en
9
3�3
Safety installations
Surge protection
The inverter is fitted with surge arresters (varistors) at its input and output. Each MPP
tracker (plus and minus connections) is equipped with a surge arrester. On the AC side,
each mains phase has a surge arrester (for details on the surge arresters fitted, see
Section 11).
When designing the PV system, it may be necessary to provide additional external light-
ning protection.
Fault current monitoring
The inverter has an AC/DC sensitive leakage current sensor which monitors the stray
currents occurring on the generator side. This sensor can distinguish between the oper-
ational capacitive stray currents (caused by capacities of the PV modules to ground) and
leakage currents (caused by touching a pole of the PV generator). If the inverter detects
an excess in the permissible leakage or stray currents, it will disconnect from the grid.
Functions for current and output limitation
When it is needed, the inverter limits the DC feed-in current, the output power and the
output current.
Temperature limitation
At ambient temperatures of more than 45°C the equipment temperature may reach more
than 80°C. In such cases, the maximum in-feed power is temporarily reduced. When the
equipment temperature rises above 85°C, the inverter disconnects from the grid.
Summary of Contents for SM30HT4
Page 1: ...Instruction manual SolarMax HT series 30HT4 32HT4...
Page 10: ...10 3 4 Dimensions mm 590 580 397 847 871 Figure 1 Dimensions with wall mounting bracket...
Page 11: ...en 11 3 5 Views of the unit 2 3 4 12 11 9 10 8 7 7 6 1 5 Figure 2 Views of the unit...
Page 74: ...SolarMax Service Center hotline solarmax com www solarmax com service 2014 05 en...
