SMA SUNNY BOY 5000-US, Руководство по установке

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SMA America, LLC
Safety
SB50US-80US-IA-en-36 SB50US-80US-IA-en-36 13
Arc Fault Circuit Interrupter AFCI
Only the following Sunny Boy types are equipped with an automatic arc fault circuit interrupter
(AFCI):
• SB 5000US-12
• SB 6000US-12
• SB 7000US-12
• SB 8000US-12
Edition 2011 of the National Electrical Code
®,
Section 690.11, requires that all PV plants attached
to a building are fitted with a means of detecting and interrupting serial electric arcs (AFCI) on the PV
side.
An electric arc with a power of 300 W or greater must be interrupted by the AFCI in the time specified
by UL 1699B. A triggered AFCI may only be reset manually.
The arc fault circuit interrupter (AFCI) can be deactivated in the "Electrically qualified person" mode
via the communication device if this function is not desired.
Anti-Islanding Protection
A stand-alone grid is a status. It occurs when the power distribution grid is switched off and the Sunny
Boy is in operation. For this to happen, the remaining load must be resonant at 60 Hz and exactly
match the power of the Sunny Boy. Although the appearance of these conditions is extremely unlikely,
the Sunny Boy has an active safety algorithm to protect against islanding. The effect of this is that, in
the event of the power distribution grid being switched off, the PV plant does not supply any power
to a symmetrical load that is resonant at 60 Hz. In addition, the Sunny Boy regularly feeds leading
and lagging reactive currents into the power distribution grid. This procedure is checked by the
certification body in order to destabilize and switch off a stand-alone grid status.
Operating Temperature
The Sunny Boy delivers full performance in ambient temperatures up to +113 °F (+45 °C). Due to
the fan cooling, this level of performance can be achieved in closed rooms. The Sunny Boy does
remain operational above +113 °F (+45 °C), but it reduces the level of performance so as to protect
the internal component parts from overheating.