Uninterruptible power supplies.

For the power supply of the network of an apartment or a private house, mainly 220V models are used. Based on the fact that they filter network noise and high-voltage surges, even inexpensive uninterruptible power supplies can be used for sensitive household electrical appliances (plasma TVs, stereos). Have their own advantages over other protection methods:

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At the same time, they are not without disadvantages:

Relatively long switching (from 6 to 10 ms); Lack of parameter adjustment; Approximated sinusoid (therefore, not suitable for some types of blood pressure).

Line-Interactive Uninterruptible Power Supply (UPS) is best suited for refrigerators (pure sine wave) because additionally equipped with an automatic voltage regulator.

A household UPS is selected according to the following technical parameters:

Output power, taking into account starting currents. As a rule, for this, separate outlets are mounted, designed for the most necessary electronics and household appliances, and lighting can be additionally supplied to them. For example, for a house with a consumption of up to 20-30 kW * h per day, a 2-kilowatt model is sufficient, the main thing is that the maximum load does not exceed this limit; Duration of transfer to battery (measured in milliseconds). For some devices, instantaneous switching is important, for this there is a separate category of uninterruptible uninterruptible devices that constantly pass electricity through themselves.

The output current is mainly 220V, but there are also 12-volt ones for CCTV cameras. For three-phase devices, 220V uninterruptible power supplies are required, connected according to a phase-synchronized scheme. Operating time (depends on battery capacity and network load).

It should be sufficient to connect the spare line. For example, if an electric generator is installed, an uninterruptible power supply is enough for the house for up to 5-7 minutes, which is quite enough to reach the required speed after the start; Input voltage range – in case of frequent power outages, it is better to select a higher value.

Which one is better to put in the office.

In offices, a PC UPS with 220V outlets is often used to connect computers and other office equipment. UPS of type (off-line) are used for workstations of entry-level local networks, as they are cheap and have high efficiency.

UPS for the computer can choose either line-interactive or double conversion, the so-called

There may be several connection options:

optimal – separately for each workplace; cheap – one powerful for several working areas.

It is important to know when choosing a UPS for boiler and heating pump.

For power supply of gas boilers, it is better to choose