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4. Example: if you have 20 A main fuse and would like to change it in Micro EVSE 3, press a front button on keep
the button pressed….pass the 1
st
set of blinks, 2
nd
set of blinks, 3
rd
set of blinks and when you get to the 4
th
set of blinks count the LED blinks to 20 and at 20
th
blink release the button. Now the station “knows” the
rating of main fuse (amperage). You can see what you set in the WiFi app. in “Advanced info” menu.
5. Test the 3/1-phase main fuse protection dynamic charging:
Connect to WiFi and go to the Metron Charge Control web-based application. Connect the electric vehicle to
the charging station and observe the charging current measurements in WiFI Charge Control app. under
“Advanced info”. Intentionally put the big load to each of the phases (one by one) to surpass the main fuse
rated current and observe if the charging current decreased in the way the total main fuse current is not
higher than main fuse rated current. To do that you need to connect powerful load to each phase (easiest
way is to use regular 2 kW electric heaters – 1,2,3… connected in parallel.
6. Explain to the client that the charging station will automatically reduce or stop the charging in case of main
fuse overload. In case of charging interruption because of overload the blue status LED will blink 4 times
(with pause after 4 blinks) until the load on the main fuse is low enough to resume charging. The main fuse
current on the most loaded phase needs to be app. 7A lower than rated fuse current in order the charging
station will allow charging to start/resume. The status LED can blink 4 times even if the vehicle is not
connected. This will inform the user that the charging cannot start until the other powerful house loads are
switched-off.
7. Explain to the client that in case of installed solar/wind/hydro power plant the charging station allows vehicle
charging with higher overall current than the set nominal main fuse value (this function doesn’t work at
night of course). This feature is active only in case Solar/wind/hydro power plant phases = House grid
connection phases.
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