Description
🔹 Product Description
The GE General Electric IS200ESELH2A, also identified as IS200ESELH2AAA, is an Exciter Selector Board used in GE EX2100 excitation control systems associated with Mark VI turbine control applications. The ESEL board is installed in the control rack and receives six logic-level gate pulse signals from the corresponding EMIO board. It then distributes the selected gate-pulse commands through multiple cable outputs to the EGPA gate-pulse amplifier boards located in the power conversion cabinet. The H2 configuration is identified with three bridge drivers for control of three power conversion modules, making the board suitable for excitation-system architectures requiring multiple controlled bridges.
🔹 Product Datasheet
| Parameter | Value |
|---|---|
| Brand | GE General Electric |
| Model | IS200ESELH2A / IS200ESELH2AAA |
| Series | EX2100 / Mark VI |
| Product Name | Exciter Selector Board |
| Functional Acronym | ESEL |
| Place of Manufacture | USA |
| Product Status | New |
| Dimensions | Approx. 16 × 16 × 12 cm |
| Weight | Approx. 0.8–1.0 kg |
| Power | 28 VDC system power |
| Discontinued | Legacy product |
🔹 Common Questions & Answers
Q: What is the IS200ESELH2A used for?
A: It is an Exciter Selector Board used to receive gate-pulse commands from the EMIO board and distribute the appropriate excitation control signals to EGPA boards.
Q: What does the ESEL abbreviation mean?
A: ESEL refers to the Exciter Selector function within the EX2100 excitation control architecture.
Q: How many gate-pulse signals does the board receive?
A: The ESEL board receives six logic-level gate-pulse signals from its corresponding EMIO board.
Q: What does the H2 configuration indicate?
A: Technical references identify the H2 configuration as having three bridge drivers associated with three power conversion modules.
Q: Where are the EGPA boards installed?
A: The EGPA gate-pulse amplifier boards are installed in the power conversion cabinet and receive the distributed signals from the ESEL assembly.
Q: Is IS200ESELH2AAA the same board as IS200ESELH2A?
A: IS200ESELH2AAA is the extended ordering identification associated with the IS200ESELH2A board. The complete board marking and revision should be verified before replacement.
Q: What revisions are identified on IS200ESELH2AAA?
A: Available technical information identifies functional revision A, functional revision 2 A, and artwork revision A for the IS200ESELH2AAA configuration.
Q: What should be checked before installation?
A: Verify the complete part number, board revisions, EMIO compatibility, EGPA configuration, power supply, connectors, cabinet wiring, and the existing EX2100 system configuration.
Q: What should be checked if excitation gate-pulse signals are abnormal?
A: Check the board power supply, EMIO source signals, ESEL connectors, output cabling, EGPA boards, bridge configuration, and system diagnostics before replacing the board.
🔹 Recommended GE Models
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- IS200EGPAG1B — Exciter Gate Pulse Amplifier Board
- IS200EPSMG1A — EX2100 Exciter Power Supply Board
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- IS200ERDDH1A — Exciter Dynamic Discharge Board
- IS200ERGTH1A — Exciter Ground Detector Board
- IS200GDDDSG1A — Gate Driver and Dynamic Discharge Board
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