About the IS200TTURH1BBB
This IS200TTURH1BBB General Electric printed circuit board was originally designed to be a member of GE's Mark VI Speedtronic Series of turbine control systems and turbine control system components. This TTUR-abbreviated printed circuit board or PCB for short was actually manufactured by GE Industrial Systems, a subsidiary manufacturing company under the broader General Electric products umbrella that is in charge of the manufacture of all Mark VI Speedtronic Series products. This IS200TTURH1BBB PCB can be more specifically defined by its original instructional manual-defined description as a Terminal Turbine Board Assembly. This is a modified version of an original IS200TTURH1 parent circuit board; possessing three significant product revisions all rated at "B" grades.
Hardware Tips and Specifications
This IS200TTURH1BBB Terminal Turbine Board's series of unique and interesting hardware component parts are perhaps best understood when contextualized with the greater intended functionality of this printed circuit board. For starters, the primary intended application focus of the IS200TTURH1BBB Terminal Turbine Board is described in original factory-issued documentation as its providing of simplex signals to its greater VTUR Turbine Control Board assembly through use of the J7 connector. Another secondary function of this TTUR-abbreviated terminal board is its steady control of the VTUR assembly's 52G main breaker relay coil. As mentioned above, this IS200TTURH1BBB product is not actually the original product developed for its specific Mark VI Turbine Control System Series functional product role, as that would be considered the IS200TTURH1 parent PCB notably not utilizing this IS200TTURH1BBB product's three B-rated significant revisions. This IS200TTURH1BBB device's three revisions are actually not as identical as they seem, as two of them exist as functional styles of Mark VI Series revisions and the third an artwork configuration revision. This IS200TTURH1BBB product's artwork configuration revision is considered that revision style as it deals specifically with the placement of individual pieces of circuitry and hardware components on this IS200TTURH1BBB device's base printed circuit board.
Now that some of the intended functionality of this IS200TTURH1BBB product has been described, it is possible to explore its various hardware offerings. For starters, an immediately-noticeable hardware component affixed to this PCB's base board is its set of two terminal blocks, both of which are pluggable for installation and maintenance purposes. These two terminal blocks each accept 24 terminal input/output connections each, for a total of 48 total possible I/Os on the face of the IS200TTURH1BBB board. One other handy piece of hardware accessible to the IS200TTURH1BBB board user is its series of noise suppression filters, which interface with their corresponding JR1, JS1, and JT1 connector ports to connect with the central VTUR turbine board. This TTUR-abbreviated printed circuit board has a nominal 125 V dc to breaker coil power supply voltage, and possesses 12 total passive speed pickups. As evidenced by this product's underwhelming IS200 series tag; the IS200TTURH1BBB PCB does not make use of any sort of special assembly version, although it is modified through its three B-rated significant product revisions. All of the hardware components available to this TTUR Terminal Board should be protected well by a layer of conformal-style PCB coating; which is chemically-applied to every surface of every hardware component affixed to this module's base circuit board.
