What are the protection functions of UPS uninterruptible power supply for electrical equipment

by:Power Kingdom     2021-06-10

Power failure protection function

In the event of a momentary power failure in the utility grid, the UPS power system will immediately convert the DC power of the UPS battery into AC power to continue to supply power to the load to avoid power failures. The inconvenience and loss.

Stabilization effect

The mains voltage is easily affected by the distance and quality of the power transmission line, and the voltage of users closer to the substation is higher. The voltage of users farther from the substation will be lower and lower. 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 power system can provide a stable voltage power supply for user equipment to ensure the normal operation of the equipment and prolong its service life.

Surge protection function

Usually, the UPS power system has a cutting-edge discharge design to absorb the surge, so as to avoid the impact of the surge problem on the efficiency and life of the equipment , Provide protection for equipment.

High and low voltage protection

When the mains voltage is high and sometimes low, the voltage regulator (AVR) in the UP power supply keeps the mains voltage at The usable safety range ensures that the equipment can operate normally. When the high and low voltage exceeds the usable range, the UPS power system will start the battery to supply power to ensure the continuous operation of the equipment.

Harmonic distortion protection effect

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 power supplies can provide equipment with stable and high-quality power, effectively improving the operating efficiency and life of the equipment.

Stable frequency effect

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

Instantaneous protection effect

The utility power sometimes has voltage surges and sags or instantaneous voltage drops. Such problems will affect the accuracy of the equipment and serious At times, the precision equipment will be damaged and the user will suffer losses. The UPS system can provide a stable voltage to protect the equipment.

The effect of suppressing transverse mode and common mode noise

Transverse mode noise is generated between the live line and the neutral line; common mode noise is generated in the live line, Between neutral and ground. Invisible power problems are hard to prevent and endanger instruments and equipment at all times, causing losses to users. UPS power supply escorts the instrument and data, ensures the normal operation of the equipment and prolongs the service life of the equipment.

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