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What You Should Know Before Buying The Best UPS For Your Home

What You Should Know Before Buying The Best UPS For Your Home

Would you like to upgrade your current UPS or purchase a new one? No matter why you need a UPS and battery, it is very important to choose the suitable unit for your home. We have put together a list of commonly asked questions with the goal of answering all the points relevant to helping you choose the right UPS and battery for your home.

 

A Glimpse At UPS

 

A Glimpse At UPS

Image source : Pinterest

 

What Is A UPS?

 

A UPS is a device that converts DC power into AC power. It is useful when the power goes out at home.

 

The UPS works by storing current in a battery when electricity is present and then supplying current from the battery to all the appliances when electricity is out.

 

Which Are The Different Types Of UPS?

 

In terms of technology, there are two types of UPS on the market

 

  1. Pure Sinewave: A sine wave UPS provides grid-like power. It reduces noise from fans, fluorescent lights, amplifiers, and televisions, and is more suitable for sensitive items such as laptops, computers, and stereos.
  2. Square wave: A square wave UPS provides power in case of no power.

 

How Are UPSs Of 12, 24, And 48 Volts Different?

 

Each UPS is rated by its voltage and its output power. Volt is the number of batteries required to connect with the UPS, while VA is the maximum capacity the UPS can handle.

 

Usually, UPS applications use a 12-volt battery. In other words, a 12 Volt UPS requires one battery, whereas a 48 Volt UPS requires four batteries.

 

How Does UPS's Eco Mode Differ From Its UPS Mode?

 

In UPS, there are two options:

 

  1. ECO mode: In eco mode, the UPS provides a wider range of voltages from 100V to 290V.
  2. UPS mode: Keep your UPS in UPS mode to ensure quality power in your home and no fluctuations. We recommend that the UPS mode is kept on for all sensitive appliances that require an input voltage between 180 V and 260 V.

 

Power Requirements For UPS At Your Home

 

Power Requirements For UPS At Your Home

Image source : Pinterest

 

1.How Much Power Will You Need?

 

Your "power requirement" is one of the most important factors to consider before buying an UPS.

 

What all electrical appliances will you run at the time of a power outage (like CFLs, tube lights, fans, televisions, computers, refrigerators, etc.)?

 

The power requirement is the sum of the power consumed by a variety of electrical appliances.

 

2. How Do You Calculate The Power Requirement?

 

In the event of a power outage, you want 3 fans, 3 tube lights, 8 LED lights, 1 television, and 1 refrigerator to function. In total, these items will consume as much energy as these will consume individually:

 

A fan, tube light, led light, led television, and refrigerator each consume 70 watts, 7 watts, 70 watts, and 140 watts, respectively.

 

Therefore your total power requirement is (3*70 +3*40 +8* 7 + 1*70+ 1*140) = 596 watts.

 

3. Which Appliances Can You Run On Your UPS?

 

It is recommended to use a UPS for the power backup of lights, ceiling fans, computers, televisions, etc.

 

In order to run appliances such as a refrigerator, washing machine, air conditioner, etc., you need to purchase a UPS with a higher capacity.

 

VA Rating For UPS 

 

1. What Is VA?

 

VA is a Volt Ampere rating. It refers to how much voltage and current the UPS supplies to the equipment.

 

2. Which UPS Is The Best For My Home Based On Its VA Rating?

 

Due to the nature of your appliances, they require more VA than Watts. The ratio is called power factor.

 

Therefore, power supplied (or the VA rating of a UPS) is equal to the power requirement (wattage consumed by equipment) / power factor.

 

Usually, at home, power factor ranges from 0.65 to 0.8. To calculate an average, we use 0.7 power factor:

 

Power of UPS (VA) = 596/0.7 = 851 VA

 

Therefore, a UPS with 900 VA will be a good choice for your home.

 

3. Why Are Volt Amperes Different From Watts?

 

UPS capacities are measured in VA, which is Voltage Amps. Higher the VA, greater the capacity of the UPS to handle peak loads.

 

The wattage of a UPS can be calculated by multiplying the VA rating by 0.8 (power factor of the UPS). For example, 900 VA means 720 watts.

 

Battery For UPS

 

Battery for UPS

Image source : Pinterest

 

1. Why Do UPSs Need Batteries?

 

A UPS's performance is greatly influenced by its battery. During power outages, your appliances will run on the battery's energy.

 

2. What Kind Of Backup Does An UPS Provide?

 

It depends on the battery capacity. This is measured in Ah (Ampere Hours).

 

3. What Is The Best Way For You To Determine Which One You Would Need At Home?

 

Let's reverse the calculation to find out.

 

In order to run appliances of load 851 VA (596 W), you need a battery that provides a backup of two hours.

 

Battery capacity = Power requirement (in VA) * Back up hours (in hrs) / Battery Voltage (in volts)

 

For a lead acid battery, battery voltage = 12 V.

 

Battery Capacity = (851 * 2) / 12 = 142 Ah

 

The performance of the battery decreases with usage, so for best results, you should choose a battery that holds a capacity of 5-10% higher. In this case, a battery with a capacity of 150 Ah will be adequate.

 

When there is no power, you would need a 900 VA UPS and 150 Ah battery to run 3 fans, 3 tubes lights, 8 LED lights, a TV, and a refrigerator for 2 hours.

 

4. What Is The Best Type Of Battery For Me?

 

Imagine your power backup requirement is 4 hours for the same power load.

 

Battery Capacity required = (851*4) / 12 = 284 Ah ~ 300Ah

 

Batteries range from 60 to 200 Ah, so you will need 2 batteries of 150 Ah (connected in series) to provide 300 Ah.

 

A UPS that supports 24 V input is required since two batteries combined create 24 V output.

 

5. What Types Of Batteries Are Available?

 

Lead acid batteries have flat plates or tubular plates (rod-shaped).

 

  1. Flat plate batteries: They are small-sized, have low cycle life, and are well suited to areas with a low power cut.
  2. Tubular Plate batteries: Tubular batteries are available in small and tall containers; they have a long design life and are suitable for a wide range of applications. In UPS battery applications, they are replacing flat plate batteries because of their longer life.

 

In order to achieve long life and low maintenance, plates should be produced with highly pure lead alloys using high pressure casting machines.

 

Other Features To Consider

 

1. What Are Some Other Features You Need To Consider Before Purchasing An UPS?

 

Here are some other important features to keep in mind before buying a UPS:

 

  • Warranty: The longer the warranty, the better the quality. Battery warranties typically range from 12 to 48 months.
  • Float indicators & vent plugs: The batteries are equipped with visible float indicators so that you never forget to top up the water. Gas pressure inside the battery should be regulated by the vent plug.
  • Terminal Protectors: To ensure maximum consumer safety, batteries should come with terminal protectors. This prevents an accidental electric shock.

 

2. Can You Buy A UPS And Battery Online?

 

Power cuts are a common issue in our lives and it is essential to install a UPS battery combo for uninterrupted power. Depending on the brand, the UPS battery combo can be purchased online.

 

Conclusion

 

UPSs are more efficient than other systems. The UPS provides the appliances with uninterrupted electricity without delay or fluctuation.

 

During power outages, the battery is used to store energy and convert AC to DC, and provide power to the UPS.

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