![]() ![]() If you don’t see the clocks, your browser has the javascript-function disabled. Now, for fun let’s make a time comparison. If the outage is longer, the RTC is backed by a battery. In case of power-outage, the meter takes the required RTC power-supply first from the internal super-capacitor. So, a regular synchronization is reasonable for high-end energy meters. According to IEC 62054-21 the meter RTC has an allowed tolerance of max. In addition, an AMI-system can synchronize the time for all meters. LPC2148RTC can be clocked by a separate 32.768 KHz. Means, without AMI system you have one year time to walk around and update all your 5 million meters in the field with the new passive calendar. Real Time Clock (RTC) is a time counter that counts real time continuously. It’s the active calendar for the actual year, and a passive calendar for the next year. Typically, an energy meter with calendar function is holding two calendars. ![]() Christmas works without AMI, but think about Lunar New Year or the End of Ramadan. ![]() You can include special days or periods for special tariff rates. Together with an AMI system, even more functions can be enabled. Including year, month, day, day of the week, hour, minute, second, leap year, daylight-saving A real-time clock (RTC) is a computer clock, usually in the form of an integrated circuit that is solely built for keeping time. This is the SparkFun Real Time Clock (RTC) Module, this little breakout that uses the DS1307 to keep track of the current year, month, day as well as. Schedule conference calls, webinars & online meetings, plan travel and track flight arrival time across time. What are the tasks for a Real Time Clock? Effortless time conversion and world time. Together with electronic compensation for accuracy and temperature change, we are better than the by IEC 62054-21 required values for time switches. Return the clkid of the thread-specific CPU-time clock for the specified threadid. In the four-quadrant simulation you can adapt different phase angles to get a better idea about the phase shift.įinally the phase shift is expressed as power factor.įor CLOU meters the chip-internal oscillator frequency is with 12.288 MHz about 5 times higher than needed for energy meters class 0.2.įor a real time clock (RTC) CLOU energy meters are operating with an external quartz crystal with a frequency of 32.768 kHz. The precision of the various real-time functions may be less than. ![]()
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