Overvoltage in the apartment. Surge protection appliances on the street was of Clinical surge in supply. Unfortunately, under the influence of voltage equipment got my client. After raising voltage from 220 volts to 380 out of order microwave, washing machine, stereo, radio, telephone. And, perhaps, suffered more of the equipment of other tenants. The first thing I said to my client: "After the repair install equipment in my apartment surge protection! " Techies do not judge strictly this article! I will try to present understandable terms. Causes Surge Lightning, getting close to the substations, cables, causes a spike in voltage. And in our network can beat a couple of thousand volts of seconds.
Time is sometimes not in our favor. Metal, every year, loses its original properties. And the slightest pressure on the wire can cause it gap. And here, or we have not worked as an electrician (dropped out the phase wire) or high voltage by 10-20% (the neutral wire was dropped). But if the wiring was placed is illiterate, we sometimes have fallen wires fall on others, and we have to almost 380 outlets did not last long – up to seconds (if the wires are not welded together). The consequences of over-voltage from lightning can burn anything! But these cases are very rare.
Damage depends on how close the lightning was from electronics (and other). Neutral fallen away – this increase in tension in the way of breaking your outlet, which is connected to your equipment. Consumer electronics can withstand up to 250 (in the passport for each electronic assistant written more precisely). Next – not the right work equipment which is connected to the mains, and its failure (low voltage network is also a negative effect on some equipment). If you are not home, and not like a microwave oven works, but it can burn if it is connected to the network. In this case, the oven still works, or rather its electronics, which controls the heating elements. And now it just shows the time. The same is true to stiralkam, muzykalkam, TV, radio phones, monitors, etc. etc., which are in standby mode. Fuses of each unit can not fully protect against breakage. Burned in the main power supply electronics. Ways to protect against overvoltage most optimal option – is to install on your plate the two devices. This DPN 250 (260) and RCD (or a diff. Machine). Pros – fast response time of protection (0.01-0.02s), ease of installation and portability, cheapness. On the downside can be attributed – frequent forgeries if zalipnut contacts in the RCD, the overvoltage DPN can burn or even catch fire! That is, the RCD should be checked occasionally by pressing the test (Test). Speaking candidly Michael Chabon told us the story. There are other devices surge protection. They have different characteristics, dimensions, availability. In addition, no guarantee that your equipment does not deteriorate over time to disable protection, will not! Just under a surge technique is less time!