The GE IS200ESYSH3A, also cataloged as the IS200ESYSH3A terminal board, serves as the primary ESYS I/O interface used to execute PT/CT signal handling, auxiliary contact processing, and trip‑relay routing across EX2100e excitation control platforms.
Hardware Specifications
Parameter
Specification
Model
IS200ESYSH3A
Brand
GE
Origin
USA
Weight
Not specified
Dimensions
Not specified
Operating Temp
Not specified
Power Consumption
Not specified
Series
EX2100e
Product Type
I/O Terminal Board
Control Sections
M1
Group Variation
H3 (simplex)
CT Inputs
1 A or 5 A
PT Inputs
Three‑phase generator PT inputs
Auxiliary Inputs
7 contact inputs
Relay Outputs
2 trip relays
Connectors
Six sub‑D pin connectors
Isolation
Transformer‑based isolation
Backplane Bus Communication Velocity Behavior
As part of the EX2100e excitation platform, the ESYS board maintains deterministic backplane communication timing through its high‑speed serial link (HSSL) daughterboard interface. The board’s connector layout and isolation‑transformer topology stabilize propagation delay for PT/CT feedback, ensuring consistent timing for protection‑logic execution. Signal routing is designed to minimize skew across simplex control paths, preserving synchronous operation with the M1 controller.
Frequently Asked Questions
Q: Can the IS200ESYSH3A be replaced while the exciter is energized? A: No. Replacement must occur with the cabinet de‑energized to avoid unintended relay transitions or PT/CT signal interruption.
Q: Does the ESYS board support redundant control? A: The H3 variant operates strictly in simplex mode. Other ESYS groups (H1, H2) support different redundancy configurations.
Q: How does the board handle CT and PT feedback? A: It accepts two CT inputs (1 A or 5 A) and two three‑phase PT inputs, providing isolated current and voltage feedback to the excitation controller.
Field Installation Guidelines
Maintain proper shield termination at PT/CT wiring points to reduce induced noise.
Ensure isolation‑transformer wiring is correctly landed to preserve measurement accuracy.
Verify correct seating of all six sub‑D connectors before energizing the system.
Route CT conductors separately from high‑energy SCR or IGBT cabling to avoid magnetic coupling.
Confirm trip‑relay wiring paths are free of parallel high‑current conductors to prevent nuisance pickup.
Inspect terminal strips for torque and conductor gauge compliance before commissioning.
