Today, ZIRCON will be introduced to know How many types of uninterruptible power supplies are there?
UPS types can be divided into 3 types as follows
1. Offline UPS or Standby UPS
Normal electrical conditions. Load equipment will receive electrical energy directly from the main electricity distribution system. At the same time, The charger will charge the battery with But when the power goes out The battery will supply electrical power with an inverter to convert electricity and supply electrical equipment. By using a switch (Transfer Switch) for choosing an electrical power source between the electrical system (Main) or inverter (Inverter). In the case of normal electricity or abnormal electricity occurs in a very short time until Transfer switch, unable to switch power supply The electrical power supplied to the electrical equipment (Load) comes directly from the electrical power distribution system. Therefore, if the electrical quality from the electrical power distribution system is not good (such as power failure, power outage, surge, or there is noise, etc.), the electrical equipment will Will also receive poor quality electrical power as this type of UPS is designed to protect only in the event of a power failure Can not prevent the problem of fluctuating voltage and noise, Therefore, it is cheaper than other types of UPS and is not suitable for use in certain areas such as locations near electricity sources such as dams, power stations, and sub-stations, as well as not suitable for use in Thailand. Due to frequent power failure
Advantages and disadvantages of this system UPS
Advantages: cheap, small size, lightweight, simple design, not complicated, can prevent only the power failure And the service life of the battery and UPS is short.
Disadvantages: Unable to fix electrical problems such as power failure and overload, and if there is an electrical fault entering the UPS, it will immediately pass to Load causing damage to Load.
2. Line Interactive UPS with Stabilizer or Online Protection UPS
Is very similar to the Offline UPS, but with the addition of an Automatic Voltage Stabilizer (AVR) to prevent electrical problems, allowing the UPS to not have to provide backup power from the battery every time the power goes out or While not too much power, while in normal electrical conditions, electrical equipment (Load) will receive electrical power from the electrical power system (Main) from the electricity through this automatic voltage stabilizer (Stabilizer / AVR) which will have Keep the voltage stable. Prevent the problem of electric shock, overcurrent, and surge, etc. At the same time, the charger will charge the electricity stored in the battery. When the power goes out, the power will be supplied to the inverter to convert the electricity and load to the electrical equipment by using the transfer switch to select the power source between the automatic voltage regulation system ( Stabilizer / AVR) or inverter which can be considered as the most suitable UPS for use in Thailand. Affordable price and the quality of electricity is within acceptable criteria.
Advantages and disadvantages of UPS between UPS systems
Advantages: with an automatic voltage stabilizer (Stabilizer / AVR) to prevent problems of overpowering and power failure. And the price is suitable for general use. Compact size, lightweight
Disadvantages: not able to fix the frequency error And is not suitable for devices that are very sensitive to the quality of electricity such as medical devices/machinery
3. True On-line UPS
Is the highest potential UPS Can prevent electrical problems in all cases, whether it is a power outage, a power failure, overload or any interference And providing good electrical quality, that is to say, the electric charge (Charger / Rectifier) and the inverter will work all the time. Regardless of the electrical quality Can supply electrical power to electrical equipment (Load) as usual, except in the case of inverter that is broken, so it will distribute electrical energy from the electricity supply system (Main) from the electricity to the electrical equipment (But should not continue to use if the inverter {Inverter} is broken). As a result, this type of UPS is more expensive than other types of UPS.
Advantages and disadvantages of UPS between UPS systems
Advantages: able to solve all electrical problems And with high reliability, electrical equipment (Load) will receive electrical energy continuously. Without interruption, able to produce UPS of all sizes and can inspect the UPS without having to shut down the equipment
Disadvantages: cumbersome design And very complex, large and heavy And has a high price
