Load Limiting Operation; Load Limit Power Threshold; Load Limit Period; Load Limit State Change - Landis+Gyr E470 Series User Manual

Load limiting operation

16 Load limiting operation
16.1

Load limit power threshold

16.2

Load limit period

16.3

Load limit state change

16.4

Load limit restoration period

D000058620 en a – E470 Series 3 SMETS2 100 mm – ZCX310 – User Manual and Functional Description
Issue 1.2
The meter can be configured to support load limiting operation.
To support load limiting the following values need to be configured:

The load limit power threshold (W)

The load limit period (seconds)

Load limit state change

The load limit restoration period (seconds)
This is a configurable value where once the instantaneous usage (kW) is
exceeded the meter will register the load limiting event.
The meter status may change depending on the load limit state that has
been detected. Typically, the meter will either display an indication that the
threshold has been exceeded or disconnect supply to the consumer.
Where load limiting is enabled the meter can also be configured to support
a load limiting period. The load limiting period (defined in seconds) is used
as a guard time to denote when the load limiting action will be
implemented.
For example; If the load limiting was configured to 30 seconds; then the
instantaneous usage would have to be exceeded for more than 30 seconds
before the action was implemented.
The load limit state supports two conditions that can be configured for the
support of load limiting.
The first state is to disconnect supply to the consumer, followed by
immediately arming the supply for reconnection either by manual
intervention, or by restoration period.
The second state is to remain unchanged, where the meter will display that
load limiting has been exceeded and generate the sending of an alert
indicating the change in state via its HAN Interface.
After a load limit action, has occurred the supply control switch is
immediately set to armed state to allow the consumer to reconnect the
supply.
The load limit restoration period can be configured (in seconds) to perform
an automatic reconnection of supply after the specified time period. The
use of this function is to enable reconnection without the consumer having
to go to the meter and press the button to reconnect the supply control
switch.
The meter can be configured to support load limiting as a factory default or
via commanded to enter this mode by a GBCS message.
Load limiting events will be recorded in the event log, and will send an alert
via the HAN to the user interface.
117/143
© Landis+Gyr