Install the Chargepoint
EVZM-01-V01R1 Installation and Operation Manual
Zura Intelligent EV Charging Unit
December 2022
Page
32
of
42
IMPORTANT: 3-Cable CTs
Some models of CT used for Load Balancing have 3 cables.
If a 3-cable CT is used, the
H+
and
H-
cables connect as shown above. The third cable is
part of the CT cable’s electrical screening and must be connected to the charger’s
incoming
Earth terminal
.
x
Separate a required short length of the CT’s earth cable from the
H+
and
H-
cables.
x
Remove
only
enough insulation from the earth cable to make the connection to
the earth terminal.
x
Make sure the CT’s earth cable is connected securely to the incoming earth
terminal.
Configure Load Balancing
Configuration of the load balancing system is performed using the Smart Application as
part of the online configuration process.
The main fuse or circuit breaker in the property’s consumer unit should be labelled to state
the maximum load. The load balancing system
must
be set to the same figure (or lower)
than the main fuse or circuit breaker.
x
Do NOT set load balancing above the maximum point. Load balancing will not initiate
and all power to the property will be lost if the maximum point is reached.
Depending on the option selected by the installer…
x
Load balancing in a
domestic
system can be configured to initiate load balancing for
properties of between 60 Amps and 100 Amps.
x
Load balancing in a
commercial
system can be configured to initiate load balancing
for properties of between 60 Amps and 255 Amps.
