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Document No.: G304eS/AFMSupp, R01
Date of Issue: 11/17
7-7
H
P
H
Ltd.
More detailed data about propeller which is used on G 304 eS
powered sailplane there are described in separate
FES HPH P1 102
PROPELLER manual.
7.10.4 Wiring
FES wiring consists of power, signal and 12V wires, and different
types of connectors.
DC/DC converter is used to convert high voltage from FES battery
packs, to 12V which is used to supply instruments, and main
contactor. It also charge 12V battery if installed.
Main contactor is used to connect and disconnect traction batteries
(FES battery packs) to motor controller. There is installed also
precharge resistor.
7.10.5 Control Units
Motor controller is used to convert high voltage DC to three phase AC
voltage which goes to motor. It also send RPM and controller
temperature by CAN bus to FCU instrument.
Ventilators are used to cool down motor controller.
Power switch (double pole) is used to give 12V power to main
contactor, supply to electronic circuit board in motor controller.
BMS inside of battery packs is used to balance and to control
charging. It can be connected to PC with a special cable in order to
monitor charging process with BMS Control software. During flight
BMS is sending data to FCU instrument, about temperature of the
pack and voltage levels of each cell.
7.10.6 Main Fuse
325A power fuse protect the whole system in case of a high power
short-circuit.
