MAULE AEROSPACE TECHNOLOGY, INC.
MAINTENANCE MANUAL
FOR
MT-7-420
9/02
29
GENERATOR CONTROL SYSTEM:
Overvoltage protection is incorporated in the generator control unit which will latch off regu-
lator output after an overvoltage event. Reset of latch off caused by either overvoltage or
shorten output is accomplished by momentary turn off of supply voltage, i.e., to reset to ON.
The generator output is monitored by reference to the ammeter located in the left side of
the instrument panel. Should the generator of warning light illuminate, move generator switch
from OFF to reset to ON. If system will not reset, investigate the electrical system malfunction.
The generator Control Unit in the electrical system contains the following functions:
a.
Voltage regulator
b.
Generator (line) contactor control
c.
Overvoltage protection
d.
Overload/Undervoltage protection
e.
Reverse current protection
f.
Reverse polarity protection
g.
Anti-cycle protection
h.
Latching field relay
i.
Flash start relay
j.
Overvoltage and Overload protection self test (using remote SW)
