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The SDU AC B-Series is a compact, “Off-Line” DIN rail mountable UPS, which provides conditioned power to
sensitive electronic equipment in an industrial environment� It supplies connected equipment with stepped
approximation to sinewave input during power outage to simulate the power generated by the utility�
Figure 1: Transition to Back-Up Mode Due to Power O uta g e
The SDU AC - B Series is a compact, “Off-Line” DIN rail mountable UPS, which provides conditioned
power to sensitive electronic equipment in an industrial environment. Itsupplies connected
equipment w ith stepped approximation to sinewave input during power outage to simulate the power
generated by the utility.
Input voltag e range is 75% to 120% (ideal prote c ti o n for the critica l connected loads). Ba tter y charging
occurs automaticallywhen AC power is applied, no need to switch ON the UPS. The SDU also includes
an autom atic self-test feature to test the UPS function and batter y. UPSWatch will record the event on
EVENT LOG. UPS immediately sw itches to AC Mode to provide load power if AC is available from util i ty.
This SDU AC - B Series has a communication port that can accommodate an optional communication
card.
Figure 1: SDU-B Output Waveform
Input voltage range is 75% to 120% (ideal protection for the critical connected loads)� Battery charging occurs
automatically when AC power is applied, no need to switch ON the UPS� The SDU also includes an automatic
self-test feature to test the UPS function and battery� UPSwatch will record the event on EVENT LOG� UPS
immediately switches to AC Mode to provide load power if AC is available from utility�
This SDU AC B-Series has a communication port that can accommodate an optional communication card�
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