Load Control (Zmr100Xr Only); Maximum Demand; Slab' Maximum Demand - Landis+Gyr E230 User Manual

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6.6.2

Load control (ZMR100xR only)

6.7

Maximum demand

6.7.1

'Slab' maximum demand

© Landis+Gyr
Voltage monitors produce Events signals due to over- and under-
voltage, missing voltages (phase losses) and total phase failure (total
power loss).
Tampering inputs produce Events signals due to strong DC fields, as
well as meter and terminal cover or meter box opening.
Demand monitors produce Event signals indicating a high demand value
(two demand excess monitors based on the average demand).
Power factor monitor produces Event signals indicating too low power
factor value. The various control sources or a combination of them can
be used to enable and disable registers, to control arrows on the LCD
and the Alert LED, and to control outputs.
The meter's external outputs can be controlled by:

TOU signals

Control input signals

Combination of tariff signals

Event signals

Time/date not valid

Demand monitor

Power factor monitor

Voltage monitoring

Tamper monitoring

Alert occurred
Maximum Demand (MD) can be measured in kW, kVAr or kVA. MD
functionality is available in two different ways either 'Slab' or 'Rolling'.
Both of these, however, use the same registers and settings.
Registers (matching the number of rates available, plus total) in E
made available for up to four rates and total (ZxR100xC) or up to six
rates (ZMR100xR). Current, Previous and Summation MD values are
recorded and are available for display and readout.
This MD method works by calculating the maximum demand over fixed
periods. The Maximum Demand Period is set to the period (in minutes)
over which to calculate the MD. This value must be a factor of 60 (i.e. 1,
2, 3, 4, 5, 6, 10, 12, 15, 20, 30 or 60).
The demand is then calculated at this interval in such a way that one of
the calculations is done on the hour boundary (e.g. if the period is 12
then the demand is calculated at 0, 12, 24, 36 and 48 minutes past the
hour).
D000044352 en g – E230 Residential Electricity Meter – ZxR100xC/ZMR100xR – User Manual
Operation
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