IS220PTURH1BF: a factory-packaged primary turbine protection spare

A Primary Turbine (PTUR) pack failure can hold a whole GE Speedtronic Mark VIe unit offline, which is exactly why many sites keep one on the shelf. This IS220PTURH1B, revision IS220PTURH1BF, is offered as new surplus in the original factory package, with a one-year warranty. It is the turbine-specific I/O pack that links the turbine terminal board to the Mark VIe controller over IONet and passes signals through a DC-62 pin connector.

Why the PTUR is a spare worth stocking

The PTUR carries the machine's speed sensing, primary overspeed trip and automatic synchronizing, so it sits directly in the startup and protection path. A factory-packaged unit lets you standardize on a known revision and cut downtime when a pack finally does fail, because auto-reconfiguration lets the controller download baseload, boot code, firmware and parameters to the new pack once it is enabled in the ToolboxST Component Editor. Keeping the revision consistent across your spares also simplifies TMR sets, where the <R>, <S> and <T> packs should match.

Confirm the diagnosis before you open the box

Even with a factory-sealed spare on hand, confirm the old pack is genuinely at fault before you swap it, so the spare stays available for a real failure:

• Field sensors: a lost or noisy speed or voltage signal usually starts at the magnetic pickup, the PT or the wiring, not the pack.
• Terminal board and DC-62 connector: reseat and inspect for corrosion, moisture or loose terminals on the TTURH1C board.
• IONet: check both Ethernet cables, the switch and the controller if the pack reads offline.
• Power feed: verify control power to the pack; the soft-start circuit can mask a marginal supply.
• Diagnostics: read the pack's ToolboxST alarms and compare cores in a TMR machine before condemning the hardware.

IS220PTURH1B versus H1BF: the group and the revision letter

IS220PTUR is the primary turbine function; H1B is the hardware group; the trailing F in IS220PTURH1BF is the hardware revision of that group. Match both the group and the revision to your installed pack, as H1A and H1B are not the same group, and use our GE Speedtronic Part Number Decoder to read your label with confidence.

How the pack ties into speed, flame and the 52G breaker

On its TTUR terminal board, the PTUR handles four passive magnetic speed inputs plus generator and bus voltages for automatic synchronizing, and GE documentation for this pack also lists flame-detection and shaft voltage/current signals among the protection inputs routed through the board. The TTUR board provides the permissive synchronizing relays and manages the 52G main-breaker coil, so the pack's outputs reach the breaker through that board rather than directly. See Mark V vs Mark VI: DS200 to IS200 for how these Mark VIe packs relate to earlier Speedtronic generations.

What we need to quote your IS220PTURH1BF

Send the full label part number (IS220PTURH1BF), the revision letter, a photo of the label, the turbine and control model, simplex or TMR, quantity, and how quickly you need it. Tell us if you are building or replenishing a TMR spare set so we can match revisions.

Ask for a quote

This IS220PTURH1BF is new surplus in the factory package. Request a Quote for a 24-hour response, worldwide DDP shipping and purchase orders accepted. Browse related inventory under GE Mark VI IS200 Boards.

General Information about the Product
Part Number	IS220PTURH1B Mark VI IS220
Description	IS220PTURH1B By General Electric IS220PTURH1BF Turbine I/O Pack NSFP
Condition	newSurplusFactoryPackage With 1 Year Warranty.