How To Purchase A UPS Power System?

News 2023年4月18日 39

UPS as a protected power supply, its performance parameters are of great significance, is one of the factors we consider when choosing. A wide input range of mains voltage indicates strong mains power (reducing battery discharge). The output voltage and frequency range is small, indicating that the power regulation ability is strong, the output is stable. Waveform distortion rate is used to measure the stability of the output voltage waveform, and voltage stability represents the stability of the output voltage when the UPS suddenly increases from zero load to full load.

In addition, UPS efficiency, power factor, conversion time, etc. Are important parameters to characterize the UPS performance, determine the load protection ability and utility utilization. The better the performance, the better the protection. In general, UPS systems fall into three categories: standby (or offline), online interactive, and dual conversion (online).

Spare UPS

This is a simple and low-cost form of power protection. The load is powered by the mains. In the event of a power outage, the power supply system switches to the UPS and its fully charged battery as backup power. For mission-critical environments such as data centers, offline UPS is not an appropriate power protection method.

Online interactive UPS

This type is similar to off-line UPS, but with the added protection of an automatic voltage regulator or AVS. This greatly reduces the risk of any voltage unpredictability. Interactive UPS units are commonly used in telephone exchanges, servers, and small electrical applications.

On-line UPS

Also known as on-line dual conversion UPS. In this type of power supply protection system, the load is not directly connected to the power supply. The power goes into the UPS and passes through a rectifier, which converts alternating current (AC) to direct current (DC). The UPS inverter then converts it back to alternating current, which then supplies power to the actual load. Unlike the two methods mentioned above, the online power protection system does not interrupt the power supply if there is a loss of power or interference, even for a few milliseconds, and immediately switches to the backup power supply.

Even online UPS

Different from the traditional double frequency conversion system (power frequency machine), high frequency double frequency conversion system (high frequency machine), three port system. Local environmental conditions should be considered, such as voltage stability, outage frequency and time, whether generators need to be configured and the importance of load. In some parts of the country, the voltage deviation is large and unstable, or generators need to be plugged in, which requires a careful understanding of the applicability of the system.

In general, dual frequency (power frequency or high frequency) online UPS has a wide range of utility applications, while three-port system online UPS and standby or online interactive UPS are more affected by power supply quality. The average home or office PC is cheaper to use a backup or online interactive UPS if the power supply is good in a large city. On-line UPS(especially CPU controlled intelligent UPS) using dual-frequency conversion systems represent the trend of future technology development and are very mature in the range below 3kVA.

If the technology, device, process is guaranteed, its stability may be higher than the power frequency machine. However, for UPS above 5kVA, due to the reasons of device technology, its stability is still relatively hard. It should be said that online is a relatively complete type, is a product of UPS, applicable to a wide range of environmental conditions.

However, the market role of standby, quasi-online, online interactive UPS cannot be denied. After all, online UPS costs more and has more options if it is located in an area with good power supply.

Caloong adopts advanced production technology and strict quality control system to ensure stable battery quality and reliable performance. Voltage, capacity and seal are 100% checked on line.