By efficiency. If the power is 1000W and the efficiency is 90%, then the power consumption at full load (1000*10%) is 100W/hour.
And 。。。。。
The working principle of voltage stabilizer protector is: it can automatically stabilize the fluctuating voltage from 160V to 250V between 210V and 225V, and the ultra-low-voltage type can automatically adjust the low voltage from 110V to 220V, and the voltage stabilizers are equipped with the over-voltage protection function, which can be automatically adjusted downward when the general voltage rises to 260V, and cut off the power supply output automatically when it's higher than 260V to protect the electrical appliances from burning out. Electrical appliances do not burn, in addition to its delay function, in the power outage after a sudden call, a delay of 5 to 10 minutes before starting, so as to play a role in the protection of the compressor, because the refrigerator and air conditioning compressor in the work of a sudden power outage, the local pressure of the pipeline within the machine is very large, when the immediate call when the compressor is difficult to start, it is very easy to overheat and burn, when the start after 5-10 minutes, the pressure inside the machine is gradually diffuse Evened out, thus playing a role in protecting the compressor. With the increasing number of household appliances, utility tensions, especially air conditioning, small 800W or more, large 1500W, 2000W or more is also very common, the peak of the power grid voltage is low to 150V below the phenomenon occurs from time to time, when you choose a good quality voltage regulator, home appliances can be restored to normal operation, why not do it?
The following points should be noted when selecting a voltage regulator:
1. If you want to use for a refrigerator and a TV, then 1000W is enough, if you want to take the air conditioning, because the air conditioning instantaneous start-up current than the normal work of about three times, that is, assuming that your air conditioning for 900W, then 900W × 3 = 2700W, then you have to choose at least 3000W voltage regulator, to let it have enough margin, that is, people often say, rather let it big horse-drawn car, not let it not enough.
2. Electric heaters try to avoid the use of voltage regulators. Such as electric stoves, electric heaters, hairdryers, electric irons and so on, because the electric heater is not very sensitive to voltage fluctuations, there is no need to consume a few kilowatts of voltage regulator for their enjoyment, because the greater the power of the regulator the higher the price. If it is necessary to install the voltage regulator to the residential bus, then you should choose as much power as possible, it is best to single out a set of electric heater outlets for electric heaters to use.
3. The appearance of the old-style voltage regulator are square or rectangular, inside the square autotransformer, by several groups of transistors and capacitive elements to form a voltage sampling circuit to control the transformer step-up or step-down, this old product in the voltage sampling is not ideal, in addition to the majority of the overload protection is to rely on the fuse to complete this belongs to the elimination of the product should not be selected. Most of the new regulator wall-mounted appearance style, because the use of toroidal transformer inside greatly reduces the volume, and the instantaneous overload capacity greatly improved in the voltage sampling CMOS integrated circuits, so that the stability of the regulated output has improved significantly, the selection of overload protection overload trip switch, eliminating the need to replace the trouble of the fuse
.