E2620 Auxilliary Power Unit User Guide
Detailed Description
The Auxilliary Power Unit or APU is housed in a rectangular
modular aluminum enclosure which is black anodized for
protection against corrosion, and to help with heat dissipation.
This unit includes a battery cable, a 40A battery guard, a 600W
inverter, a 25A battery charger, a fan controller, and a connector
to the battery monitor.
Power Input
Battery power at a nominal 12V enters the unit via the battery
cable to a terminal block, which is a common connection point for
the other system components.
Battery Guard
The battery guard is a protective switch between the battery and
the inverter which is normally on when the input battery voltage
is above a programmed threshold. Once the battery voltage
drops below this threshold, the switch is turned off so the inverter
load does not discharge the battery any further in order to protect
the battery against excessive discharge which would adversely
affect its lifetime. The battery guard is limited to a 40A load
which represents a ~400W maximum load at the inverter output.
Loads greater than 400W will cause the battery guard to
shutdown until the overload is removed. The battery guard is
enabled on or off by the battery monitor.
Inverter
The inverter converts the 12VDC battery power to a 120VAC pure
sine wave output through two standard 120VAC outlets. A USB
port is also available to power or recharge 5V USB devices. The
output power rating is up to 600W continuous although the
5
This device is not authorized for use with any product where the failure or malfunction of
this device can reasonably be expected to cause injury or death. This device is not
authorized for use in any life support system due to the risk of injury or death.
