Question about NEC APC Smart-UPS 3000 RM 3U (050-01800-000) UPS System
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Posted on Jan 02, 2017
just remove the battery again & dont put it back till 30 minutes then connect ur batter again.
Posted on May 28, 2008
i think by replacing the battery has not been the solution to the problem
u need to check the battery charging voltage when turned ON with main electricity, if no voltage present from charger, there is no question of battery getting charged and also once the battery is down with charge it may not re charge hence the indicator and alarm.
recomended to nearest service centre
Posted on Sep 13, 2008
you juz need to re set the ups by turning off the ups and the main source.. and if you install a smnp card unscrew the screw and take out the web card and insect in back again. than you turn on the main source after that you will than power up the UPS..
Posted on Mar 24, 2009
On this unit, the likely culprit is the battery and that it needs to be replaced.
With that, you may want to think about the pros and cons of replacement versus buying an entirely new unit.
This unit is a relatively low end ups and the surge supression uses MOVs that wear out with repeated absorption of energetic spikes. That's why the better (and higher cost) UPSs and surge suppressors don't use them. They're not really that good anyway due to their relatively high transient impedance. The better equipment uses a "transorb" -- basically a back-to-back high voltage zener diode optimized for low breakover impedance and high instantaneous power capability. Unless the transient exceeds the design parameters of the circuit, these do not wear out and do not degrade. That being said, I will assume that you would likely replace this unit with a similar one.
The flashing may not be the battery at all and may be the charging circuitry, thus your new battery may not live very long (half the life that you would expect.
Many batteries out there are refurbs and have issues as all used parts do.
If you contact APC, they will likely give you a 35% discount on purchasing a new product.
The difference in price in the battery replacement vs. ups replacement at this level may only be a few dollars more.
I promise that I am not a UPS salesman, I just deal with many on a daily basis; therefore I am giving my two cents to try to thelp you avoid problems a year from now.
Posted on Dec 30, 2009
Testimonial: "Outstanding answer with right amount of detail. I swapped battery with identical APC UPS that I have and vfd that battery was cause of warning tone."
I have the same PCB on my Deltec PRR2200i. I at least know a few things about the circuit now. I had 11 transistors explode on mine and am replacing them now. Sadly I have not managed to track down a circuit diagram.
Posted on Mar 30, 2010
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