Installation Instructions 29
The inverter is intended to be used under +60
o
C. When the temperature reaches 70
o
C,
power is derating and derating to zero as it up to 85
o
C. When the heat peak
temperature has decreased, the inverter starts up again automatically.
5.6.3 Ground fault current interruption (GFCI)
AC/DC-sensitive residual current device monitors the leakage and residual current
from the inverter’s grid connection to the PV generator and disconnects the circuit
within 0.3 s when the ground/leakage current exceeds 300 mA.
The residual current rises by 30 mA, 60 mA and 150 mA, the inverter must stop feeding
in 0.3 s, 0.15 s and 0.04 s, respectively.
5.6.4 Isolation fault detection
Before connecting, the isolation resistance in DC side has to be larger and equal than 1
KΩ/V. This is proportional to max. DC input voltage. However, the minimum
resistance must be larger than 500 KΩ. If the isolation resistance is lower than the
permitted value, the inverter will stop working and show “Isolation fault” on the LCD.
5.6.5 Earthing fault monitoring
If there is an earth fault including no earthing or reversing the wire of PE and L or N.
The inverter will detect before feeding.
5.6.6 Active anti-islanding protection
The inverter monitors the islanding effect actively. It stops feeding within 5 s and
shows “utility loss” on the LCD if the island effect occurs, then automatically
reconnects when the error has been eliminated.
5.6.7 DC current injection monitoring
The Eversol is integrated with DC current injection monitoring unit. If the DC current
injection is larger than 1 A, the inverter will stop feeding in 2 s.
5.6.8 DC reverse polarity protection
The Eversol monitors the polarity of DC side, and it will not work if the DC polarity
reverses.
To Next Page
