New uninterruptible power supplies from Schneider Electric. Free Technical Library News

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New uninterruptible power supplies Schneider Electric

10.03.2015

The IT Business division of Schneider Electric, a global expert in energy management and industrial automation, is updating the BX line of the APC Back-UPS family. The discontinued BX650CI, BX800CI and BX1100CI models will be replaced by Back-UPS BX700UI, BX950UI and BX1400UI line-interactive uninterruptible power supplies, equipped with computer outlets and built-in voltage regulators. These UPSs are more resistant to power outages and differ from their predecessors in the presence of a USB port for communication with a computer.

The BX700UI, BX950UI, and BX1400UI Back-UPS are line-interactive and generate 230V. All units have low battery transfer thresholds and are able to withstand extended mains input voltage drops without switching to battery backup . The total power of the new models is 700VA/390W, 950VA/480W and 1400VA/700W.

According to Schneider Electric, the novelties are able to automatically stabilize the voltage in the range of 140-300 V (BX700UI) and 150-280 V (BX950UI and BX1400UI) to a safe level, which allows the electronics connected to them to operate continuously at low and high voltage in household electrical networks. Thanks to the presence of the RJ-11 connector, it is possible to protect equipment connected to the telephone network, such as an expensive telephone, fax or DSL modem. Monitoring the status of the UPS is easy thanks to the presence of audible alerts and LED indication.

The Back-UPS BX700UI, BX950UI, and BX1400UI connect to a computer using a USB port. Users can download APC PowerChute Personal Edition software for free, which allows you to monitor key UPS parameters, change source settings, and calculate the battery life of connected devices based on battery level. In the event of an extended power outage, APC PowerChute automatically initiates a data save and shutdown procedure for the PC.

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Or fish or bread 08.10.2016

European salmon suffered from water mills in the Middle Ages.

Usually, the disappearance of such an important northern fish as salmon is blamed on the industry, which polluted the crystal-clear waters of mountain rivers and streams. In second place is human greed: population growth and a passion for good nutrition forced us to catch all the fish, and now we are forced to eat trout and salmon from the cage. It turns out there is a different reason. It was established by Dutch ichthyoarchaeologists from Redbud University, led by Rob Landers, who studied archival records of northwestern Europe from the XNUMXth century onwards. These were data on fish stocks, and fishing permits, and prices at fish auctions, and much more.

According to the documents, it turned out that for seven hundred years the salmon catch had never grown, but only decreased. What prevented salmon from breeding long before the invention of the steam engine and capitalist industrialization? Researchers have established that these were water mills: they began to be built throughout Europe around 1000 AD. e.

It is not necessary to think that the salmon perished in the water wheels. This fish jumps beautifully and knows how to overcome obstacles. But the mill required a dam, and upstream a reservoir arose, the pebbles necessary for salmon for spawning were covered with a layer of silt and sand. From this follows a recommendation to modern specialists correcting old mistakes: it is not enough to remove pollutants and industrial facilities from the river, it is also necessary to restore the pebble channel, clearing it of sediments.

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