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BUS TIE BREAKER 1 115 VAC APU GENERATOR BREAKER ENGINE GENERATOR 2 115 VAC GENERATOR BREAKER 2 INVERTER 28 VDC HOT BATTERY BUS 115 VAC 400 Hz GROUND APU GENERATOR BUS TIE BREAKER 2 APU STARTER EXTERNAL POWER + DC CROSS BUS TIE RELAY 115 VAC GALLEY BUS C 115 VAC GALLEY BUS D 115 VAC MAIN BUS 1 115 VAC GROUND SERVICE BUS 1 TRANSFORMER/ RECTIFIER UNIT 1 115 VAC TRANSFER BUS 1 ENGINE GENERATOR 1 115 VAC GENERATOR BREAKER 1 IFE/PASS SEAT POWER 1 115 VAC STANDBY BUS CAB/UTIL LOAD SHED RELAY GROUND SERVICE RELAY 28 VAC TRANSFER BUS 1 IFE/PASS LOAD SHED RELAY TRANSFORMER GROUND POWER CONNECT BUS TRANSFER 115 VAC TRANSFER BUS 2 28 VAC GROUND SERVICE BUS 1 28 VDC STANDBY BUS 28 VDC BUS 1 28 VDC BUS 2 TRANSFORMER/ RECTIFIER UNIT 3 TRANSFORMER/ RECTIFIER UNIT 2 - SWITCHED HOT BATTERY BUS 28 VAC TRANSFER BUS 1 TRANSFORMER 28 VDC GROUND SERVICE BUS 28 VDC BATTERY BUS STANDBY POWER RELAY (NORMAL) STANDBY POWER RELAY (NORMAL) MAIN BATTERY CHARGER 115 VAC 400 Hz 115 VAC GALLEY BUS A 115 VAC GALLEY BUS B 115 VAC MAIN BUS 2 115 VAC GROUND SERVICE BUS 1 IFE/PASS SEAT POWER 2 CAB/UTIL LOAD SHED RELAY GROUND SERVICE RELAY IFE/PASS LOAD SHED RELAY 28 VAC GROUND SERVICE BUS 1 APU STARTER CONTROL UNIT ISFD BATTERY CHARGER ISFD GROUND SERVICE RELAY BATTERY BUS RELAY (NORMAL) IFE/PASS LOAD SHED RELAY TRU3 TRANSFER RELAY MAIN AIRCRAFT BATTERY NiCd SWITCHED HOT BATTERY BUS RELAY BATTERY BUS ALTERNATE RELAY 28 VAC STANDBY BUS TRANSFORMER 24 VDC (22-30 V) GEN 1 ON OFF OFF ON GEN 2 APU GEN APU GRD PWR OFF ON GRD POWER AVAILABLE BUS TRANS O F F A U T O GROUND SERVICE BAT OFF ON DRIVE DRIVE TRANSFER BUS OFF TRANSFER BUS OFF TR UNIT BAT DISCHARGE SOURCE OFF GEN OFF BUS SOURCE OFF GEN OFF BUS STANDBY PWR OFF STANDBY PWR OFF BAT OFF AUTO STANDBY POWER NOT OFFICIAL TRAINING NOTES 28 VDC 737 NG ELECTRICAL SYSTEM SOURCE OFF OFF ON CAB/UTIL OFF ON IFE/PASS SEAT + AUTO + AUTO 3-PHASE 3-PHASE 3-PHASE 3-PHASE SOURCE OFF GEN OFF BUS NOT FOR OPERATIONAL USE A3

intel737 - CHED HOT B ELECTRICAL SYSTEM.pdf · 2017. 5. 9. · generator breaker engine generator 2 115 vac tor genera breaker 2 inverter t b28 vdc ho attery bus 115 vac 400 hz ground

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  • BUS TIEBREAKER 1

    115 VAC

    APU GENERATOR BREAKER

    ENGINE

    GENERATOR

    2

    115 VAC

    GENERATOR BREAKER 2

    INVERTER

    28 VDC HOT BATTERY BUS

    115 VAC

    400 Hz

    GROUND

    APU

    GENERATOR

    BUS TIEBREAKER 2

    APU

    STARTER

    EXTERNAL POWER

    +

    DC CROSS BUS TIE RELAY

    115 VAC GALLEY BUS C

    115 VAC GALLEY BUS D

    115 VAC MAIN BUS 1

    115 VAC GROUND SERVICE BUS 1

    TRANSFORMER/

    RECTIFIER UNIT 1

    115 VAC TRANSFER BUS 1

    ENGINE

    GENERATOR

    1

    115 VAC

    GENERATOR BREAKER 1

    IFE/PASS SEAT POWER 1

    115 VAC STANDBY BUS

    CAB/UTIL LOAD SHED

    RELAY

    GROUNDSERVICE

    RELAY

    28 VAC TRANSFER BUS 1

    IFE/PASS LOAD SHED RELAY

    TRANSFORMER

    GROUND POWER CONNECT

    BUS TRANSFER 115 VAC TRANSFER BUS 2

    28 VAC GROUND SERVICE BUS 1

    28 VDC STANDBY BUS

    28 VDC BUS 1 28 VDC BUS 2

    TRANSFORMER/

    RECTIFIER UNIT 3

    TRANSFORMER/

    RECTIFIER UNIT 2

    -

    SWITCHED HOT BATTERY BUS

    28 VAC TRANSFER BUS 1

    TRANSFORMER

    28 VDC GROUND SERVICE BUS

    28 VDC BATTERY BUS

    STANDBY POWERRELAY

    (NORMAL)

    STANDBY POWERRELAY

    (NORMAL)MAIN

    BATTERY

    CHARGER

    115 VAC

    400 Hz

    115 VAC GALLEY BUS A

    115 VAC GALLEY BUS B

    115 VAC MAIN BUS 2

    115 VAC GROUND SERVICE BUS 1

    IFE/PASS SEAT POWER 2

    CAB/UTIL LOAD SHED RELAY GROUNDSERVICE

    RELAY

    IFE/PASS LOAD SHED RELAY28 VAC GROUND SERVICE BUS 1

    APU

    STARTER

    CONTROL

    UNIT

    ISFD

    BATTERY

    CHARGER

    ISFD

    GROUNDSERVICE

    RELAY

    BATTERY BUS RELAY(NORMAL)

    IFE/PASS LOAD SHED RELAY

    TRU3 TRANSFER RELAY

    MAIN

    AIRCRAFT

    BATTERY

    NiCd

    SWITCHED HOT BATTERY BUS RELAY

    BATTERY BUS ALTERNATE RELAY

    28 VAC STANDBY BUS

    TRANSFORMER

    24 VDC (22-30 V)

    GEN 1ON

    OFF OFF

    ONGEN 2

    APU GENAPU

    GRDPWROFF

    ON

    GRD POWERAVAILABLE

    BUS TRANS

    OFF

    AUTO

    GROUNDSERVICE

    BAT

    OFF

    ON

    DRIVE DRIVE

    TRANSFERBUS OFF

    TRANSFERBUS OFF

    TR UNIT

    BATDISCHARGE

    SOURCEOFF

    GEN OFFBUS

    SOURCEOFF

    GEN OFFBUS

    STANDBYPWR OFF

    STANDBYPWR OFF

    BAT OFF AUTO

    STANDBY POWER

    NOT OFFICIAL TRAINING NOTES

    28 VDC

    737 NG

    ELECTRICAL SYSTEM

    SOURCEOFF

    OFF

    ONCAB/UTIL

    OFF

    ONIFE/PASS

    SEAT

    + AUTO

    + AUTO

    3-PHASE 3-PHASE

    3-PHASE

    3-PHASE

    SOURCEOFF

    GEN OFFBUS

    NOT FOR OPERATIONAL USE

    A3