Description
🔹 Product Description
The GE General Electric IS200ECTBG2A, with assembly designation IS200ECTBG2ADE, is an Exciter Contact Terminal Board from the GE EX2100 Excitation Control system. The ECTB provides contact input and output interfaces between the excitation control system and external field devices. The G2 configuration is specifically intended for simplex operation.
The board provides six auxiliary contact inputs, two trip contact outputs, and four general-purpose Form-C relay contact outputs. The auxiliary contacts are wetted with isolated 70 VDC supplied from the excitation power supply module, while the trip relay outputs are controlled through the EMIO board. The board also monitors the 52G and 86G contact inputs in the applicable EX2100 configuration.
🔹 Product Datasheet
| Parameter | Value |
|---|---|
| Brand | General Electric (GE) |
| Model | IS200ECTBG2A |
| Assembly Designation | IS200ECTBG2ADE |
| Series | EX2100 Excitation Control |
| Functional Acronym | ECTB |
| Product Name | Exciter Contact Terminal Board |
| Operating Mode | Simplex only |
| Auxiliary Contact Inputs | 6 |
| Trip Contact Outputs | 2 |
| General-Purpose Outputs | 4 Form-C relay contact outputs |
| Wetting Voltage | Isolated +70 VDC |
| Relay Control Voltage | 24 VDC |
| Customer Power | 125 VDC |
| Controlled By | EMIO board |
| Monitored Contacts | 52G and 86G |
| Manual Reference | GEI-100457 |
| Product Status | Legacy / verify lifecycle |
| Condition | Verify actual unit condition |
| Dimensions | Approx. 150 × 76 × 90 mm; verify actual unit |
| Weight | Approx. 0.34 kg |
| Origin | USA |
🔹 Common Questions & Answers
Q: What is the IS200ECTBG2A?
A: It is an EX2100 Exciter Contact Terminal Board used to interface excitation-system contact inputs and outputs.
Q: What does ECTB stand for?
A: ECTB stands for Exciter Contact Terminal Board.
Q: Is the IS200ECTBG2A used in simplex or redundant systems?
A: The G2 configuration is designed for simplex operation. The ECTBG1 configuration is associated with redundant operation.
Q: How many auxiliary contact inputs are provided?
A: The board provides six auxiliary contact inputs with 70 VDC contact wetting.
Q: How many trip outputs are available?
A: There are two trip contact outputs, normally used to drive customer lockout functions through the EX2100 control architecture.
Q: How many general-purpose relay outputs are provided?
A: The board provides four general-purpose Form-C relay contact outputs controlled by the EMIO board.
Q: What are the 52G and 86G inputs?
A: They are monitored contact inputs used by the EX2100 excitation system for generator status and lockout-related functions.
Q: What is the wetting voltage?
A: The ECTBG2A uses isolated +70 VDC for contact wetting, supplied from the excitation power supply module.
Q: Is IS200ECTBG2A the same as IS200ECTBG2ADE?
A: They identify the same ECTBG2 board family, with IS200ECTBG2ADE representing the more complete assembly designation. Match the complete board marking and revision when ordering.
Q: Can the IS200ECTBG2A replace an ECTBG1A?
A: They should not be treated as interchangeable without checking the control architecture. The G2 version is specified for simplex operation, while G1 is associated with redundant operation.
Q: What should be checked before installation?
A: Verify the complete part number, assembly suffix, simplex system configuration, EMIO interface, field wiring, relay configuration, contact-wetting supply, and original EX2100 documentation.
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