UPS Power and Raw Power - CR4 Discussion Thread - GlobalSpec
2010年3月17日 · Conversely, in addition to being "clean" of spikes or harmonics, UPS power is there (at least for a while) if and when the RAW power is not available without any disruption in operation. UPS will buy time to get a back-up generator operating, or to facilitate an orderly shut-down of critical electronic equipment without damage or loss or data.
UPS Transformer ?!? Specifications - Power Supply?
2011年7月4日 · The RV has a converter which makes a stable 12 power supply but is a lousy charger. The heart of the converter is a ferroresonant transformer. I will admit that I do not understand all the theory of operation for this type of transformer but in practice I can tell you it never attains an adequate voltage to charge a lead acid battery.
What's the Current at the Input for a UPS? - GlobalSpec
2009年4月6日 · If, UPS has a 125A main MCCB, we must supply power with at least 125A MCCB. Supply cable must have ampacity to meet the125A MCCB. This is true even the load current is 60A. For bypass circuit, 3phase input 1 phase output transformer (primary V connected, secondary inverted v connected) has very tricky primary currents.
UPS Supply and Raw Power - CR4 Discussion Thread
2011年10月13日 · Care is to be taken so that when the contactor for UPS power is energised , its auxilary contact ( NC ) should prevent the RAW power contactor from energising . When the UPS power fails the auxiliary contact of UPS power contactor would make the RAW power contactor to pick up. Here the hitch is a bumpless change -over is very difficult to achieve .
Subwoofer Near UPS - CR4 Discussion Thread
2009年11月15日 · Will it affect my UPS, i mean in terms of more noise in electrical current so that can affect my Power Supply or perhaps affecting in transfer time (if my UPS is offline type) so it needs more time to transfer from primary source to secondary source, etc..
UPS - CR4 Discussion Thread - GlobalSpec
2008年2月17日 · The power supply from the flywheel system to the generator starting system can be monitored by the UPS system to add even greater starting reliability. The design engineer should understand the owner's objectives, maintenance and operations procedures and comfort level concerning back up times.
UPS Calculation and Diversity Factor - CR4 Discussion Thread
2011年5月29日 · When a UPS powers equipment which presents a reactive load with a low power factor (e.g., a computer), neither limit may safely be exceeded. Kilowatt. The kilowatt is equal to one thousand (103) watts. This unit is typically used to express the output power of engines and the power consumption of electric motors, tools, machines, and heaters.
Emergency Escape Lighting - CR4 Discussion Thread - GlobalSpec
2024年8月30日 · The 2x50% configuration sounds like 2nr UPS supplying the lighting load and if one fails, half the lights go out or all the lights operate for half the time that both would supply for. This implies that the UPS is supporting the whole of the lighting installation as part of a business continuity plan rather than a means of illuminating the ...
Emergency Power for Overhead Crane - CR4 Discussion Thread
2011年7月15日 · The crane can't pull that much power, especially when it is dropping a load using gravity. Maybe a proper sized UPS (Uninterrupted Power Supply) can give the operator enough time to safely drop the load until power is restored. This way you don't need a generator... Just a couple batteries to supply control power for a limited time after ...
3 Phase to Single Phase Voltage Conversion in Stabilizer
2010年2月4日 · Large UPS are designed to operate off a three phase supply to handle the high current (and it sounds like your UPS is powering more than just a computer or server room). Additionally a "stabilizer" in this case could be being used as an additional supply power quality filter for the UPS (to further protect the UPS). _____