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Shut-down due to high DC input voltage.
If the voltage at the DC input terminals
exceeds 16.5 V for PST-150S-12A or 33 V for PST-150S-24A, the inverter will be shut
down temporarily. The green LED (3) will be switched off and there will be no AC
output.
The unit will be reset automatically when the voltage drops down to
16.7 V +/- 0.2 V for PST-150S-12A or 33.5 +/-0.2 V for PST-150S-24A.
Shut-down due to reversal of polarity at the DC input terminals.
The positive of the
battery should be connected to the positive DC input terminal of the inverter and the
negative of the battery should be connected to the negative DC input terminal of the
inverter. A reversal of polarity (the positive of the battery
wrongly connected
to the
negative DC input terminal of the inverter and the negative of the battery
wrongly
connected
to the positive DC input terminal of the inverter) will blow the DC side fuse(s)
inside the inverter
.
If the DC side fuses are blown, the inverter will be dead. The green
LED(3) will be switched off and there will be no AC output.
THE ABOVE DC SIDE
FUSES ARE SOLDERED AND ARE NOT EASILY REPLACEABLE BY THE USER
(WILL REQUIRE REMOVAL OF THE CIRCUIT BOARD). Please call Technical
Support to arrange for repair.
NOTE: DAMAGE CAUSED BY REVERSE POLARITY WILL NOT BE COV-
ERED BY WARRANTY!
Shut-down due to over-temperature.
In case of failure of the cooling fan or in the case
of inadequate heat removal due to higher ambient temperatures / insufficient air ex-
change, the temperature inside the unit will increase. The temperature of a critical hot
spot inside the inverter is monitored and at a particular upper limit, the AC output of the
inverter is shut down temporarily. The red
Over Temp
LED (5) is lighted and a buzzer is
sounded. The unit will automatically reset after the unit has cooled down.
Shut-down due to overload.
The inverter can provide a higher than normal instanta-
neous (< 1 second) power 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 either the continuous power or the instantaneous power is exceeded over a
longer length of time, the AC output of the inverter is shut down permanently. The green
LED (3) is switched off and the red overload LED (4) is lighted.
The inverter gets latched
in this condition. To reset, the power on / off switch (2) is required to be switched off and on
again.
Before switching on the inverter again, ensure that the cause of the overload is
removed.
NOTE:
If the red overload LED (4) remains lighted after resetting the unit, remove all
the loads from the inverter and reset again. If the red overload LED (4) still remains
lighted without any load, the inverter has developed an internal defect. Please call Tech
Support.
Shut-down due to leakage.
In case there is a leakage of > 5 mA due to ground fault, the output will be shut down.
The green LED (3) will be switched off and the red overload LED (4) will be lighted. The
inverter gets latched in this condition. To reset, the power on/off switch (2) is required to
be switched off and on again. Before switching on the inverter again, ensure that the
cause of the ground fault is removed.
