Voltage fluctuations in the household electrical network: what does it threaten
According to statistics, autumn 2022 of the year, when was the peak of shelling of energy infrastructure, the number of calls from the population to repair shops has doubled. Most often, heating boilers failed, washing machines, refrigerators, TVs and boilers.
What happens to the equipment when the electricity is turned off / on abruptly
Shutdown is not so scary, like a sudden turn on: in such cases, a pulsed voltage jump occurs, and automation does not always respond to such cases. If instead of the prescribed 220 In the network is briefly served 300 AT, high probability, that all household appliances connected to the sockets will burn.
It happens, that an apartment building or a separate entrance has protective equipment (eg, UZIP or SN), in such cases, it manages to operate and stabilize the output current indicators.
What equipment is at risk?
There are varieties of household appliances, powered by alternating current 220 AT, but having an electronic unit, which needs constant power to feed. A good example is a washing machine.. When the voltage drops in the network, the current, Ohm's law, growing, what can cause the failure of a sensitive microprocessor. Dislikes lows and motor.
Increasing the rating threatens to damage the TV, especially when 250 In or more (it is for this maximum value that the power supplies of modern TVs are designed).
For classic incandescent lamps, this voltage also threatens to burn out the filament., housekeepers will flicker, LED bulbs may not light up at all.. at 280 The power tool will run at higher speeds, which threatens it with failure or accelerated wear of components.
Is it possible to independently determine the moment of a power surge?
Without voltage relay - only by indirect signs:
- as the voltage decreases, the brightness of the light decreases;
- in a running washing machine, the speed of rotation of the drum is noticeably reduced, what can be heard;
- with a significant deviation (below 180 AT) induction hob won't work.
The signs of an increase in voltage in the network are mentioned above..
Are there household appliances, which is not afraid of voltage drops?
Basically no.. To endure significant jumps without consequences, appropriate equipment is required, operating on the principle of a contractor, i.e. with the possibility of switching on delay. In expensive commercial equipment, such equipment is found, in everyday life - almost never.
The only way to protect against such troubles is to use voltage regulators., which, depending on the power, can protect individual devices or the entire apartment. Поэтому рекомендуется до зимнего сезона обеспечить защитой свою технику и приобрести «стабилизаторы напряжения в Киеве», which are sold in the popular Internet market Allo.ua. Sometimes the price of repairing a gas boiler or washing machine can reach half the cost of the equipment itself ...
