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How many knowledge do you know about the input and output voltage of UPS power supply? The input voltage range of UPS power supply refers to the range of allowable changes in mains voltage, which ensures that the UPS does not switch to the mains voltage range of battery inverter power supply. The larger the range, the better the adaptability of UPS. The input voltage range of a typical UPS should be between 160V and 270V or wider. When the mains power is below 160 or above 260, it does not work in mains mode and switches to battery mode.

Knowledge of input and output voltage of UPS power supply

When the input voltage of UPS exceeds or falls below the rated range, it will switch to battery power, and there will be an alarm sound. It is recommended that you choose a UPS with a larger input voltage range when purchasing.

1. The output voltage value of UPS power supply is 220V for single input single output and three input single output UPS power supplies, while 380V for three input three output UPS power supplies, using three-phase three wire and three-phase four wire systems for output.

2. The adjustable range of output voltage is large, and the output voltage of a medium capacity UPS power supply can be adjusted by ± 5% above the minimum rated value of the UPS. A small capacity single-phase UPS can be adjusted with a dial, and the output voltage range can be adjusted between 208/220/230/240V.

3. The change in output voltage caused by changes in input voltage, load, and temperature during normal and stable operation of UPS power supply. The value of medium to large capacity UPS is ± 1%, while the value of medium to small capacity UPS is ± 2% and ± 3%.

4. The fluctuation value of voltage when UPS suddenly increases or decreases full load at 100%, or when the mains bypass power supply channel and inverter power supply channel change. The voltage fluctuation range of medium and large capacity UPS power supplies should be less than ± 5%, and the voltage range of small capacity UPS power supplies should be less than ± 6%~± 8%.

5. The static stability of output voltage refers to the magnitude of output voltage changes caused by changes in input voltage, load, and temperature during stable operation of UPS. The typical value for medium and large capacity UPS is ± 1%, while the typical value for medium and small capacity UPS is ± 2% or ± 3%.

6. The dynamic response recovery time of output voltage refers to the time required for UPS output voltage to recover to the voltage stabilization accuracy range when the input voltage is rated, the output is a linear load, and the output current is zero to rated current or suddenly changes from rated current to zero. Most UPS should be between 10-30ms.

7. Output voltage waveform distortion, due to different purposes, the output voltage may not necessarily be a sine wave, but can also be a square wave or trapezoidal wave. The output waveform of backup UPS is generally square wave, while the output waveform of online UPS is generally sine wave.

UPS power supply can provide maintenance for both high and low voltage. The input voltage range of UPS is wide, and inputting voltage within the rated range can ensure the output of UPS at the rated time.

In fact, all UPS power inputs are the same, one is AC input for mains power and the other is DC input for battery power. The input of mains power is the output of mains power after rectification and inversion; The battery input inverter converts DC power into AC 220V output. Of course, if you ask about the output, there is another way for UPS, which is bypass output. This means that when the UPS malfunctions or a large UPS needs repair or maintenance, the UPS power supply will automatically or manually switch to bypass output, without affecting the operation of the load.

What is the output voltage of UPS power supply in volts?

A low-power UPS power supply with a output voltage of 0.5KVA-20KVA generally has an output voltage of 220V (some brands, such as APC, have an output voltage of 230V), while those above 20KVA have an output voltage of 380V (except for some models, there are three in one out 30KVA and three in one out 40KVA, which are less commonly used)

What is the input voltage of UPS power supply in V?

The input range of UPS power supply is relatively wide, with a normal input voltage range of 1-3KVA ranging from 115V-300V, and an input voltage range of 6-10KVA ranging from 120-275V, which is a common 220V input and output voltage. However, its voltage stabilization range is relatively large. Power sources such as 10KVA and 20KVA have 380V inputs, while high-power UPS power sources above 30KVA have 380V inputs.

The above is the knowledge of input and output voltage of UPS power supply. Input voltage can explain what power supply system UPS products are suitable for. In today's industry application, the selection of UPS is far from so simple. It needs to consider the impact of both the input and output interfaces of UPS. The impact of UPS on the power grid (or backup generator) and the impact of the load it carries on UPS.

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