IS200RAPAG1ABB: Rack Power for GE's Innovation Series Board Rack

Pull the RAPA from an Innovation Series board rack and everything else in it goes quiet. That is the job description of the IS200RAPAG1ABB: GE's Rack Power Supply Board from the Mark VI-era Speedtronic hardware family, configuration group G1A, revision BB. It takes a 25 kHz square-wave input at 48 V from an external supply and regulates it into the DC control voltages the rest of the rack draws through the P1 backplane connector. The faceplate — a wide, two-slot front secured with screws and fitted with mounting clips — carries the working surface of the board: two status LEDs (IPOK for input power, MPOK for module power), a reset button, and an opening that exposes four test points for direct rail measurement.

G1A or G1B? Match the Group Before Anything Else

This listing is the G1A group — and that is the first thing to verify, because the RAPA family also ships as G1B, and the two are distinct configurations. We have found no reliable documentation establishing them as interchangeable, so the safe engineering position is: replace a G1A with a G1A. Your installed board's label carries the full string; so does its onboard identity — the board stores its ID and revision in a 1024-bit serial memory device readable through the P1 connector's BRDID line. If the label is unreadable or the board is inaccessible, tell us what the rack controls and send photos of whatever is legible; matching ambiguous units is a normal part of our day.

A Pre-Purchase Troubleshooting Checklist

Rack power supplies get replaced on suspicion more than on evidence. Five checks separate the two:

• Is the input even there? A dark IPOK LED says the 48 V, 25 kHz feed is missing — which is an upstream problem in the external supply or its wiring, not a RAPA fault. Chase the feed before the board.
• Is a neighbor pulling the rails down? IPOK lit with MPOK dark means outputs out of tolerance — but a shorted board or backplane fault elsewhere in the rack produces the same signature. Reduce the load (pull boards, safely, with the rack de-energized between tests) and watch whether the rails recover.
• Is it just the fuse? There is a 1 A, 250 V fuse on the board. Check it before condemning the whole supply — and if it blew, ask why before installing the replacement board into the same fault.
• What do the test points say? The faceplate opening exposes the documented P5, P15, N15, and DCOM points. Measured rails beat inferred ones.
• Is the rack alive but silent? The board participates in power-on and reset signaling. A rack that has power yet never boots can be a supply-side reset problem masquerading as processor failure — worth noting in your RFQ either way.

And confirm the rack itself: this supply belongs to the Innovation Series board rack, not to the Mark VI VME I/O racks, which use different power hardware. When the label and the symptom disagree, believe the label.

What Open Box Means for This Supply

This IS200RAPAG1ABB is new surplus without its original outer carton — unused, factory packaged, sold as open box. For a power supply board, unfielded stock has a particular appeal: no accumulated thermal hours on the switching components, no unknown load history. The precise condition and warranty statement for this unit is in the table at the bottom of this page; what you see there is what applies.

Information We Need to Quote Accurately

• Full part number including revision: IS200RAPAG1ABB — and confirmation the slot takes a G1A
• Label photo of the installed board (or the clearest photo you can get)
• What the rack controls, plus the control system generation from your plant records
• Observed symptoms — LED states, fuse condition, rail measurements if you took them
• Quantity, and whether this is an emergency replacement or planned spares stocking

Start Your IS200RAPAG1ABB Quote

Hit Request a Quote with the list above; a firm answer comes back within 24 hours. Worldwide DDP shipping means one landed cost with customs handled, and we accept purchase orders. To round out rack spares in the same order, the GE Mark VI IS200 Boards collection is the shortest path, with the complete range under GE Speedtronic Turbine Control Boards — and the GE Speedtronic Part Number Decoder if you want to decode the rest of your rack before you write the RFQ.

General Information about the Product
Part Number	IS200RAPAG1A Mark VI IS200
Description	GE IS200RAPAG1A IS200RAPAG1ABB Rack Power Supply Board Mark VI OPEN BOX
Condition	newSurplusNoBox Factory Packaged. With 1 Year Warranty.