The IS220PTURH1A is a component created by GE for their Mark VI system. The Mark VI is one of the final Speedtronic systems for gas/steam turbine management that was released by GE.
The IS220PTURH1A is a Primary Turbine Specific Primary Trip pack. This component provides an electrical interface between a turbine control terminal board and either one or two Ethernet networks. Outputs from this pack occur through a DC-62 pin connector that connects to an associated terminal board.
The IS220PTURH1A is built with a black outside casing with openings for air circulation. The front of this case has multiple LED indicators, as well as an IR (infrared port.) This port is not used in this pack. Inside this casing, there is a processor board, a second board specific to turbine control, and an analog acquisition auxiliary board. The pack mounts to the TTURH1C terminal board. The processor board has two 10/100 Ethernet ports, flash memory, and RAM, a read-only chip for identification, an internal temperature sensor, and a reset circuit.