Difference type of battery for UPS

In modern or substation applications principally three sorts of batteries are utilized in particular:

1. Vented/Flooded Lead Acid batteries

2. Sealed support free batteries/Valve Regulated Lead Acid

3. Nickel Cadmium (Ni-album) batteries

For UPS applications batteries are the most prevalent and henceforth are broadly utilized. Consequently, in this enumerating, basically underline has been put on these kind of batteries.

Vented/Flooded Lead Acid Batteries 

There are two sorts for vented or overflowed lead corrosive batteries in particular tubular and Plante. The contrast between the two is the development. For tubular battery typical life is 8-10 years. The Plante battery is both mechanically and electrically more strong. The ordinary life for Plante batteries is 15-20 years. Since this sort of battery produces destructive exhaust while charging and on the grounds that the sulfuric corrosive electrolyte evaporates to some degree, these batteries must be utilized as a part of an exceptional room, which is very much ventilated to the outside and avoided sensitive electronic supplies.

It needs isolate room/racks with corrosive confirmation tiles for establishment. As a result of dissipation, it needs consistent support to check particular gravity, to include water and corrosive. These batteries can withstand high temperature, voltage, and profound release with least harm to itself. A notice ought to be displayed in the battery room precluding smoking and utilization of bare blazes. These batteries can't be transported in charged condition and in this manner require charging at site.

Run of the mill beginning charging of the battery will take around 55 to 90 hours. Ostensible cell voltage is 2V/cell. The charger for this battery ought to have the capacity to give the primary charge at 2.6 to 2.7 V/cell.

These sorts of batteries are ordinarily utilized for UPS Systems of high evaluated limit, regularly drew in for plant application, wherein upkeep and space isn't generally an issue.



Fixed Maintenance Free batteries (VRLA) 

These are otherwise called Valve Regulated Lead Acid (VRLA) batteries. These batteries are the most prevalent for use with UPS frameworks for PC or business application. Being fixed, these batteries don't radiate any vapor and subsequently can be exceptionally very much introduced by electronic hardware. These batteries likewise can be housed in a nearby fenced in area if vital. These batteries are additionally support free and keep away from any bothers of checking particular gravity, including water or corrosive, and so on.

These batteries have a generally lesser existence of approx. 3-5 years. The future regularly relies upon the quantity of charge/release cycle experienced by the batteries and the surrounding temperature in which the batteries are utilized. These batteries are fundamentally the most prevalent for business applications because of "Introduce and overlook" approach.





Nickel Cadmium Batteries (Ni-Cd) 

Ni-compact disc batteries do emanate hydrogen and oxygen gas, results of electrolysis, yet there are no destructive gasses as lead corrosive batteries, so these can be introduced close electronic gear. Water utilization is generally low thus in this way support is low. Ordinary administration life is 20-25 years. These are most costly of the different sorts of batteries beforehand talked about. Beginning expense might be roughly three times that of lead corrosive battery relying on their AH limit.

These batteries don't encounter the serious shortening of life when worked at hoisted temperatures and perform preferred at low temperatures over do the lead corrosive batteries. Ostensible cell voltage is 1.2 V/cell. The battery chargers and inverters must be intended to work with low end cell cutoff voltages and higher energizing voltages required for such batteries.

These batteries once in a while request help charging and ordinarily discover their applications wherein UPSs bolster basic gear in dangerous condition, for example, substance, compost, bond industry.

What does UPS redundant mean

HOW To calculation back up time for UPS

UPS Run Time/Battery Backup Time Calculator

Calculate the estimated run time or battery backup time of any uninterruptible power supply (UPS) using the device load (in watts), power factor, number of batteries, battery voltage.

This is description for cal. sheet.
1. kVa of UPS  ( calculation from load consumption)
2. Power factor of load (nominal assume 0.8 )
3. Inverter efficiency of ups (difference from each ups , nominal 0.94 )
4. end voltage of battery ( you can adjust , nominal 1.75-1.8)
5. No. of cells of battery ( depend dc bus of UPS )
6. Floating charge of battery ( depend on manual of battery)

If you fill all data in excel file you can see minimum require of current or watt of inverter and then you can choose battery Ah from discharge table of battery .

Example battery discharge table .

What is power supply

UPS is the abbreviation of the word. "Uninterruptible Power Supply" or "UPS" if translated directly means the source.
Continuous power supply It can be said that UPS is an electrical device that can continuously supply electricity to electronics. Even in the event of a power failure or voltage fluctuation, the UPS will safely adjust its voltage level to electrical and electronic equipment.
UPS is primarily responsible for preventing damage that can occur to electrical equipment and electronics. (Especially the computer).
Electrical equipment such as power outlets, power outages, overloads and overloads, and the obligation to supply battery backup power to electrical or electronic equipment. When the power problem.

Components and operating principles of uninterruptible (UPS)

The main components of the UPS are:
1. A charger or AC to DC converter (Rectifier) ​​serves to receive AC power from
DC power supply, then the charge stored in the battery.
2. An inverter supplies the DC power from the AC inverter to the DC or the battery.
And converted to AC for use with electrical equipment and electronics.
3. Battery (Battery) is used to store electrical power backup in case of electrical problems. It will supply DC power to
Inverter can not receive AC power from the power supply.
UPS operating principle includes:
In general, when the UPS receives power No matter what the power quality will be, it will be able to supply electricity to the power supply.
The sky is normal. It also supplies the backup power stored in the battery to the electrical equipment. The principle of the UPS is to use the method of converting electricity from AC (AC) to DC (DC) and then back up the battery. In the event of an electrical problem (such as a power failure or unusual electrical quality, etc.), the power supply can not be used. The UPS will convert the DC power from the battery into AC. Supply electricity to normal electrical equipment.


Types of UPS can be divided into 3 types.

1. UPS or UPS Standby


Electrical power (Load) will be the power from the main power from the electricity. Meanwhile Charger
Charger will charge the battery. But the power failure. The battery supplies power to the inverter, converting it to electricity. By using a tranfer switch to select the power source between the main power supply or the inverter.
Normal or abnormal electrical currents occur in very short periods of time. Switching (Tranfer Switch) switch power supply. The power supplied to the power supply.
If the power quality of a power supply is poor (eg power failure, power failure, surge, or noise), the electrical equipment will receive no electrical power. Also, this type of UPS is designed to protect against power failure only. Can not prevent voltages and interference problems. It is cheaper than other types of UPS and is not suitable for use in some areas such as places near electricity sources such as dams, power stations, and power substations, etc. Also not suitable for use in Thailand. Because of the frequent fire.
Advantages and disadvantages of this UPS system.
Advantages: cheap, small, lightweight, easy to design, simple to prevent power outages alone. And short battery life and UPS.
Disadvantages: Unable to correct electrical problems such as power failure and overload, and when an electrical fault goes through, the UPS will pass to the load immediately, causing the load to fail.



2. Interactive UPS with Stabilizer or Online Protection UPS


The picture shows that it is very similar to Offline UPS, but the increase is the automatic voltage stabilizer (AVR) to prevent problems.
The UPS allows the UPS to save power from the battery at any time of low power or overload. In normal electrical conditions, the load is supplied by the mains. This voltage stabilizer (AVR), which will maintain a constant voltage. Prevent the power failure, overload and surge, and so on. Charger will charge the battery in the battery. When the power goes out, the power is supplied to the inverter, converted to a load, using the transfer switch to select the power supply between the automatic voltage regulator ( Stabilizer / AVR) or Inverter, which is the most suitable UPS in Thailand. Affordable and electrical quality is acceptable.
Advantages and disadvantages of this UPS system.
Advantages: Automatic voltage stabilizer (AVR) to prevent overload and power failure. And the price is suitable for general use, compact size, light weight.
Cons: Can not solve the frequency error. And not suitable for devices that are sensitive to the quality of electrical.



3. True On-line UPS

From the picture shows the True On-line UPS system is the most potent UPS. It can prevent any electrical problems such as power outage, fire, overload.
Or any interference. And the quality of electricity is good. (Charger / Rectifier) ​​and inverter will work all the time. No matter what the power quality is. In case of inverter, it can supply electricity from the main power system to the electrical equipment. (But do not continue to use the inverter {inverter} waste), so this type of UPS is higher than other types of UPS.
Advantages and disadvantages of this UPS system.
Advantages: Can solve all electrical problems. And with high reliability, the electrical equipment (Load) will continue to receive electricity. Uninterrupted, UPS can be produced anywhere.
Size and can check the UPS without closing the device (Load)
Disadvantages: Tough design And very complex, large and very heavy. And high prices.