DS200SDCIG2AHB, Offered as Open-Box Stock

This DS200SDCIG2AHB is a G2-group SDCI – GE's DC Power Supply and Instrumentation Board for the DC2000 static drive line – offered here as new-surplus, open-box material. It's cataloged in the Mark V DS200 series since DC2000 drives commonly run as auxiliary or starting equipment on turbines controlled by a Speedtronic Mark V panel. The board includes several power supplies, motor field power circuits, driver circuits for armature SCR gating, and instrumentation circuits for AC line and DC motor signals: armature current and voltage, field current and voltage, voltage magnitude, and phase sequence.

Being G2-group, this unit is configured for an external field exciter, the reverse of G1-group SDCI boards, which carry an internal exciter circuit rated at 10 amps or less. This distinction is functional, not cosmetic – a G1 board will not run correctly on a drive wired for an external exciter. Regardless of group, the SDCI ties directly into drive-side field wiring, CTs, and shunts rather than the Mark V's turbine control cores.

A Word on Open-Box Condition

Open-box here means genuine new-surplus factory stock removed from its original retail packaging for inspection or inventory handling, but never installed or field-used. It carries the same 1-year warranty as our other new-surplus listings; ask for a label photo with your quote request if cosmetic condition matters to you.

Diagnose Before You Ever Reach for This Spare

Since a board like this is often bought ahead of need, it's worth knowing what actually causes an SDCI fault before assuming a swap is required later. Every protective fuse – FU1 (115 VAC supply), FU2/FU3 (signal-level power), FU5/FU6 (internal NRX/MOV assembly) – has its own LED that lights when it blows. When that happens:

• Remove all power from the drive and let the board discharge fully before handling it – hazardous voltage can persist after shutdown.
• Inspect the field wiring on that circuit for a short or degraded insulation before replacing the fuse. A blown fuse once can be incidental; one that blows repeatedly is telling you about a downstream wiring or field-device fault, not a bad board.
• Fix that fault first, then replace the fuse or the board, or a brand-new unit is likely to fail the same way almost immediately.

When you eventually install this board, transfer the outgoing card's jumper and switch settings exactly – JP1 (MD control source jumper), JP2 (AC contactor drop-out time jumper), SW1 (AC line CT burden selection based on nominal DC output current) – and confirm your drive's actual exciter wiring, since G1 and G2 are not interchangeable.

Decoding DS200SDCIG2AHB

DS200 is the board series prefix, SDCI identifies the DC Power Supply and Instrumentation function, G2 is the product group (external field exciter), and HB is this unit's specific revision combination. GE's manual reference for this board family is GEI-100173. Treat G1 and G2 as distinct exciter configurations rather than simple revision levels of the same board.

Related Boards and Broader Context

Because the SDCI serves the drive/exciter side of the system, it isn't part of the same rack-level troubleshooting group as Mark V control-core boards like TCDA or TCEA. For how the SDCI's DS200 numbering fits within the wider Mark V board family, see our GE Mark V DS200 Boards Explained guide and the GE Speedtronic Part Number Decoder. If a platform migration is part of your long-term plan, see our Mark V vs Mark VI: DS200 to IS200 guide.

What to Send With Your Quote Request

• The full part number and suffix, e.g., DS200SDCIG2AHB
• A label photo, if available
• Drive/turbine model and confirmation of internal vs. external exciter
• Quantity
• Whether this is for stock or an active requirement

Request a Quote

This DS200SDCIG2AHB is new-surplus, open-box, factory-packaged stock with a 1-year warranty (see below). We keep pricing off our site since these quotes depend on exact revision match and current availability – submit a Request a Quote and expect a reply within 24 hours. We ship worldwide DDP, accept purchase orders, and support both spares planning and urgent downtime orders.

General Information about the Product
Part Number	DS200SDCIG2A Mark V DS200
Description	GE General Electric DS200SDCIG2A DS200SDCIG2AHB PCB Mark V OPEN BOX
Condition	newSurplusNoBox Factory Packaged. With 1 Year Warranty.