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VendorID1 : EVSE Limits
EVSE Limits are generated by the charger to define the maximum permissible charging
current. The device will offer charging current based on the lowest-value limit. 3-phase
models have global current limits (i.e., the currents offered on the three phases are always
identical).
Default principal current limit, defined by the
charger's hardware and set to 32A per phase
Limit set due
to cable's
proximity pilot
Type II charging cables have a built-in resistor
between the PE and PP terminals, which encodes
the maximum current the cable can handle. The limit
is enacted if the cable is rated for less than 32A
charging current.
Limit set due
to high
temperature
See "TemperatureCurrent Limits" above. The
charger derates the current offered when its
internal temperature reaches certain thresholds.
ExtTransformerCurrentLim
it
Limit set by
external
transformer
Current limit set by the CT clamp(s) on the mains
feeder line based on the rating of the installation's
MCB.
Limit set by
OCPP grid
operator
The limit is enacted when a smart charging profile
such as "Charge Point Max Current (A)" is sent by
the backend.
The limit is defined by the current rating of the
circuit breaker(s) for the charger's mains circuit.
Enacted when the charger needs to be derated in
installations which cannot provide 32A per phase.
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