DS200SDCIG1AFB: New-Surplus Open Box Stock

This DS200SDCIG1AFB is a G1-group SDCI board – GE's DC Power Supply and Instrumentation Board for its DC2000 static drive family, offered here as new-surplus, open-box stock. It's part of the Mark V DS200 series because DC2000 drives of this kind commonly serve as auxiliary or starting equipment on turbines controlled by a Speedtronic Mark V panel. The board packs several power supplies, motor field power circuits, driver circuits for armature SCR gating, and instrumentation circuits reading AC line and DC motor signals – armature current and voltage, field current and voltage, voltage magnitude, and phase sequence.

As a G1-group unit, it includes an internal field exciter circuit rated at 10 amps or less, unlike G2-group SDCI boards, which are built for an external exciter instead. The SDCI works directly with drive-side field wiring, current transformers, and shunts – it does not plug into the Mark V's <R>/<S>/<T>/<C> control cores the way boards like TCDA do.

What "New Surplus Open Box" Means Here

This unit is genuine GE factory-sourced material that has been removed from its original retail packaging – for inspection or inventory purposes – but has not been installed or field-used. It's backed by the same 1-year warranty as our other new-surplus stock; ask for label photos with your quote request if you'd like to confirm cosmetic condition first.

Diagnose Before You Ever Need to Swap It

Because this is likely a spares-program purchase, it's worth knowing now how an SDCI fault should actually be diagnosed. Each protective fuse – FU1 (115 VAC supply), FU2/FU3 (signal-level power), FU5/FU6 (internal NRX/MOV assembly) – has a dedicated LED that lights when that fuse blows. When it does:

• Cut all power to the drive and let the board discharge fully before opening the cabinet further – hazardous voltage can remain present even after shutdown.
• Inspect the field wiring on that circuit for a short or insulation breakdown before replacing the fuse. A single blown fuse can be a fluke; one that keeps blowing is telling you about a wiring or field-device fault far more often than a bad board.
• Clear that fault before fitting a replacement, or the new board is likely to fail the same way almost immediately.

When the time comes to 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 is wired for an internal exciter before assuming this G1 board is the correct group.

What This Part Number Tells You

DS200 is the board series prefix, SDCI is the DC Power Supply and Instrumentation function, G1 is the product group (internal field exciter, ≤10 A), and FB is this unit's specific revision combination. GE's instruction manual for this board family is GEI-100173. G1 and G2 represent genuinely different exciter configurations, not a simple revision sequence, so match the group to your equipment.

Related Boards and the Bigger Picture

Since the SDCI belongs to the drive/exciter side of the system, it isn't grouped with Mark V control-core boards like TCDA or TCEA in day-to-day troubleshooting. To see where the SDCI sits in the broader Mark V DS200 board family, see our GE Mark V DS200 Boards Explained guide and the GE Speedtronic Part Number Decoder. If a longer-term platform migration is on your roadmap, see our Mark V vs Mark VI: DS200 to IS200 guide.

What to Send for a Quote

• Full part number and suffix, e.g., DS200SDCIG1AFB
• A photo of the existing card's label
• Drive/turbine model and confirmation of internal vs. external exciter
• Quantity
• Whether this is for stock or an active requirement

Request a Quote

This DS200SDCIG1AFB is new-surplus, open-box stock with a 1-year warranty (see below). Pricing isn't published online 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	DS200SDCIG1A Mark V DS200
Description	GE General Electric DS200SDCIG1A DS200SDCIG1AFB Multi Input/Output Instrument Board NEW OPEN BOX
Condition	newSurplusNoBox New Surplus Open Box. With 1 Year Warranty