GE IS200ESELH2A Exciter Selector Board (ESEL Group 2)

FAQ

Q1. What is the IS200ESELH2A used for?
It is an Exciter Selector Board that routes logic‑level gate pulse signals from the master I/O board (EMIO) to multiple EGPA boards for SCR gate firing.

Q2. Which systems is this board compatible with?
It is designed for use in GE EX2100 Excitation Control Systems.

Q3. How many bridge drivers does it have?
The IS200ESELH2A features three bridge drivers.

Q4. How does it differ from IS200ESELH1A?
This model (Group 2) has more bridge drivers (three) compared to the single driver in the H1A variant, supporting enhanced firing capacity.

Q5. What are the approximate physical dimensions?
The board is approximately 26.3 × 5.8 × 2.8 cm.

Q6. What is the approximate weight?
It weighs about 4.3 kg.

Q7. What environmental conditions can it operate in?
It typically operates from 0 °C to +60 °C and can be stored between –40 °C and +85 °C.

Q8. How many gate pulse outputs does it provide?
It supports up to six logic‑level gate pulse outputs for EGPA boards.

Q9. Can it be used in redundant configurations?
Yes; in redundant control systems, two ESEL boards (one driven by each controller) are often used, with the active one selected by controller C.

Q10. Is the IS200ESELH2A still available?
The module is considered legacy but still available through industrial automation suppliers and surplus parts inventories.

GE IS200ESELH2A

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