IS200EXHSG4AEC Open Box: What You're Getting

This IS200EXHSG4AEC is an open-box unit — originally factory packaged, unused, but with the retail packaging opened or damaged in handling. The board itself is a High-Speed Static Exciter Terminal Board for GE's EX2100 excitation control system, the static exciter platform that runs alongside Mark VI or Mark VIe turbine control on the same generator. Like the rest of the EXHS family, it's built as a near-duplicate of GE's standard EXTB terminal board, modified for high-current service with solid-state relay drivers on its DC contactor outputs in place of conventional electromechanical drivers, working with a high-speed contactor for higher-current protective duty. It distributes signals to the exciter's main I/O board (EMIO) through P1/P2 backplane connectors, while handling pilot relay contact outputs, contact inputs, and signal conditioning.

Even though it shares the IS200 prefix with Mark VI turbine control boards, this is a terminal board rather than a VME card — it has no metal installation faceplate and doesn't mount in a VME rack. Expect three D-shell cable connectors along the front edge, eight plug connectors, fifteen integrated circuits, seven relays, a heat sink, and a mix of electrolytic, ceramic, and polyester-vinyl capacitors on the board itself.

Confirm the Diagnosis Before You Install It

Even with a ready spare on hand, it's worth confirming that this board — rather than something else in the exciter — is actually the cause of the fault:

• Check the DC contactor and its coil wiring for continuity. A mechanical or wiring fault on the contactor side produces the same trip symptoms as a failed relay driver on the board.
• Compare relay status and LEDs against the physical wiring rather than relying only on the alarm text, to separate a control-logic problem from a field-wiring problem.
• Check the P1/P2 link to the EMIO board and the EMIO board itself before assuming the fault originates on this terminal board.
• Confirm your application genuinely calls for the high-current EXHS design and not a standard EXTB terminal board — the two are close relatives built for different current ratings.

Once the contactor, wiring, and EMIO link are confirmed clean, installing this board should resolve the fault.

Reading the IS200EXHSG4AEC Part Number

IS200 is the platform prefix, EXHS the function code, and G4AEC the group and revision — G4A marking a later group in the EXHS lineup than the G1A/G2A/G3A boards also stocked in this collection, with EC marking this specific revision. Match the complete string against your unit's nameplate rather than assuming any EXHS board is interchangeable across groups. Our GE Speedtronic Part Number Decoder explains how to work through a full IS200 part number.

Related Boards

The closest relative to this board is the standard IS200EXTB terminal board, built for standard-current service without the solid-state relay drivers. On the rack side, it feeds the EMIO (EX2100 Main I/O) board through P1/P2. If you also maintain older Mark IV/Mark V equipment, see our Mark V vs Mark VI: DS200 to IS200 guide and GE Mark V DS200 Boards Explained article. Browse the rest of the family in our GE Mark VI IS200 Boards collection or the wider GE Speedtronic Turbine Control Boards collection.

What to Include in Your Quote Request

• Full part number with suffix: IS200EXHSG4AEC
• Revision from the label
• Photo of the ID label
• Exciter/turbine model and unit ID
• Planned outage or urgent need
• Quantity

Request a Quote

This IS200EXHSG4AEC is listed as new surplus, open box (factory packaged, box opened), with a 1-year warranty (see table below). We quote every order directly rather than posting prices — submit a Request a Quote and expect a reply within 24 hours. We ship worldwide DDP, accept purchase orders, and support both planned outages and urgent breakdown needs.

General Information about the Product
Part Number	IS200EXHSG4A Mark VI IS200
Description	GE IS200EXHSG4A IS200EXHSG4AEC Printed Circuit Board Mark VI OPEN BOX
Condition	newSurplusNoBox Factory Packaged. With 1 Year Warranty.