Why UPS, Power Inverter Restarts or Shutdown Computer (Solution)

It might be happening to you that whenever power fails, your computer either restarts or shutdown completely even though you have connected UPS (uninterruptible power supply) or Power Inverter to it. It is a weird situation that UPS totally fails to perform its duty. The problem can be fixed but it requires technical help from an expert. Here, I have discussed in general why it happens and how to resolve the problem.



Reason:
The major reason behind this problem is that switch over time of UPS is longer than the threshold of power supply of computer. Mostly, good computer power supplies have threshold of almost 15-20 milliseconds which is generated by capacitors inside them. Any interruption of electricity longer than the specified duration can restart or shutdown the computer.

If you are using a good quality expensive power supply then issue is solely related to the relay of UPS. Relay is a device which is responsible for switching over from external power source to backup battery power. Poor quality mechanical relays have longer switch over time. So, the problems arises.

Capacitor-Relay-UPS-PSU

The cheaper modified (simulated) sine wave power inverters that are designed to run with large or small external batteries often cause this problem. Poor relays in them cause longer switch over time from main power source to batteries backup.



Solution:
In majority cases, problem is solely related to UPS or Power Inverter. Several UPS manufacturers now use solid state relays instead of mechanical relays to fix this issue. Solid state relays are extremely efficient and offer lowest possible switch over time.

If problem is actually related to the relay of UPS as discussed above, it can be fixed by replacing the relay with a better quality mechanical relay or solid state relay. On the other hand, if the problem is related to the capacitors of PSU, the problem can be resolved by installing larger capacitors. These are the technical works and can only be done by experts.

Since, an ordinary user who has no knowledge of electronic circuits can not fix the problem by himself. The best way to overcome the situation is by buying a new better quality UPS or Power Inverter. Make sure to confirm from seller that it is really designed for computers and will not cause troubles. Obviously, it is an expensive solution but quite hassle free.

The other easy fix is change PSU of computer. But this might not work in all cases. Changing UPS (or Power Inverter) is the only reliable and money saving solution as discussed above.




Related Posts

EagleGet: A Free Alternative to Paid Download Managers – Review Getting tired of spending money on paid computer applications? It's the time, you should find the alternatives for your needs. EagleGet has plunged in...
Problems and Solutions after Moving from Blogger to WordPress You have moved your blog from Blogger to self hosted WordPress! Congratulations, you did perfectly right. Blogger platform is good in its own way but ...
Functions of Different Power Inverter/UPS Buttons, Switches Power Inverter is a device used to invert batteries direct current into alternating current for providing backup to different appliances when main ele...
Best Freeware Software For Windows PC – Descriptive List Here is the descriptive list of popular software which are offered by developers free of charge. Many of them are alternative to equivalent paid softw...
How To Backup Data with SSD If we compare the technology of computers we have today with the technology we had 25 years ago, we will observe a major leap of progress. With the im...
K-Lite Mega Codec Pack Review – Best Windows Codec Pack Windows is the most popular and commonly used operating system today. Despite of being the best in the software market, this OS does not offer everyth...
FAQs About UPS & Power Inverters Here are few frequently asked questions with answers regarding UPS and Power Inverters. Q.1 What is UPS? UPS is an uninterruptible power supply wh...
About Windows 8, An Honest Opinion Since the release of Windows 8, we are hearing complains that this is the worst product ever developed by Microsoft. Critics are the leaders in this s...
29 Comments

Add a Comment

Your email address will not be published. Required fields are marked *