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
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 .
Missing Neutral in 3 Ph Supply to UPS - CR4 Discussion Thread
2013年8月19日 · - One 3 Ph UPS - 2 Sources of Power, One 3 phase 3 wire and other 3 phase 4 wire. Best option for him is to use 3 Phase 4 wire source normally. If 3 phase 4 wire source fails. - UPS supplies load from batteries. - Batteries of UPS fully drained - He has to continue supply to loads, He can switch on 3 phase 3 wire source.
Outgoing Feeder RCBO Trips During UPS Normal Source Restoration
2023年12月28日 · The testing procedure is as follows; The main incomer of the UPS will be disconnected manually and the load will run on the ups battery for around 10 minutes, and the main source will be restored after that, hence ensuring that the UPS is healthy, this is the normal routine for 10 years old ups during these years.
Using a 60 Hz Power Supply with 50 Hz Equipment
2008年8月21日 · Re: Power supply designed for equpment is 60 HZ can we use same in 50 HZ supply 08/21/2008 5:59 AM We have the supply LT voltage 960 volt 50 Hz and 6.6 kv for HT and Frequency is 50 HZ in our plant.
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..
Intellipower 1.6KVA UPS Issues - CR4 Discussion Thread
2012年7月16日 · I understand that the fan and light are working when the UPS giving power by battery (back up mode) but these doesn't works when power available on UPS input terminals. This case, the possibility is your input power supply to the UPS is not rate voltage, I mean it should less than 240V. Check and clear it. Byee
How to Synchronize from diesel generator to Grid power system
2009年3月18日 · 1. Have UPS of 1 min. capacity for each 13 production lines. 2. Have Automatic Mains failure DG start facility that whenever the plant mains supply failes, DG shall start within 6 seconds and feed power to selected feeders. Again, whenever Mains supply is resumed, DG shall automatically stop & plant shall run on mains supply.