Comprehensive Protection
975-0054-01-01 1–3
Comprehensive Protection

XS400 is designed to meet UL 458 and CSA C22.2 No. 107.1 safety

standards and it is compliant with FCC Class B.

XS400 comes equipped with numerous protection features to guarantee

you safe and worry-free operation.

Protection feature This protection feature…
Low voltage indication and
shutdown Protects the battery from becoming completely discharged. The
Low Battery light indicates that input voltage is low (10.7 volts). If
the input voltage drops below 10.3 volts, the XS400 shuts down
automatically and the Inverter ON light turns off. The XS400
recovers automatically when the input voltage comes up to about
12.6 volts.
High voltage shutdown Protects the XS400 by disabling the AC output when the input
voltage rises to 15.3 volts or more. The AC output is enabled when
the input voltage drops to 14.5 volts.
Over-temperature
shutdown Disables the AC output of the XS400 when the internal temperature
rises to unacceptable levels due to higher ambient temperature or
overloading. The XS400 recovers automatically when it cools
down.
Overload protection Disables the AC output of the XS400 if the appliance connected to
the inverter exceeds the 400 watt rating of the inverter. The XS400
will have to be reset. (See “Resetting After a Fault or Shutdown” on
page3–9.)
Supplemental circui t
protection Trips and disables the AC output when a current in excess of 7.5
amps is drawn from the XS400. The supplemental circuit protector
can be reset to enable the unit to operate again after clearing the
overload condition. (See “If there is a short circuit, the
Supplemental Circuit Protection button trips.” on page3–9.)
Short circuit protection Disables the AC output of the XS400 when a short circuit is applied
on the AC output. Once the short circuit is clear ed, the XS400 will
have to be reset. (See “Resetting After a Fault or Shutdown” on
page3–9.)
Ground fault circuit
interrupter (GFCI) Trips and disables the output of the XS400 when a ground fault
current is detected. The output can be enabled again by resetti ng th e
GFCI, once the ground fault is cleared. (See “Ground Fault” on
page3–9.)