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17.4 Export Margin
This sets a minimum level of export power which is maintained when
Export Margin would normally be set to 0W (zero Watts) so that all available surplus will be used to charge the
vehicle. In some cases, it may be desirable to always set a minimum export level set. An instance of this would
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be when using
with a hybrid PV/battery system.
17.5 CT Config
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measures current by using a number of Current Transformers (CTs). It is important that these are set
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up correctly so
knows the different power flows and can control the EV charge rate.
The 3 CT inputs should be configured to match the connected CT sensors. There are further settings for the
internal CT which measures the current being drawn by the EV.
Note: If you have CTs connected to a
CT settings are found through the Linked Devices menu rather than the CT Config menu.
Important: There must be only one Grid CT set (per phase) for the whole installation.
CT
Function Description
CTINT
This is the internal CT which measures the output (charging) current of the
CT1
CT1 Input
CT2
CT2 Input
CT3
CT3 Input
CT Types
CT Type
Function Description
None
No CT connected.
Grid
Grid CT monitors the import and export power of the property. This is the CT used to
determine if surplus power is available.
There must only be one Grid CT set for each phase
Generation
Monitors Solar PV or Wind generation
Only
Storage
Monitors a device that can 'store' energy (e.g. a third-party energy diverter) and
Only
enables the
considered as surplus power unless the device is intentionally using grid power (i.e. it
is boosting).
The CT should be installed on the "live" supply cable feeding the diverter, with the
arrow pointing away from it (i.e. towards the consumer unit / fuse board)
Gen &
Monitors Solar PV or Wind generation that is combined with a DC-coupled battery
Battery
Monitor
Monitors any load, for example a washing machine or a lighting circuit. This setting
can also be used to limit current drawn by
which includes other loads.
AC Battery
Used to monitor an AC-coupled battery.
With this setting it is possible to manage the distribution of surplus energy between
the battery and the
The Battery setting in the Supply Grid menu is used to configure how the
operate alongside the battery system. The CT should be installed on the "live" supply
cable of the battery inverter/charger, with the arrow pointing away from it (i.e.
towards the consumer unit / fuse board).
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then these CTs also need to be set up correctly. For a
to take priority over it. The power used by the third-party device is
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(and other
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is charging in ECO or ECO+ modes.
devices on a particular circuit
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devices).
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, the
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will
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