What are the main protection functions of UPS?

UPS uninterruptible power supply is a kind of uninterruptible power supply containing energy storage device, which is mainly used to provide uninterrupted power supply for some equipment with high requirements for power supply stability.

Uninterruptible power supplies are widely used in: mining, aerospace, industry, communications, national defense, hospitals, computer business terminals, network servers, network equipment, data storage equipment, emergency lighting systems, railways, shipping, transportation, power plants, substations, nuclear power plants, firefighting Security alarm systems, wireless communication systems, program-controlled switches, mobile communications, solar energy storage energy conversion equipment, control equipment and its emergency protection systems, personal computers, and other fields.

The protection functions of UPS uninterruptible power supply mainly include:

1. Power failure protection function

In the event of a momentary power failure of the utility grid, the UPS uninterruptible power supply system will immediately convert the DC power of the UPS power battery into AC power to continue to supply power to the load, avoiding the inconvenience and loss caused by the power failure.

2. Stabilizing effect

The mains voltage is easily affected by the distance and quality of the power transmission line. Users closer to the substation will have a higher voltage, and users farther from the substation will have a lower voltage. Too high or too low voltage will affect the quality and service life of the user's equipment, and in severe cases, it will damage the equipment and cause heavy losses to the user. The use of UPS uninterruptible power supply system can provide a stable voltage power supply for user equipment to ensure the normal operation of the equipment and prolong its service life.

3. Surge protection

Generally, UPS uninterruptible power supply systems have a cutting-edge discharge design to absorb surges, so as to avoid the impact of surge problems on the efficiency and life of the equipment, and to provide protection for the equipment.

4. High and low voltage protection

When the mains voltage is high and sometimes low, the voltage stabilizer (AVR) in the UPS power supply keeps the mains voltage in a usable safe range to ensure that the equipment can operate normally. When the high and low voltage exceeds the usable range, the UPS uninterruptible power supply system will start the battery to supply power to ensure the continuous operation of the equipment.

5. Harmonic distortion protection

When power is transmitted to the end of use via transmission and distribution lines, the voltage waveform is distorted, and the fundamental current changes to produce harmonics. Harmonics will affect the use of equipment, and UPS uninterruptible power supplies can provide equipment with stable and high-quality power, effectively improving the operating efficiency and life of the equipment.

6. Stable frequency effect

The frequency is the period of the mains change every second, and 50 Hz is 50 cycles per second. When the mains generator is running, the sudden change in the power consumption of the client will cause the change of the speed to change the frequency of the converted power. The power converted by the UPS power supply can provide a stable frequency to ensure the normal operation of the equipment.

7. Instant protection

The mains power sometimes has voltage surges and sags or instantaneous voltage drops. Such problems will affect the accuracy of the equipment, and in severe cases, it will damage the precision equipment and cause the user to suffer losses. UPS uninterruptible power supply system can provide stable voltage to protect equipment.