Protection Of People And Equipment; Rapid Shutdown - Fronius Primo GEN24 208-240 Operating Instructions Manual

Protection of people and equipment

Rapid shutdown

Two different types of rapid shutdown (RSD) can be triggered depending on the
configuration and on-site installation:
-
-
Limited rapid shutdown function in backup power mode (PV Point and Full
Backup)
If PV Point or Full Backup is configured, rapid shutdown cannot be triggered via
the loss of grid connection. This can result in serious personal injury and damage
to the PV system.
▶
Self test error automatic: RsdSelftestFailed
When an RSD occurs, an entry appears in the Event Log menu: RsdTriggeredByL-
ossOfAc (interruption by AC breaker) or RsdTriggeredBySwitch (interruption by
WSD circuit)
In case a module-level shutdown equipment within the PV array is used in com-
bination with the inverter, this labeling has to be used acording to NEC (Section
690.12), CEC (Section 64-218):
Via external buttons: One or more external buttons can be installed on the
WSD (wired shutdown) interface of the
25. Pressing one of these buttons interrupts the communication from the
inverter to the rapid shutdown devices attached to the PV modules, only if
they correspond to the SunSpec standard for rapid shutdown. The terminals
are discharged to < 30 VDC and < 15 VAC within 30 seconds after RSD initi-
ation.
Via the loss of the grid connection: An automatic rapid shutdown can also
occur if the grid connection is lost. The inverter identifies a failure of the grid
connection and terminals are discharged to < 30 VDC and < 15 VAC. The in-
verter also interrupts the communication to the shutdown devices of the PV
modules if they correspond to the SunSpec standard for rapid shutdown.
WARNING!
A WSD switch must be installed for all backup power modes (PV-Point and
Full Backup) (see Installing the WSD (wired
is then triggered via WSD.
SOLAR PV SYSTEM EQUIPPED
WITH RAPID SHUTDOWN
SOLAR PV SYSTEM IS EQUIPPED
WITH RAPID SHUTDOWN.
TURN RAPID SHUTDOWN SWITCH TO
THE „OFF" POSITION TO SHUT DOWN
PV SYSTEM AND REDUCE SHOCK
HAZARD IN ARRAY.
Data communication area
shutdown)). The rapid shutdown
SOLAR ELECTRIC
PV PANELS
on page
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