E-Mon E-PS-S-HV-RTU - Manual (Page 83)

Chapter 5 Configuring the PowerSmart Socket PQM General Meter Setup
PowerSmart Socket Power Quality Meter 83
Display Label Parameter Options Default Description
Daylight Daylight saving
time (DST) Disabled
Enabled
Scheduled
Disabled Disabled: the RTC operates in
standard time only.
Enabled: the time is automatically
updated at the predefined fixed
DST switch dates.
Scheduled: the time is
automatically updated at the
calendar scheduled DST switch
dates.
Start Month DST Start Month January-
December March The month when DST begins.
Start Week DST Start Week First, Second,
Third, Fourth,
Last Second The week when DST begins.
Start Day DST Start Day Sunday-
Saturday Sunday The day when DST begins.
Start Hour DST Start Hour 1-6 2 The hour when DST begins.
End Month DST End Month January-
December November The month when DST ends.
End Week DST End Week First, Second,
Third, Fourth,
Last First The week when DST ends.
End Day DST End Day Sunday-
Saturday Sunday The day when DST ends.
End Hour DST End Hour 1-6 2 The hour when DST ends.
Date Order Date Order MM/DD/YY
DD/MM/YY
YY/MM/DD
MM/DD/YY The display date order
Clock Sync Time
synchronization
input None
IRIG-B
SNTP
DI1…DI10 1PPM
DI1…DI2 1PPS
None The external port receiving the time
synchronization signal
Daylight Saving Time
By default, the daylight saving time option is disabled in the
PowerSmart Socket PQM.
When the DST option is enabled, the meter automatically
adjusts the clock at the predefined start/end time when
daylight savings time begins/ends.
When the DST option is set to Scheduled mode, the only DST
start/end hours are used, while the DST switch dates are
taken from the TOU calendar (see
Configuring the Season
Tariff and DST Schedule ). If the DST switch dates are not
found in the calendar for the present year, the meter will use
the dates you defined in your Local Settings.
When the daylight savings option is disabled, the device clock
should be manually adjusted for daylight saving time.
Time Synchronization Sources
The PowerSmart Socket PQM can synchronize its clock with a
remote SNTP server via the Internet, or receive the time
synchronization signal either from a GPS clock with an IRIG-B
time-code output, or from an external device providing
second-aligned (1PPS) or minute-aligned (1PPM) pulses.