Czech Aircraft CRUISER AIRCRAFT PS-28 Cruiser 2021, Руководство по обслуживанию

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PS-28 Cruiser
PS-28N Cruiser
CR-MM-1-0-00
CHAPTER 11 – ELECTRICAL SYSTEM
Revision No.: 1 Date of issue: 2011-07-08
11 - 2
11.1 General
Electrical system of PS-28 Cruiser airplane serves for supplying electrical current to the
instruments.
11.2 Description and operation
The airplane is equipped with 14 VDC electrical installations with grounded negative pole (see
Fig. 11-1). Primary source of electrical energy is formed by the generator. The secondary
source of electrical energy is the battery 12 V, which is located on the firewall. It is used for
starting the engine and in the case of generator failure as a back-up source of electric energy.
DC voltage is distributed to the individual systems by means of the main busbar. Systems are
protected by circuit breakers which are permanently ON and switches-circuit breakers which
are turning ON as needed. If some of the circuit is overloaded, then the circuit breaker
disconnects the circuit. Some circuits are protected by the fuses.
After switching the MASTER BAT switch ON and by turning the ignition key to the position
START the starter is activated. The starter is supplied from the battery before starting the
engine. After starting up the engine and reaching the idle rpm and switching the MASTER
GEN switch ON, the generator starts supplying current to the electrical network.
Information about voltage in the main busbar is indicated by EMS or by the analog voltmeter
on the instrument panel.
NOTE: Valid wiring diagrams are mentioned in PS-28 Cruiser Wiring Manual.