Samlex America PST-200S-24E - Manual (Page 39)

38 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 39
seCtIOn 10 | Protections
The inverter has been provided with protections detailed below:
overload / Short circuit Shut Down
The inverter can provide a higher than normal instantaneous power (< 1 second) limited
to the surge power rating of the inverter. Also, the inverter can provide continuous
power limited to the continuous power rating of the inverter. If there is an overload
beyond these specified limits, the AC output of the unit will be shut down permanently.
RED LED marked “oVER LoAD” (3) will be lighted and GREEN LED marked “PoWER” (2)
will be switched off. The unit will be latched in this shutdown condition and will require
manual reset. To reset, switch off the power oN/off switch, wait for 3 minutes and then
switch oN again. Before switching on again, remove the cause of the shutdown.
Warning Alarm - Low Dc input Voltage
The voltage at the DC input terminals (8, 9) will be lower than the voltage at the bat-
tery 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 read “Section 8, Installation; DC SIDE CONNECTIONS; Connection From the Bat-
teries To the DC Input Side of The Unit – Wire and External Fuse Sizes”). If the voltage
at the DC input terminals falls below 10.7V for 12V versions or 21.4V for 24V versions,
a buzzer alarm will be sounded. The GREEN LED marked “PoWER” (2) will continue to
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 10 V for 12 V
versions or 20V for 24V versions.
Low Dc input Voltage Shut Down
If the voltage at the DC input terminals falls below 10V for 12V versions or 20V for
24V versions, the AC output is shut down. Buzzer alarm is sounded and the GREEN LED
marked “PoWER” (2) will be switched off. The unit will reset automatically when the
DC input voltage rises > 11.5V for 12V versions and > 23V for 24V versions.
High Dc input Voltage Shutdown
If the voltage at the DC input terminals exceeds 16.5V for 12V versions or 33V for 24V
versions, the inverter will be shut down temporarily. The GREEN LED marked “PoWER”
(2) will be switched off and there will buzzer alarm. The unit will be reset automatically
when the voltage drops down to < 16.5V for 12V versions and to < 33V for 24V versions.
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 / insufficient 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 RED LED marked
“oVER TEMP” (4) is lighted and a buzzer is sounded.