AC GENERATION - DESCRIPTION AND OPERATION

** ON A/C NOT FOR ALL

1. General
The AC generation consists of:

two Integrated Drive Generators (IDG) (Ref. AMM D/O 24-21-00-00),
a main generation corresponding to the two IDG channels and to the transfer circuit (Ref. AMM D/O 24-22-00-00),
an auxiliary generation corresponding to the APU generator and its channel (Ref. AMM D/O 24-23-00-00),
an emergency generation corresponding to the constant speed motor/generator, its associated GCU and its channel (Ref. AMM D/O 24-24-00-00),
the essential generation switching (Ref. AMM D/O 24-25-00-00),
the control circuits for galley and sheddable busbars supply (Ref. AMM D/O 24-26-00-00),
the monitoring and indicating circuits for the cockpit.

** ON A/C NOT FOR ALL

2. Component Location

Main Components - Component Location ** ON A/C NOT FOR ALL

Main Components - Component Location

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FIN I FUNCTIONAL DESIGNATION I PANELIZONEIACCESS I ATA

I I I I DOOR I REF.

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5XB HOLDER-FUSE 105VU 126 822 24-28-00

5XB1 FUSE-AC STAT INV BUS SPLY 105VU 126 822 24-28-00

FIN	FUNCTIONAL DESIGNATION	PANEL	ZONE	ATA REF
** ON A/C ALL
2XA	P/BSW-ELEC/GALLEY	35VU	210	24-26-00
2XB	CNTOR-STAT INV	105VU	126	24-28-55
3XB	STAT INV		126	24-28-51
3XC	CNTOR-AC ESS BUS SWITCHING	106VU	125	24-25-55
5XB	HOLDER-AC STAT INV BUS SPLY FUSE	105VU	126	24-28-00
11XC	P/BSW-ELEC/AC ESS FEED	35VU	210	24-25-00
1XE	CONTROL UNIT-CSM/G		125	24-24-34
2XE	GLC-EMER	106VU	125	24-24-55
8XE	CSM/G		148	24-24-51
14XE	ANN-EMER ELEC PWR/RAT/&/EMER GEN	21VU	211	24-24-00
15XE	CNTOR-AC ESS BUS SWITCHING	106VU	125	24-24-55
23XE	P/BSW-EMER ELEC PWR/EMER GEN TEST	21VU	211	24-24-00
24XE	P/BSW-EMER ELEC PWR/MAN ON	21VU	211	24-24-00
** ON A/C NOT FOR ALL
1XS	GCU-APU	91VU	121	24-23-34
** ON A/C ALL
2XS	P/BSW-ELEC/APU GEN	35VU	210	24-23-00
3XS	GLC-APU	120VU	212	24-23-55
** ON A/C NOT FOR ALL
8XS	GEN-APU		310	24-23-51
** ON A/C NOT FOR ALL
8XS	GEN-APU		316	24-23-51
** ON A/C ALL
42XS	CT-AC, APU GEN	120VU	212	24-23-17
5XT	P/BSW-ELEC/IDG 1	35VU	210	24-21-00
6XT	P/BSW-ELEC/IDG 2	35VU	210	24-21-00
1XU1	GCU-1	91VU	121	24-22-34
1XU2	GCU-2	91VU	121	24-22-34
3XU1	P/BSW-ELEC/GEN 1	35VU	210	24-21-00
3XU2	P/BSW-ELEC/GEN 2	35VU	210	24-21-00
9XU1	GLC-1	120VU	212	24-22-55
9XU2	GLC-2	120VU	212	24-22-55
11XU1	BTC-1	120VU	212	24-22-55
11XU2	BTC-2	120VU	212	24-22-55
13XU	P/BSW-EMER ELEC PWR/GEN1 LINE	21VU	211	24-21-00
** ON A/C NOT FOR ALL
22XU1	EGIU-1	95VU	121	24-22-33
22XU2	EGIU-2	96VU	122	24-22-33
** ON A/C ALL
41XU1	CT-AC, 1		131	24-22-17
41XU2	CT-AC, 2		132	24-22-17
** ON A/C NOT FOR ALL
42XU1	CT-AC, 1	120VU	212	24-22-17
42XU2	CT-AC, 2	120VU	212	24-22-17
42XU3	CT-AC, 1	120VU	212	24-22-17
42XU4	CT-AC, 2	120VU	212	24-22-17
50XU1	SENSOR-TDC AC, 1	103VU	126	24-22-18
50XU2	SENSOR-TDC AC, 2	103VU	126	24-22-18
** ON A/C ALL
4000XU	IDG		435	24-21-51
** ON A/C NOT FOR ALL
24XG	GAPCU	92VU	122	24-41-34
** ON A/C NOT FOR ALL
51XU1	CT		212	24-22-17
51XU2	CT		212	24-22-17

A. Spare Fuse

Spare Fuse - Component Location

If fuse 5XB1 melts, you can replace it by a spare 80A fuse which is on the left side panel, in the cockpit.

[Rev.10 from 2021] 2026.03.31 23:19:24 UTC