Samlexpower PST-300-12 Manuel Du Propriétaire page 40

Section 10 | Protections
10.2 WARNING ALARM - LOW DC INPUT VOLTAGE
The voltage at the DC input terminals of the inverter will be lower than the voltage at
the battery terminals due to voltage drop in the battery cables and connectors. The drop
in the voltage at the DC input terminals of the inverter could be due to drop in battery
terminal voltage or due to abnormally high drop in the battery cables if the cables are not
thick enough (Please see details at Section 8.4.3 "Connection From the Batteries To the
DC Input Side of The Unit – Sizing of Cables and External Fuses"). If the voltage at the DC
input terminals drops to 10.5V or lower for PST-300-12 or to 21.0V or lower for PST-300-24,
the buzzer alarm will be sounded. The Status LED (2, fig 6.1) will continue to be GREEN
and the AC output voltage would continue to be available. This warning buzzer alarm
indicates that the DC input voltage is low and that the inverter will be shut down after
sometime if the voltage at the inverter terminals further drops to 10 V or lower for PST-
300-12 or to 20V or lower for PST-300-24.
10.3 LOW DC INPUT VOLTAGE SHUT DOWN
If the voltage at the DC input terminals drops to 10V or lower for PST-300-12 or, to 20V or
lower for PST-300-24, the AC output is shut down. Buzzer alarm is sounded and the Status
LED (2, fig 6.1) will turn oRANGE. The Green indication on the GfCI outlet will be off.
The unit will reset automatically when the DC input voltage rises to 11.5V or higher for
PST-300-12 or to 23V or higher for PST-300-24.
10.4 HIGH DC INPUT VOLTAGE SHUTDOWN
If the voltage at the DC input terminals rises to 16.5V or higher for PST-300-12 or, to 33V
or higher for PST-300-24, the AC output will be shut down temporarily. The Status LED
(2, fig 6.1) will turn oRANGE, there will be buzzer alarm and the Green indication on
the GfCI outlet will be off. The unit will be reset automatically when the voltage drops
down to < 16.5V for PST-300-12 or, to < 33V for PST-300-24.
10.5 OVER-TEMPERATURE SHUT DOWN
In case of failure of the cooling fan or in the case of inadequate heat removal due to
higher ambient temperatures / insuffi cient air exchange, the temperature inside the unit
will increase. The temperature of a critical hot spot inside the inverter is monitored
and at 95° C, the AC output of the inverter is shut down temporarily. The Status LED
(2, fig 6.1) will turn oRANGE, buzzer is sounded and the Green indication on the GfCI
outlet is switched Off.
The unit will automatically reset after the hot spot has cooled down to 70°C.
10.6 GROUND FAULT / LEAkAGE PROTECTION
The AC output is supplied through NEMA5-20R GfCI Duplex Receptacle (1, fig 6.1). The
GfCI will trip if there is 5 to 6 mA leakage / Ground fault on the load side or, if Neutral
40 | SAMLEX AMERICA INC.