firmware Compatibility

The module integrates directly into the EX2100 regulator control framework (supporting both simplex and redundant configurations), serving as the physical signal converter between the EROC and peripheral detection units. The ERGT hardware processes localized ground fault currents through its onboard 32-bit digital signal processor, which converts the 9-pin EROC connector signals into field-ready terminal screw points. All digital filter algorithms, current loop scalings (0-20 mA), and sampling diagnostics are strictly bound to the specific firmware flash revision programmed into the primary regulator controller, ensuring deterministic interface timings without introducing loop latency.

Frequently Asked Questions

Q: What is the primary physical function of the ERGT terminal board? A: The ERGT board acts as a signal adaptation layer. It converts the multi-conductor 9-pin connector pins originating from the IS200EROC options card into discrete, industrial terminal screw connections suitable for third-party ground detector wiring.

Q: Can this module be deployed in high-reliability redundant systems? A: Yes. The board is designed to interface with EX2100 regulator control systems configured in either standalone simplex architectures or high-availability redundant control topologies.

Q: What are the primary electrical load constraints for the analog output loop? A: The onboard analog current loop operates across a 0-20 mA scale under an internal excitation potential of 24 VDC. The field connection must not exceed a maximum interconnect lead resistance of 15 ohms to preserve signal accuracy.

Field Installation Guidelines

• Connector Integrity and Pin Alignment: Secure the 9-pin signal harness from the EROC card to the ERGT receptacle using the integrated retention screws. Pin misalignment or loose mating can disrupt diagnostic readings from the ground fault processor.
• Electrostatic Discharge (ESD) Protection: The onboard 32-bit digital signal processor and related solid-state surface-mount arrays are sensitive to static electricity. Installation engineers must use a verified, grounded ESD wrist strap before handling the unit.
• Lead Resistance Monitoring: Verify that the total loop resistance of the copper conductors running from the terminal screws to the third-party ground detector stays below the 15 ohms physical limit to avoid saturation of the 0-20 mA output channel.
• Environmental and Thermal Siting: Ensure cabinet airflow is balanced to keep the ambient temperatures surrounding the board strictly within the 30 to 50 deg C operating range. Secure all corner mounting hardware to the cabinet chassis to provide an adequate mechanical ground reference.