A few questions about UPS for UPS

apc and Shante at its best.

1kva is enough and the bigger the better.

The first thing you should pay attention to is the brand of UPS you choose. A good brand, the battery can be used for more than three years, otherwise it will bring you all kinds of inexplicable difficulties in the process of use (such as: false standard power; The response speed is not at all, and the power suddenly fails to switch in time, resulting in server errors.

The battery won't be charged, and so on).

If it is a regular brand, 1kw of power is enough for your single server. Because the power of the power supply is 670W, but the power you actually use will definitely not reach it. (It is only possible to get close to 670W if working at full capacity).

Comes with a better UPS brand for personal use: Shante. (Note that Shante is Shante, not what is Shante in the United States, Shante in the South China Sea).

There is a UPS purchase guide on it. Hope it helps.

Get it within 2000 yuan, and you are most afraid of buying fakes! Find a professional company to buy, the seller of the computer city is unreliable, the value of the product itself is meaningless, the key is the safety of electricity within a few years, the difference between good and bad is only time to verify, what others say has no meaning.

It is not advisable for UPS to operate in the state of excessive light load, because excessive light load of UPS may cause deep discharge of the battery during power failure, which will significantly reduce the service life of the battery. Instead, it causes premature damage to the UPS battery.

The no-load power really can't be calculated, and I don't know if the 150W you said refers to the power consumption, and it should not reach 150W in the case of no load. You can refer to the library.

1) The relationship between UPS and battery can only provide power to UPS when the mains is abnormal or the mains is disconnected, so UPS no-load or low-load has little to do with the battery. Today's batteries are automatically charged and are rarely used, but they need to be manually discharged once every six months.

2) The power factor refers to the ratio of the total power of the UPS to the useful power, so the capacity unit of the UPS is KVA not W. So the maximum power of UPS is the capacity (?) kva)* power factor.

I really haven't seen it on the market now!! Some of them are bragging!! Power consumption, you can ask the manufacturer!

Or measure it yourself!!

1.There's nothing bad about it, and there's nothing bad about the battery.

It is the active power (P), the general UPS capacity unit is KVA, that is, the apparent power (S), the power factor is to say: P=, as for the power consumed by the no-load UPS, it needs to be actually measured, and it has nothing to do with this.

UPS host and battery can be matched separately, 12V maintenance-free lead-acid battery fixed only as a group, according to your backup time requirements to buy the corresponding capacity and number of batteries.

For example, the output power factor of 30kva UPS is, which can only bring a load of 27kw, and then consider the redundancy and impact situation, generally consider the double capacity. You want 30kw, so count it like this: 30 (; Of course, this is just a reference, and the possible output power factor is 30 (;

If your load has a large starting current, then consider a larger capacity UPS to prevent overload and shock.