About the IS200TRPAH1AFB
The IS200TRPAH1AFB model is labeled a Turbine Primary Trip model as part of the Mark VI series. The Mark VI series, and thus the IS200TRPAH1AFB model, was manufactured by General Electric. The Mark VI Turbine Control System Series containing this IS200TRPAH1AFB product, as it is known at length, exists with a specific set of possible functional applications in the management and control systems of General Electric-compatible wind, gas, and steam turbine automated drive assemblies. This must be treated as quite the significant functional upgrade upon the gas and steam-based possible settings of the more rudimentary Mark V Turbine Control System Series of a similar full extended series title that used to exist as the industry standard. With this being the case, the IS200TRPAH1AFB printed circuit board product's greater Mark VI Turbine Control System Series has to be described as something of a separately-valuable GE Mark product series iteration, given its additional status as one of the last-developed GE Mark product series to incorporate the patented Speedtronic control system technology into a number of its different product offerings.
Hardware Tips and Specifications
The TRPA model is used with YTUR or PTUR I/O packs and TTUR terminal boards. It is used to produce different inputs and outputs. Some of the inputs and outputs of the TRPA model are twelve passive pulse rate devices that will sense a toothed wheel; the toothed wheel measures the turbine speed; depending on the system type the IS200TRPAH1AFB model is used with, there can be six active pulse rate inputs when used in Triple Modular Redundant sections, two for each of the TMR sections. Another I/O type that the TRPA model will produce is one 24-125 Vdc fail-safe ESTOP input which can remove power from associated trip relays. There are specific models that the IS200TRPAH1AFB model can be used with based on the board revision. This model can be used with IS20PTUR models, but due to its H1A revision, it cannot be used with IS200YTUR models. There are slight functional differences between the IS200TRPAH1AFB and TRPAH2A models; this model has a 24 Vdc output contact rating, while the TRPAH2A models have an output contact rating of 125 Vdc.
During the operation of the IS200TRPAH1AFB model failures can occur. If the model is being used in 240 Vac applications, the most likely cause for failure is due to inadvertent connections between the 125 Vdc and ac voltage creation. When creation occurs with the dc and ac voltages, the sum of the peak ac voltage and the 125 Vdc will be applied to MOVs connected between the ground and the dc voltage. When being used in 120 Vac applications, however, the MOV rating is able to withstand the peak voltage without a failure occurring. Interestingly enough, this IS200TRPAH1AFB Aeroderivative Turbine Primary Trip Terminal Board product's group one Mark VI Turbine Control System Series has a set of important implications specifically on this IS200TRPAH1AFB Aeroderivative Turbine Primary Trip Terminal Board device's voltage ratings. For starters, this IS200TRPAH1AFB Aeroderivative Turbine Primary Trip Terminal device accepts a nominal input voltage of 24 V dc nominal voltage. Some of this TRPA-abbreviated Mark VI Series product's other relevant voltage rating characteristics include its:
- 5 A dc resistive
- 3 A dc with L/R = 7 milliseconds and no suppression
- 3 A dc with L/R = 100 milliseconds with suppression
- Active Voltage Clamp Limiting max. voltage below 60 V dc
