King Air C90GTi, Pilot Training Manual

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GENERAL
The Electrical System section of the training
manual presents a description and discussion
of the airplane electrical system and compo-
nents (Figure 2-1). The electrical system is dis-
cussed to the extent necessary for the pilot to
cope with normal and emergency operations.
The location and purpose of switches, indica-
tors, and circuit breakers, along with DC gen-
eration and distribution is described. This
section also includes some of the limits of, and
possible faults with, systems or components.
BATTERY AND GENERATOR
The air plane electrical system is a 28-VDC
(nominal) system with the negative lead of
each power source grounded to the main air-
plane str ucture. DC electrical power is pro-
v i d e d b y o n e 4 2 - a m p e r e - h o u r, s e a l e d,
l e a d - a c i d b a t t e r y, a n d t wo 2 5 0 - a m p e r e
s t a r t e r / g e n e r a t o r s c o n n e c t e d i n p a r a l l e l .
B a s i c e l e c t r i c a l s y m b o l s a r e s h ow n i n
(Figure 2-2).
FOR TRAINING PURPOSES ONLY
2-1
CHAPTER 2
ELECTRICAL POWER SYSTEMS
KING AIR C90GTi/C90GTx PILOT TRAINING MANUAL
INTRODUCTION
Familiarity with, and an understanding of, the airplane electrical system will ease pilot
workload in normal operations in case of an electrical system or component failure. The
pilot should be able to locate and identify switches and circuit breakers quickly, and should
also be familiar with appropriate corrective actions in emergency situations.
2
ELECTRIC
AL
POWER
SY
STEMS