Instructions Manual for 5EVM-D Models
M5EVMD2011I
5EVM-D: Electric Vehicle Home AC Charging Station
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
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5.3
Bluetooth
The equipment features Bluetooth communications, so that the user can manage the recharge
point through a
ZIV
application.
Through this interface, the user can carry out the basic configuration of the equipment, start or
stop a recharge or consult the recharges historical log.
5.4
Residual Current Device (RCD)
The installation of the recharging points implies an alternating current differential electrical
protection, so that if a residual current of more than 30mA is exceeded, the protection acts with
the aim of protecting the safety of people.
However, if there is an insulation failure in the vehicle that involves a leakage of direct current,
the differential protection could be inhibited, which would lead to a lack of protection that would
have a negative impact on safety.
If this functionality is available, the recharging point performs a monitoring of the DC residual
current when it is charging a vehicle and, if it exceeds 6mA, the recharging point stops the
recharge. In this way, the AC differential protection is not inhibited at any time.
5.5
Reconnector
When it comes to installing a charging point in the home environment, the majority opts for
scheme 2 (according to the Spanish regulation ITC-BT-52), so that the charging point is
installed downstream of the home meter. In this way, the user uses the same electric meter for
both the home and his electric vehicle.
The new smart meters that are installed in our homes integrate a power circuit breaker (CB), so
that they cut off the electricity supply when a house demands more power than the contracted
power. When this situation occurs, the CB remains open until the meter detects that there is no
load connected. When all the loads have been disconnected, the meter can reset its CB.
In order to reset the CB, the user must open the general switch of his house, unlatching all the
loads hanging from the meter and keeping it in that state for a few seconds. Then, the electric
meter can reset the power supply. Once the user proceeds to close the breaker, the electric
energy is again available in your home.
If we introduce a recharge point in another circuit that starts from this home meter (scheme 2),
we find the problem that we also have to disconnect the recharge point from the grid so that the
meter can restore the electricity supply after a disconnection through the ICP.
