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17.
Supply Grid – Network Settings
17.1 Grid Limit/Load Curtailment
Sets the limit that can be drawn from the grid connection (i.e. the maximum import current or the main fuse
rating).
Example: A property may have a grid supply limit of 65A. Several appliances are on so the property is
consuming 12kW (52A). The user wants to charge in FAST mode. Without the Grid Limit set, the total
consumption would exceed the allowed import current and trip the supply or blow a fuse. However, with a Grid
Limit setting of 60A,
maximum allowed import current would not be exceeded.
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Note: When using a
maximum current limit when using a hardwired CT is 100A
Note: For installation in the UK where the Distribution Network Operator accepts load curtailment instead of an
upgrade to the supply, the Grid CT must be wired to the
17.2 Battery
If the property has a static AC battery system installed, it is possible to get the
the battery system, provided a CT has been installed to monitor the battery inverter.
The table below details the different settings for working with an AC coupled battery storage system:
Setting
Function Description
None
There is no battery system installed.
Avoid Drain
Stops the
surplus power from the solar or wind generation.
Avoid
Effectively allows the
Charge
the battery when charging from solar or wind generation.
Avoid Both
Provides both of the above functions. This setting will normally provide the best
compatibility
Limit to Gen
Will limit the output of the
draining of an AC coupled battery system. This setting does not require a CT to
monitor the battery but does need a CT to monitor the solar/wind generation.
Note: This setting is to support legacy installations – it is preferable to install a CT to
monitor the battery and use one of the settings below.
17.3 Net Phases
When enabled, all readings from 3-phase
that surplus generation on ANY phase will be considered available for consumption on ANY other phase.
Note: With a three phase
Page 22 of 41
zappi
would temporarily limit the charging current to 8A (about 1.8kW) and the
to measure the grid supply, the highest value for the Grid Limit setting is 65 Amps. The
zappi
(or other linked
zappi
myenergi
zappi
, Net Phases should normally be turned on
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and cannot be used with a
myenergi
devices) draining the battery when using
(or other linked
myenergi
(except when boosting), to prevent unwanted
zappi
devices configured as 3-phase, will be netted. This means
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.
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to work in harmony with
devices) to take priority over
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