Product Overview
EVSM-V01-R1 Installation and Operation Manual
SecuriCharge Intelligent EV Charging Unit
December 2022
Page
6
of
33
NOTE:
When detailing Load Balancing and Load Management, this manual assumes the
installation of a single chargepoint. Whilst multiple chargepoints can be connected in a
similar way, installers may wish to consider connecting/monitoring using a third-party,
compliant energy management solution.
If connecting/monitoring via third-party equipment, make sure you are fully aware of
the manufacturer’s instructions so that the device/system can be installed correctly and
in conjunction with the unit installation.
About Load Balancing
This chargepoint has an optional
Load Balancing
capability which is designed to prevent
overloads of the property’s power supply when a vehicle is being charged. This is similar in
some ways to Load Management but is NOT the same. Refer to the next page to read
about Load Management.
Once correctly installed and configured, the system will monitor the power being drawn
by the charging process and will compare this to the permissible maximum for the
property as a whole (which is set as part of the configuration). With this information, the
power made available for charging can be dynamically adjusted to reduce the load
before the property’s maximum load is exceeded.
For example, if the property’s main fuse (or circuit breaker) is rated at 60 Amps, the fuse
will operate and cut all power to the property if a draw of 60 Amps is exceeded.
It can be relatively easy to draw significant power if several property appliances are in use
at the same time.
Kettle
13 A
Oven
13 A
Dishwasher 10 A
Iron
13 A
Total =
49 A
In this example, only 11 Amps remain before the 60 Amp
limit is reached.
If an electric vehicle is now put on charge and is drawing
16 Amps, the limit would be exceeded, and the property’s
fuse would operate to cut all electrical power to the
property.
With load balancing enabled, the amount of power made available for charging will, if
required, be automatically adjusted to a level that does not exceed the maximum for the
property.
The system will continue to monitor the power and will dynamically increase and decrease
the power made available for charging in response to the demand for power from the
rest of the property.
Rolec chargepoints are pre-configured to load balance with a 13A ‘buffer’. This means
that whatever the property fuse may be, load balancing will start 13A before its maximum
limit is reached.
For example, if the charger is configured by the installer for use with a property with a 60A
fuse, load balancing will start at 47Amps. Similarly, for a property with an 80A fuse, load
balancing will start at 67Amps. This allows combined use of the charger plus other
appliances in normal use with no effect on the property’s electricity. You can then use up
to 13A more, with no risk of exceeding the maximum limit and load balancing will
continue to reduce charger power if more electricity is used by other appliances.
