Maintenance; Meter Testing; Higher Register Resolution - Landis+Gyr E350 Series User Manual

Maintenance

7 Maintenance
7.1

Meter Testing

7.1.1

Higher Register Resolution

Display example
D000027979 en t – E350 Series 2, 3-Phase ZxF100Ax/Cx – User Manual
The meter is maintenance-free. The following points should be regularly
checked:

Is the meter dry and clean (particularly display and optical interface)?

Is the meter in operation and serviceable (displayed data reasonable)?

Are all seals undamaged?

Is there an error recorded based on periodical internal self-tests since
the previous check (check on the display or readout list)?

Have the values of the energy registers changed within reasonable
limits since the last data readout (no unauthorised manipulations)?
Continue with section 6.3 "Repairing Meters" in case of irregularities.
The meters are calibrated during manufacturing. A later recalibration is not
possible. Meter tests should be performed at periodic intervals according to
the valid national regulations (either on all meters or on specific random
samples). For this purpose, the meters must be removed as described in
section 4.5 "Disconnecting the Meter" and replaced by a substitute meter
for the duration of the test.
The meter features a service or certification display sequence, which allows
registers to be displayed with 3 decimal places. See 5.2.5 "Display
Sequence".
This sequence is entered by pressing the display button for more than 5 s.
It is exited again if the display button is not pressed for a time between 0
and 60 minutes (default 30 minutes) determined by parameterisation.
+Q
+P
This mode is used for controlling whether a change in a register value
accords with the number of impulses at the pulse output LED, which can
now be done with 0.5 kW in about 5 minutes. It is indicated by a flashing
decimal point.
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