Battery selection and sizing alongwith the inverter sizing are key components of design of a DC or AC UPS system for industrial purposes - specically when these systems service drives/loads critical to operation and safety of plants.
A well written stuff on selection with a performance comparison chart between various types of batteries is available at http://www.solidstatecontrolsinc.com/techhpapers/pdfs/selectionsizingups.pdf
The above stuff also details inverter sizing.
Battery sizing considerations are better explained @ http://ecmweb.com/market/electric_switchgear_battery_sizing/
Friday, February 18, 2011
Inner Strength-WILL- Bhartrihari's Subhashitani
This quote provides insight into what can be achieved through inner strength - the WILL. Quote is from Subhashitani by Bhartrihari.
रथस्यैकं चक्रं भुजगयमिताः सप्ततुरगाः
निरालंबो मार्गश्चरणविकलो सारथिरपि।
रविर्यात्यंतं प्रतिदिनमपारस्य नभसः
क्रियासिद्धिः सत्त्वे भवति महतां नोपकरणे॥
Each day on earth, the sun travels to the end of endless sky in a single wheeled chariot drawn by seven horses controlled by serpents on an unsupported road with a charioteer whose feet are diabled.
Likewise, the actions of great people are accomplished by their inner strength and not by the means they have.
रथस्यैकं चक्रं भुजगयमिताः सप्ततुरगाः
निरालंबो मार्गश्चरणविकलो सारथिरपि।
रविर्यात्यंतं प्रतिदिनमपारस्य नभसः
क्रियासिद्धिः सत्त्वे भवति महतां नोपकरणे॥
Each day on earth, the sun travels to the end of endless sky in a single wheeled chariot drawn by seven horses controlled by serpents on an unsupported road with a charioteer whose feet are diabled.
Likewise, the actions of great people are accomplished by their inner strength and not by the means they have.
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