New Surplus, No Original Box — What That Means Here

This IS200BICLH1B is new surplus without its original factory packaging: an unused board that's been removed from its box, typically during inventory handling or inspection, but never installed or powered up. It carries the same 1-year warranty as our factory-sealed and cleaned-and-tested stock. For an EX2100 excitation spare that's going straight into a panel rather than sitting in long-term storage, the missing box generally has no practical effect — what matters is the board itself and its revision.

H1A and H1B Are Both "BICL" — Match the Full Suffix Anyway

GE has issued this Bridge Interface Board under at least two board-type revisions, H1A and H1B, both carrying the same BICL functional code and the same core job: interfacing between the EX2100's main regulator board and a Bridge Personality Interface board (BPIA, BPIB, or SCNV) that connects to the IGBT power bridge. We haven't found manufacturer documentation spelling out a specific functional difference between the H1A and H1B board-type revisions, so treat that letter as part of the exact match you need, not a detail to guess past — order against the complete part number on your existing board's label, suffix included.

What the Board Does

Functionally: it carries firing commands out to the bridge personality board and returns current and thermal diagnostic data, independently monitors ambient and bridge temperature, interfaces with the cabinet's PWM fan speed control, and drives a system fault display. It is an EX2100 excitation control board, not a Mark VI turbine-control card, even though both share GE's IS200 numbering scheme — a distinction worth double-checking if this showed up on a generic "Mark VI" parts list.

Diagnose the Fault Chain Before Ordering

• A bridge/IGBT alarm can originate at the BICL, at the BPIA/BPIB/SCNV personality board, or at the power module — identify which stage is actually faulting.
• An overtemperature trip is frequently the cooling fan or cabinet airflow, not the BICL's monitoring circuit.
• A board that misbehaves right after installation is often seated in the wrong slot, or didn't complete a clean EPLD configuration cycle from the CPU at power-up — not necessarily defective out of the box.

Installation Basics

The faceplate is nearly blank apart from two brackets and a label calling for installation in Slot 5 only — follow it exactly, since the backplane wiring at that position is specific to this board. Use standard anti-static handling.

The Part Number, in Full

IS200BICLH1B IS200BICLH1BBA: BA marks this unit's specific revision within the H1B board type. GE documents this board under manual GEI-100264. Our part number decoder covers the rest of the IS200 naming structure shared across Mark VI and EX2100 hardware.

What Else to Order

The matching BPIA, BPIB, or SCNV bridge personality board, plus EACF exciter AC feedback boards if you're stocking the wider excitation cabinet. See our Speedtronic turbine control boards collection for more.

Send Us This for a Quote

• Full part number and suffix (IS200BICLH1BBA), plus a label photo
• Confirmation this is for EX2100 excitation
• Generator/turbine model and site
• Quantity and urgency

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