SDS2 Trip Computer CPU Power Supply
A qualified DC Power Supply used to provide power to the Nuclear Shutdown System #2 SDS2 Trip Computer CPU. Unit is designed by Tyne to be a direct replacement, with the same "Form, Fit and Function" as legacy power supplies.
Constructed with high quality Mil Spec components.
High efficiency (80% overall).
Mean Time Between Failure: 40 years.
Aged for the equivalent of 30 years.
No fan required for cooling.
Over–current, over–voltage, reverse voltage and over–temp protection.
Tyne's replacement power supply for the SDS2 Trip Computer CPU was designed to satisfy the demanding Nuclear Technical Specification of the original power supply that has been in service for 30 years. The new model has a completely redesigned circuit board using high quality, modern electronic components.
Nuclear power plant owners have expressed recent concerns regarding the quality of replacement power supplies from some vendors because of use of commercial components of sub-standard quality. To address this issue, Tyne designed its power supply from scratch, using custom-wound transformers, and all components positioned for easy inspection by Tyne and its customers.
During re-engineering, Tyne was able to incorporate improvements that came out of customer's operating experience with previous power supplies. Improvements included better accessibility of test points and better cable routing to allow easier maintenance, installation and replacement.
|Stability||Semi-regulated output for bus stability|
|Parallel operation supported|
|Cooling||No fan required for cooling|
|Circuit Protection||Over–current, over–voltage, reverse voltage and over–temp protection|
|Line regulation||< 0.4% over the variation range|
|Load Regulation||< 0.4% from no load to full load|
|Over voltage protection||125% of the output DC voltages|
|ResponseTime||1μs to 1% after a 25% load change at 5A/μs|
|Hold-up time||20 msec|
|Fold back current limit with automatic recovery after overload is removed.|
|Quality Assurance||NQA-1, CSA-Z299.1, CSA-N286.2|