Satec expertmeter EM720, Руководство по эксплуатации

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Chapter 3 Using Front Display Display Operations
32 EM720 Power Quality and Revenue Meter
Use a short press on the SELECT/ENTER button to scroll
through displays. Use a short press on the SCROLL button to
scroll through the pages.
Status Indicators
Graphical icons at right give immediate meter status
indication and show the present tariff rate.
Tariff Rate Indicator
The tariff rate indicator (T1 through T8) is only shown on the
billing data displays. It indicates the currently active tariff
rate. Whenever there is an important diagnostic message,
the tariff rate indicator alternates with a blinking diagnostic
indicator (see below).
Diagnostic Indicators
The diagnostic indicators listed in the following table are
displayed as blinking icons. If there are a number of
diagnostic events, a higher priority event is indicated first.
Indicator Icon Event
Priority
Description
High Low lithium battery indicator with auto-reset.
Indicates that the battery voltage is below its
operational limit. The battery should be checked
and replaced. See the meter installation manual
for the battery replacement procedure.
The icon is automatically shut down after the
battery voltage returns to its normal value.
The battery date and operation time can be
inspected via the Device Info display (see
Device
Info Display ). After replacing the battery, reset
the battery operation time via the reset menu
(see Resetting Accumulators and Log Files ).
Medium Electromagnetic field indicator with auto-reset.
Indicates presence of a high electromagnetic
field that can affect accuracy of energy
measurements. The electromagnetic interference
event start and end time are recorded in the
meter event log.
The icon is automatically shut down after the
electromagnetic field disappears.
Present tariff rate
No load/Power flow direction indicator
Voltage phase presence indicators
Diagnostic message indicator