Samlex America SAM-1500C-12 - Manual (Page 24)

22 | SAMLEX AMERICA INC.
protections & monitoring when inverter
is Supplying power & is operating as
Backup ac power Source
note: please refer to table 6.1 for status of monitoring LeDs and Buzzer for various
protections / operational conditions explained below.
over temperature protection
The unit is cooled by load-controlled fan. In case the fan fails or if the cooling is
inadequate due to higher ambient temperature or restricted airflow, the temperature
inside the inverter will exceed the safe temperature threshold and the unit will
automatically shut down. The unit will reset automatically on cooling down.
Low Battery Voltage protection
This condition is not harmful to the inverter but could damage the 12V battery. The
inverter automatically shuts down when input voltage drops to 10.5 ± 0.3V.
over Voltage protection
The inverter will automatically shut down when the input voltage exceeds 15.5 V± 0.2V.
Input voltage exceeding 16 volts could damage the inverter.
overload / Short circuit protection
The inverter will automatically shut down under short circuit conditions and when the
continuous / surge power exceeds rated watts. The unit will latch in shut down condition.
To reset, switch off the oN/off switch, wait for 3 minutes and switch oN again.
i
info
Some high capacitive loads like compact fluorescent Lamp (cfL) or Switched mode
power Supply (SmpS) will draw very high inrush current due to very fast volt-
age rise of the square wave nature of the modified Sine Wave and shut down the
inverter. try using a small resistive load in parallel to reduce high inrush current and
prevent overloading.
Low input Voltage alarm
An alarm will sound when the voltage at the input terminals of the inverter drops to
10.8V ± 0.3V. This is an indication that either the battery terminal voltage has dropped
due to its discharged condition and needs to be re-charged or there is an excessive volt-
age drop across the wires connecting the inverter to the battery (due to use of thinner
and longer length of wires that will produce higher voltage drop at higher loads or due
to loose connections). The user should stop operation of the electronic device at this time
since the inverter will shut down automatically shortly thereafter, when the input voltage
at the inverter further drops to 10.5V ± 0.3V.
SECTION 6 | Protections Monitoring
& Troubleshooting