Section 10 Protections - Samlexpower Pure Sine Wave PST-1500-12 Manuel Du Propriétaire

Section 10 |
(the drop is proportional to the load impedance). Surge Power of 175% for PST-2000
and 200% for PST-1500 will, thus, be provided for < 8 ms every half cycle. If this situation
continues for 2 to 2.5 sec, Overload Condition is activated.
Overload Condition: If there is a continuous overload of 110% to 115% for 2 to 2.5 sec,
the output voltage will be shut down. Red LED marked "OVERLOAD" (3, Fig 6.1) will turn
ON, the Green indication light on the GFCI outlet will be OFF and buzzer alarm will sound.
The Green LED marked "POWER" (2, Fig 6.1) will continue to be lighted. The unit will be
latched in this shut down condition and will require manual reset. To reset, switch Off the
unit using the ON/OFF Switch (1, Fig 6.1), wait for 3 minutes and then switch ON the unit
again. Before switching ON, determine and remove the cause of overloading.
Short Circuit Condition: Short circuit condition will be detected when the AC output
voltage drops to 80VAC or lower over a period of around 1 to 1.5 sec. The AC output
voltage will be shut down thereafter.
Red LED marked "OVERLOAD" (3, Fig 6.1) will turn ON, the Green indication light
on the GFCI outlet will be OFF and buzzer alarm will sound. The Green LED marked
"POWER" (2, Fig 6.1) will continue to be lighted. The unit will be latched in this shut
down condition and will require manual reset. To reset, switch Off the unit using the
ON/OFF Switch (1, Fig 6.1), wait for 3 minutes and then switch ON the unit again. Before
switching ON, determine and remove the cause of short circuit.
10.2 WARNING ALARM - LOW DC INPUT VOLTAGE
The voltage at the DC input terminals will be lower than the voltage at the battery
terminals due to voltage drop in the battery wires and connectors. The drop in the
voltage at the DC input terminals of the inverter could be due to lower battery voltage
or due to abnormally high drop in the battery wires if the wires are not thick enough
(Please see Section 8.4.3 "Connection from Batteries to the DC Input Side – Sizing of
Cables and Fuses"). If the voltage at the DC input terminals drops to 10.7V ± 0.1V or
lower for PST-1500-12 / PST-2000-12 or to 21.4V ± 0.2V or lower for PST-1500-24 / PST-
2000-24, a buzzer alarm will be sounded. The Green LED marked "POWER" (2, Fig 6.1)
and indication light on the GFCI will continue to be lighted and the AC output voltage
would continue to be available. This warning buzzer alarm indicates that the battery
is running low and that the inverter will be shut down after sometime if the voltage at
the inverter terminals further drops to 10V ± 0.1V or lower for PST-1500-12 / PST-2000-12
or, to 20V ± 0.2V or lower for PST-1500-24 / PST-2000-24.
10.3 LOW DC INPUT VOLTAGE SHUT DOWN
If the voltage at the DC input terminals drops to 10V ± 0.1V or lower for PST-1500-12 /
PST-2000-12 or to 20V ± 0.2V or lower for PST-1500-24 / PST-2000-24, the AC output is
shut down. Buzzer alarm is sounded. The Green LED marked "POWER" (2, Fig 6.1) will
remain lighted. The Green indication light on the GFCI will be OFF.
The unit will reset automatically when the DC input voltage rises to 11.5V ± 0.3V or high-
er for PST-1500-12 / PST-2000-12 or to 23V ± 0.5V or higher for PST-1500-24 / PST-2000-24.
42 | SAMLEX AMERICA INC.
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