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Figure 401 (2/2)
MAA
Validity : With front battery 24-30-04Page 404
pN OCT 02
EXTERNAL POWER
DESCRIPTION AND OPERATION
1. GENERAL
The external power is the part of the system within the aircraft which links external electrical power to aircraft electrical system.
This sub-system consists of the following elements :
- ground power receptacle,
- ground power receptacle relay.
1 2. LOCATION (Figure 1)
COMPONENT QTY AREA ACCESS DOOR REFERENCE
Ground power receptacle 1 210 216 24-40-00
Ground power receptacle relay 1 100 121 24-40-00
1 3. DESCRIPTION
A. Ground power receptacle
For startings by cold weather and for long time maintenance practices on the electrical and avionics equipment, the ground power receptacle permits the use of an external power source. The receptacle is located under the baggage compartment access door, near the anti-spin edge.
NOTE : If no avionics equipment is to be used or worked on, turn off the avionics power switches or open the circuit-breakers. If maintenance practices are required, use better a ground power source energized through a battery holder cart to prevent damage to the avionics equipment by transient voltage.
B. Ground power receptacle relay
Located on firewall at the level of starter and battery relays, the ground power receptacle relay ensures continuity between the external energy source, the battery and the various utilization circuits.
The ground power receptacle relay automatically disconnects the battery when the ground power receptacle is supplied. Therefore the battery cannot be charged without removing it from the aircraft.
1 4. OPERATION
Starting the engine with an auxiliary power source does not modify basic procedures - refer to Pilot's Operating Handbook, however :
Aircraft not equipped with "Radio Master" option Avionics equipment switches shall be turned off. Aircraft equipped with "Radio Master" option
Electrical power supply to radio COM and radio NAV systems is automatically interrupted during the engine start-up phase.
ACAB
Validity : OPTION C836 10M 24-40-00Page 1
(CA) OCT 02
The ground power receptacle system consists of a protection device against polarity switching. The aircraft shall be energized by the ground power source only if the ground power receptacle is correctly connected ; if not, the mains shall not be energized, thereby preventing any damage of electrical equipment.
I ACAB
Validity : OPTION C836 10M 24-40-00Page 2
(CA) DEC 98
14244000AAACWZ5000
External power - Identification and location of components
Figure 1
ACAB
Validity : OPTION C836 10M 24-40-00Page 3
(CA) OCT 02
PAGE INTENTIONALLY LEFT BLANK
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