Asked Question
- What does ups protect my device from?
- What should I do to use my UPS longer without a failure?
- Can I increase the power of UPS by adding batteries?
- Can we feed boiler , rolling shutter motor loads with UPS ?
- How to choose an uninterruptible power supply ?
- What are the advantages of IGBT rectifier UPS ?
- Difference between UPS and generator
1- What does ups protect my device from?
- UPS is especially used with IT systems and personal computers to prevent data loss in case of a failure at mains and to protect the devices from the damaging effects that can be caused by mains. These damaging effects are;
- Random or regular power cuts,
- Voltage drops caused by inefficient capacity or constant low/high mains voltage.
- General low quality of power,
- Harmonic distortions, unstable frequency, sudden voltage jumps and noise. (Harmonics can be summarized as; high frequency vibrations that are caused by the loss of sinus waveform of mains when a nonlinear load is in use or high power load is activated at a close facility)
2- What should I do to use my UPS longer without a failure?
Generally, all electronic circuit components, so that the accurate running, life, reliability of devices that they are used in, are decreased by overheating. For that reason, cooling fans are used in high power devices for air ventilation. These fans blow out the hot air from inside the UPS to prevent heat. If your UPS is used in a climatised room, you will increase the life of both UPS and dry type batteries used with the system.
3- Can I increase the power of UPS by adding batteries?
Batteries do not effect the power of UPS. Batteries determine the backup time of UPS when mains cut off. So that by increasing the battery amount, you can increase the backup time not the power of UPS
4- Can we feed boiler , rolling shutter motor loads with UPS ?
Every UPS that is selected with the suitable power can be used with boiler, rolling shutter motor loads. But, when a modified sinewave output waveform UPS is used instead of pure sinusoidal output waveform it causes noise and overheating of motor. To prevent this, usage of true sinewave output UPS is recommended.
5- How to choose an uninterruptible power supply ?
- If you have a limited budget, choose a standby (also called “off-line”) UPS that switches to battery power when power goes out.
- Choose an “on-line” UPS if you need unlimited backup power.
- 3- Select a “line-interactive” UPS if your needs fall between the two other types.
- Determine the total power needs (in watts and volt-amperes) of equipment you will connect to the UPS.
- Choose a UPS that equals or exceeds the total power requirements of the equipment that you’ll connect to it.
- Compare the following five specifications for different models: maximum surge current (expressed in amps – more is better), surge suppression (expressed in joules – more is better), suppression response time (faster is better), battery recharge time (faster is better), and number of AC outlets (more is better).
- Find out if the unit under consideration has a replaceable battery, and if the battery is user-replaceable.
- Compare battery operating times (how long the UPS will keep equipment running after power failure).
- Look for a unit with modem surge protection and electromagnetic interference (EMI) and radio-frequency interference (RFI) noise reduction if you need those features.
- Check for alarms or LEDs that indicate wiring problems, whether the equipment is running on UPS battery, and whether the battery is low.
- If you are buying a more expensive unit, get one with software that automatically saves documents, closes applications, and turns off equipment when power goes out.
- Compare warranties and insurance guarantees.
6- What are the advantages of IGBT rectifier UPS ?
Thanks to DSP controlled power factor corrected IGBT rectifier provides us higher input power factor, lower input current total harmonic distortion, wide input voltage and frequency tolerance. Inform UPS systems provide ≥0.99 input power factor PFi, and ≤ 5% input current total harmonic distortion THDi. High power factor helps you to consume less reactive power and pay lower electrical pay out. It provides minimizations of cable cross-sections, associated switchgear, transformer and generator sizing requirements. Low input current THDi avoids disturbance to other loads connected upstream the power distribution bus and interference reflected to the mains.
7- Difference between UPS and generator :
The primary purpose of generator system as well as the UPS system is the same – to provide backup power. During power outages, the electronic devices are protected from damages and are able to work with such kind of alternate power resources. Yet, there are few major differences between the generator system and the UPS system that causes the dissimilarity in few of their applications.
Comparative Features of the Generator System:
- It can be either portable or of the standby type; depending upon the size.
- The working principle involves conversion of mechanical energy into electrical energy.
- The reliability of the backup power mainly depends on sizing of the generator system.
- There is a choice of either a manual switch or an automatic switch to turn on the generator system in case of power failure.
- There may be emission of harmful gases during the course of its working.
- Most of the generators produce unpleasant noise while in operation. The generator system provides backup power for a very long time. It also serves as an alternate power source.
Comparative Features of the UPS System :
- The UPS system is most often portable, due to its smaller size.
- The working principle involves conversion of the alternating current (AC) into direct current (DC); which is then stored as chemical energy in the batteries. This energy is further converted to DC which in turn is supplied to the device.
- The reliability of the UPS system mainly lies on the proper functioning and operation of its battery.
- Automatic switches are inbuilt into the UPS system to provide the immediate power backup in case any disruption or failure in the primary supply.
- It is free from any kind of emission during its functioning.
- The UPS system does not cause any disturbing noise while in operation.
- The backup power offered by the UPS system is for a shorter duration. Most often it is enough to ensure the safe shutdown of the connected devices.
- With the basic knowledge about the primary differences between the generator and the UPS system, it will be easier to make the choice that best fulfills your backup power needs.
