User manual for poly-phase meter
31
15 RTC
⚫ Supports calendar, time and leap year automatic when changing function.
⚫ The accuracy is less than 0.5s/day at 23℃, totally comply with IEC 62054-21
⚫ Content of clock and range
➢ year (2000~2099)
➢ month (01~12)
➢ day (01~31)
➢ week (01~07) from Monday to Sunday
➢ hour (00~23)
➢ minute (00~59)
➢ second (00~59)
It is not suggested to synchronize clock around 0:00 o’clock to avoid the
repetition or missing of frozen data.
15.1 DST
DST (Daylight Saving Time): DST is a system which regulates the local time for
energy conservation the unified time is called “DST”. Generally, during the summer
time, people will set the clock one hour ahead, in order to make people get up and go
to bed earlier, reduce the amount of lighting, and make full use of light resources and
save lighting electricity.
15.1.1 DST configurable
Once set DST and activated, it keeps working until reset the program. Available
to set start time in any month any week any day and end time can be set in the same
way. For example start on Monday in the last week of March and end on Friday in
second week of September. Or set to start on 10
th
March, end on 8
th
September
directly.
After entering DST, meter’s time will be adjusted in 1 hour ahead. When exiting
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