CL_604-ELECTRICAL庞巴迪挑战者604电气

航空发表于 2010-5-14 23:50:52

CL_604-ELECTRICAL
 
**** Hidden Message *****

航空发表于 2010-5-15 08:33:01

Table of Contents For Training Purposes Only May 03 7-i P I LOT T R A I N I N G GU I D E ELECTRICAL Introduction .........................................................................................................................7-1 Alternating Current (AC) System ........................................................................................7-3 Description ....................................................................................................................7-3 Components and Operation..........................................................................................7-4 Integrated Drive Generators (IDGs) ........................................................................7-4 APU Generator........................................................................................................7-6 External AC Electrical Power ........................................................................................7-8 Description ....................................................................................................................7-8 Operation ......................................................................................................................7-8 AC Electrical Power Distribution ....................................................................................... 7-10 Description .................................................................................................................. 7-10 Components and Operation........................................................................................ 7-11 AC BUS 1 and AC BUS 2 ..................................................................................... 7-11 AC ESS (Essential) Bus........................................................................................ 7-13 AC Utility Buses .................................................................................................... 7-14 Air-Driven Generator (ADG).............................................................................................. 7-15 Description .................................................................................................................. 7-15 Components and Operation........................................................................................ 7-16 Air-Driven Generator ............................................................................................. 7-16 ADG Auto Deploy Control Unit.............................................................................. 7-17 ADG Manual Deploy Handle ................................................................................. 7-18 DC Electrical Power System ............................................................................................. 7-20 Description .................................................................................................................. 7-20 Components and Operation........................................................................................ 7-22 Transformer-Rectifier Units (TRUs) ...................................................................... 7-22 TRU Power Distribution System............................................................................ 7-22 Battery Power Distribution System........................................................................ 7-24 External DC Electrical Power ................................................................................ 7-25 Circuit Breakers........................................................................................................... 7-27 Description ............................................................................................................ 7-27 Controls and Indicators ..................................................................................................... 7-30 AC Electrical Power .................................................................................................... 7-30 Air-Driven Generator (ADG)........................................................................................ 7-31 DC Electrical Power .................................................................................................... 7-32 Circuit Breaker Panels ................................................................................................ 7-33 EICAS Synoptic Pages ............................................................................................... 7-37 AC Synoptic Page ................................................................................................. 7-37 DC Synoptic Page................................................................................................. 7-44 EICAS Messages........................................................................................................ 7-50 7-ii For Training Purposes Only May 03 ELECTRICAL P I LOT T R A I N I N G GU I D E Page Intentionally Left Blank List of Figures Graphic Title Figure For Training Purposes Only May 03 7-iii P I LOT T R A I N I N G GU I D E ELECTRICAL AC Electrical Power Sources ..............................................................................................7-1 DC Electrical Power Sources..............................................................................................7-2 AC Electrical System ..........................................................................................................7-3 GEN 1 and GEN 2 Power ...................................................................................................7-4 APU Power .........................................................................................................................7-5 External AC Receptacle......................................................................................................7-6 External AC Electrical Power ..............................................................................................7-7 EICAS AC Electrical Synoptic Page ...................................................................................7-8 AC BUS Automatic Transfer ...............................................................................................7-9 AC Essential Bus on Alternate Source ............................................................................. 7-10 AC Utility Bus Shedding.................................................................................................... 7-11 Air-Driven Generator (Wet ADG Shown) .......................................................................... 7-12 ADG Manual Deploy Handle and ADG Auto Deploy Control Panel.................................. 7-13 ADG Operation .................................................................................................................7-14 DC System Schematic ...................................................................................................... 7-15 EICAS DC Electrical Synoptic Page ................................................................................. 7-16 TRU 1 Failed and MAIN BUS TIE Closed......................................................................... 7-17 External DC Receptacle.................................................................................................... 7-18 External DC Power Connected ......................................................................................... 7-19 Circuit Breaker Panels (CBPs).......................................................................................... 7-20 Circuit Breaker Grid System ............................................................................................. 7-21 ELECTRICAL POWER Panel ........................................................................................... 7-22 Air-Driven Generator (ADG).............................................................................................. 7-23 ELECTRICAL POWER Panel ........................................................................................... 7-24 Circuit Breaker Panel 1 ..................................................................................................... 7-25 Circuit Breaker Panel 2 ..................................................................................................... 7-26 Circuit Breaker Panels 3 & 4............................................................................................. 7-27 Circuit Breaker Panel 5 ..................................................................................................... 7-28 AC Synoptic Page Color Coding - Integrated Drive Generators (1 of 2)........................... 7-29 AC Synoptic Page Color Coding - Integrated Drive Generators (2 of 2)........................... 7-30 AC Synoptic Page Color Coding - APU Generator (1 of 2)............................................... 7-31 AC Synoptic Page Color Coding - APU Generator (2 of 2)............................................... 7-32 AC Synoptic Page Color Coding - AC Electrical Power Distribution................................. 7-33 AC Synoptic Page Color Coding - External AC Electrical Power...................................... 7-34 ELECTRICAL 7-iv For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E AC Synoptic Page Color Coding - Air-Driven Generator .................................................. 7-35 DC Synoptic Page - TRU Power Distribution System (1 of 2) .......................................... 7-36 DC Synoptic Page - TRU Power Distribution System (2 of 2) .......................................... 7-37 DC Synoptic Page - Battery Power Distribution System (1 of 2) ...................................... 7-38 DC Synoptic Page - Battery Power Distribution System (2 of 2) ...................................... 7-39 DC Synoptic Page - DC Electrical Power Distribution (1 of 2) .......................................... 7-40 DC Synoptic Page - DC Electrical Power Distribution (2 of 2) .......................................... 7-41 ELECTRICAL For Training Purposes Only May 03 7-1 P I LOT T R A I N I N G GU I D E CHAPTER 7: ELECTRICAL Introduction The Challenger 604 primarily uses 115-volt AC power and also 28-volt DC electrical power. Engine-driven integrated drive generators (IDGs) supply the primary source of AC electrical power. A generator mounted on the Auxiliary Power Unit (APU) provides an alternate source of AC electrical power. In flight, if a total loss of AC power occurs, the air-driven generator (ADG) is deployed from the right side of the forward fuselage to provide an emergency source of AC electrical power. External AC electrical power is supplied through an electrical power receptacle located on the right side of the forward fuselage. Various aircraft systems and components require DC electrical power for operation. DC electrical power needs are primarily supplied by four Transformer Rectifier Units (TRU) mounted in the nose compartment. Two nickel-cadmium (NiCad) batteries, located in the aft equipment bay, store and provide a source of DC electrical power for normal and emergency operations. The aircraft is capable of accepting 28-volt DC external electrical power through a DC power receptacle installed on the rear fuselage below the right engine. Five circuit breaker panels provide power distribution. Four circuit breaker panels are located in the flight compartment and the fifth panel is in the aft equipment bay. Control and operation are accomplished through the ELECTRICAL POWER Panel located on the left side of the overhead panel. AC and DC electrical system information is provided on the EICAS. ELECTRICAL 7-2 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E AC Electrical Power Sources Figure 7-1 DC Electrical Power Sources Figure 7-2 Generator 2 P604_07_001 APU Generator Generator 1 Air-Driven Generator (ADG) External Power Transformer Rectifier Units Main Battery Charger APU Battery Main Battery APU Battery Charger External Power P604_07_004 ELECTRICAL For Training Purposes Only May 03 7-3 P I LOT T R A I N I N G GU I D E Alternating Current (AC) System Description Three AC generators provide AC power for the aircraft electrical systems. Two engine-driven generators power all AC buses during normal operations. An APU generator provides a source of AC electrical power when the aircraft is on the ground with the engines off, and during flight if both engine-driven generators become inoperative. AC Electrical System Figure 7-3 GEN 1 GCU 1 GLC1 GLC2 GTC1 GTC2 AC ESS BUS TX CONTACTOR UTILITY BUS CONTACTOR 1 UTILITY BUS CONTACTOR 2 ADG GEN ADG GCU ENG. 1 GEN 2 GCU 2 ENG. 2 APU EMERG AC TX CONTACTOR EXT. AC APU GCU APU GEN EXT PWR MON P604_07_002 NOTE: This schematic only displays AC power sources. Disregard the position of the GLCs and Generator Transfer Contactors (GTCs). AC UTILITY ADG BUS BUS 1 AC BUS 1 AC BUS 2 AC UTILITY BUS 2 AC ESS BUS ELECTRICAL 7-4 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E Components and Operation Integrated Drive Generators (IDGs) Two engine-driven IDGs supply 115-volt AC, 400-Hz, three-phase electrical power to the AC buses. The IDG consists of two subcomponents, a constant speed drive and an electrical generator. The generators are identified on the EICAS AC Electrical Synoptic page by the symbols GEN 1 and GEN 2 (see Figure 7-4). The nominal rating of each generator is 30 kilovolt-amperes (kVA) to an altitude of 35,000 feet MSL, then 25 kVA to 41,000 feet MSL. In the event of a single generator failure, the remaining generator is capable of supplying sufficient power for operation of the main systems. The generators are controlled by two-position GEN 1 or GEN 2 switches located on the ELECTRICAL POWER Panel. Selecting GEN 1 or GEN 2 switch to ON connects the respective generator to the main AC buses provided they are operating normally. Selecting the switches to OFF/RESET will disconnect the respective generator from the main AC buses. The OFF/RESET position can also be used to reset the generator control circuit when a fault occurs. Generator Control Unit Each IDG is controlled and monitored by its respective generator control unit (GCU). The GCUs provide protection and bus priority logic during normal and non-normal operations. The engine generator is tripped off and removed from the AC buses if any of the following conditions occur: • over- and undervoltage • over- and underfrequency • generator and bus overcurrent ELECTRICAL For Training Purposes Only May 03 7-5 P I LOT T R A I N I N G GU I D E GEN 1 and GEN 2 Power Figure 7-4 AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 GEN ESS BUS P604_07_028 4 115 400 KVA V HZ 4 115 400 KVA V HZ 0 0 0 KVA V HZ ELECTRICAL POWER BATT MASTER EXT. POWER APU GEN GEN 2 OFF/ RESET OFF/ RESET ON ON OFF ESS. POWER DC POWER AC ESS XFER MAIN BUS TIE AC POWER GEN 1 OFF/ RESET AVAIL IN USE IN USE ON AUTOXFER FAIL OFF FAIL OFF ALTN CLOSED ON AC DC ELECTRICAL 7-6 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E APU Generator The APU generator supplies 115-volt AC, 400-Hz, three-phase electrical power to the AC buses during ground operations with the engines off. The APU generator may also be used in flight as a backup power source to the AC buses following a failure of both engine generators. The APU generator is mounted on the APU generator adapter and is driven at a constant speed, maintaining its frequency output at 400 Hz. The APU generator is identified on the AC Electrical Synoptic page by the symbol GEN above the APU icon (see Figure 7-5). The nominal rating of the APU generator is 30 kVA from sea level up to the APU’s maximum operating altitude of 20,000 feet MSL. The two-position APU GEN switch located on the ELECTRICAL POWER Panel controls the APU generator. Selecting the APU GEN switch to ON connects the APU generator to the main AC buses, providing it is operating normally. Selecting the switch to OFF/RESET disconnects the APU generator from the main AC buses. The OFF/RESET position can also be used to reset the generator control circuit when a fault occurs. Use of the APU generator in flight is not permitted unless both main generators have failed or are off-line. Generator Control Unit The APU generator is controlled and monitored by the APU generator control unit (GCU). The APU GCU in conjunction with the engine GCUs provide protection and bus priority logic during normal and non-normal operations. The APU GENERATOR is tripped off and removed from the AC buses if any of the following conditions occur: • over- and undervoltage • over- and underfrequency • generator and bus overcurrent NOTE ELECTRICAL For Training Purposes Only May 03 7-7 P I LOT T R A I N I N G GU I D E APU Power Figure 7-5 P604_07_029 AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 0 0 0 GEN ESS BUS KVA V HZ 0 0 0 KVA V HZ 6 113 400 KVA V HZ ELECTRICAL POWER BATT MASTER EXT. POWER APU GEN GEN 2 OFF/ RESET OFF/ RESET ON ON OFF ESS. POWER DC POWER AC ESS XFER MAIN BUS TIE AC POWER GEN 1 OFF/ RESET AVAIL IN USE IN USE ON AUTOXFER FAIL OFF FAIL OFF ALTN CLOSED ON AC DC ELECTRICAL 7-8 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E External AC Electrical Power Description The aircraft is capable of being powered by an external AC power source when both engines and APU are off. External AC electrical is connected at a receptacle located on the forward right side of the fuselage. External AC Receptacle Figure 7-6 Operation External AC ground power is controlled by the EXT POWER switch/light located on the ELECTRICAL POWER Panel. When connected, the external AC ground power is checked by an external power monitor for proper voltage, frequency, and phase. When the external power is within limits, the green AVAIL annunciator on the EXT POWER switch/light illuminates (see Figure 7-7). When the EXT POWER switch/light is pressed with the AVAIL annunciator illuminated, external AC electrical power is connected to the aircraft main AC buses via the auxiliary power/external power contactor (AP/EPC). External AC ground power is identified on the AC Electrical Synoptic page by the symbol EXT AC. This symbol appears only if external AC power is connected to the aircraft (see Figure 7-7). P604_07_055 ELECTRICAL For Training Purposes Only May 03 7-9 P I LOT T R A I N I N G GU I D E External AC Electrical Power Figure 7-7 ELECTRICAL POWER BATT MASTER EXT. POWER APU GEN GEN 2 OFF/ RESET OFF/ RESET ON ON OFF ESS. POWER DC POWER AC ESS XFER MAIN BUS TIE AC POWER GEN 1 OFF/ RESET AVAIL IN USE IN USE ON AUTOXFER FAIL OFF FAIL OFF ALTN CLOSED ON AC DC P604_07_031 AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 0 0 0 GEN ESS BUS KVA V HZ 0 0 0 KVA V HZ 0 0 0 KVA V HZ EXT AC 116 400 V HZ EXTERNAL AC POWER SUPPLYING MAIN AC BUSES P604_07_030 AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 0 0 0 GEN ESS BUS KVA V HZ 0 0 0 KVA V HZ 0 0 0 KVA V HZ EXT AC 116 400 V HZ EXTERNAL AC POWER CONNECTED TO AIRCRAFT ELECTRICAL POWER BATT MASTER EXT. POWER APU GEN GEN 2 OFF/ RESET OFF/ RESET ON ON OFF ESS. POWER DC POWER AC ESS XFER MAIN BUS TIE AC POWER GEN 1 OFF/ RESET AVAIL IN USE IN USE ON AUTOXFER FAIL OFF FAIL OFF ALTN CLOSED ON AC DC ELECTRICAL 7-10 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E AC Electrical Power Distribution Description 115-volt AC electrical power from the aircraft generators and APU generator is distributed to five AC buses through circuit breaker panels. Monitoring of system status is done using the EICAS AC Electrical Synoptic page. The aircraft AC bus system consists of the following five buses: • AC BUS 1 (Main) • AC BUS 2 (Main) • AC ESS BUS (Essential) • AC UTILITY BUS 1 • AC UTILITY BUS 2 EICAS AC Electrical Synoptic Page Figure 7-8 AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 GEN ESS BUS P604_07_032 4 115 400 KVA V HZ 4 115 400 KVA V HZ 0 0 0 KVA V HZ AC UTILITY BUS 1 AC BUS 1 (Main) AC ESS BUS (Essential) AC UTILITY BUS 2 AC BUS 2 (Main) ELECTRICAL For Training Purposes Only Jan 04 7-11 P I LOT T R A I N I N G GU I D E Components and Operation AC BUS 1 and AC BUS 2 AC BUS 1 and AC BUS 2 are the main AC buses of the aircraft, and receive power from any of the three generators or from external AC power. AC BUS 1 normally supplies power to the AC ESS BUS and AC UTIL BUS 1. AC BUS 2 normally powers AC UTIL BUS 2. Bus Priority AC BUS 1 and AC BUS 2 are protected by a bus priority logic to ensure that the buses remain powered at all times. The generator control units (GCUs) determine the bus priority logic for AC BUS 1 and AC BUS 2 via the generator line contactors (GLCs) and generator transfer contactors (GTCs). The bus priority logic for AC BUS 1 and AC BUS 2 is as follows: • on-side engine-driven generator (example: AC BUS 1 powered by GEN 1) • APU generator • cross-side engine-driven generator (example: AC BUS 1 powered by GEN 2) • external AC Power According to the above priority logic, the GLCs and GTCs will automatically tie the main AC buses to any of the available AC power sources, to ensure the main AC buses remain powered at all times. AC BUS 1(2) Automatic Transfer (AUTOXFER) Switch/Lights The flight crew may manually inhibit the automatic bus transfer priority logic by pressing the appropriate AUTOXFER switch/light located on the ELECTRICAL POWER Panel. This prevents the corresponding AC BUS from being powered by any source except its on-side engine-driven generator. This may be used to isolate a main AC bus in the event of an electrical emergency (example: electrical smoke or fire). Selection of the AUTOXFER switch/light is indicated by illumination of the corresponding white OFF annunciator on the switch/light and the white AUTO XFER OFF icon on the AC Electrical Synoptic page (see Figure 7-9). Should a bus fault or generator overcurrent condition occur on a main AC bus, the automatic bus transfer priority logic will be inhibited, isolating the fault from the remaining AC electrical system. This condition is indicated by the AC 1(2) AUTOXFER caution EICAS message, illumination of the corresponding amber FAIL annunciator on the AUTOXFER switch/light, and the amber AUTO XFER FAIL icon on the AC Synoptic page (see Figure 7-9). ELECTRICAL 7-12 For Training Purposes Only Jan 04 P I LOT T R A I N I N G GU I D E AC BUS Automatic Transfer Figure 7-9 ELECTRICAL POWER BATT MASTER EXT. POWER APU GEN GEN 2 OFF/ RESET OFF/ RESET ON ON OFF ESS. POWER DC POWER AC ESS XFER MAIN BUS TIE AC POWER GEN 1 OFF/ RESET AVAIL IN USE IN USE ON AUTOXFER FAIL OFF FAIL OFF ALTN CLOSED ON AC DC P604_07_034 AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 GEN ESS BUS 4 115 400 KVA V HZ 0 0 0 KVA V HZ 0 0 0 KVA V HZ AUTO XFER FAIL SHED AC BUS 2 AUTOMATIC TRANSFER FAILURE ELECTRICAL POWER BATT MASTER EXT. POWER APU GEN GEN 2 OFF/ RESET OFF/ RESET ON ON OFF ESS. POWER DC POWER AC ESS XFER MAIN BUS TIE AC POWER GEN 1 OFF/ RESET AVAIL IN USE IN USE ON AUTOXFER FAIL OFF FAIL OFF ALTN CLOSED ON AC DC P604_07_033 AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 GEN ESS BUS 4 115 400 KVA V HZ 4 115 400 KVA V HZ 0 0 0 KVA V HZ AUTO XFER OFF AC BUS 2 AUTOXFER SWITCH/LIGHT SELECTED OFF ELECTRICAL For Training Purposes Only May 03 7-13 P I LOT T R A I N I N G GU I D E AC ESS (Essential) Bus The AC ESS BUS supplies power to the equipment essential for flight. It is normally powered by AC BUS 1, but may also be powered by AC BUS 2 or the ADG BUS. The AC ESS BUS supplies power to ESS TRU 1, which provides DC power to the DC ESS BUS and the BATT BUS. Refer to the ADG section in this chapter for information on the ADG BUS. AC ESS Bus Transfer If a loss of power on AC BUS 1 is sensed, the AC ESS BUS is automatically transferred to AC BUS 2. When an automatic transfer to AC BUS 2 occurs, the AC ESS XFER switch/light located on the ELECTRICAL POWER Panel illuminates and the AC ESS ALTN status EICAS message appears (see Figure 7-10). If the automatic transfer fails to occur, the AC ESS BUS can be manually transferred to AC BUS 2 by pressing the AC ESS XFER switch/light. AC Essential Bus on Alternate Source Figure 7-10 ELECTRICAL POWER BATT MASTER EXT. POWER APU GEN GEN 2 OFF/ RESET OFF/ RESET ON ON OFF ESS. POWER DC POWER AC ESS XFER MAIN BUS TIE AC POWER GEN 1 OFF/ RESET AVAIL IN USE IN USE ON AUTOXFER FAIL OFF FAIL OFF ALTN CLOSED ON AC DC P604_07_035 AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 GEN ESS BUS 2 115 400 KVA V HZ 4 115 400 KVA V HZ 0 0 0 KVA V HZ AUTO XFER FAIL ELECTRICAL 7-14 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E AC Utility Buses AC UTILITY BUS 1 and 2 receive power from AC BUS 1 and 2 respectively. The AC utility buses supply AC power to nonessential cabin equipment. Utility Bus Shedding During single-generator operation in flight, AC UTILITY BUS 1 and 2 are automatically load shed to reduce the electrical load on the remaining generator. During ground operations, AC UTILITY BUS 1 and 2 are load shed when a single generator (or external AC power only) is supplying AC power and the flaps are not retracted. Load shedding of AC UTILITY BUS 1 and 2 is indicated by the appearance of AC UTIL 1(2) OFF status EICAS messages and the SHED icons on the AC Electrical Synoptic page (see Figure 7-11). AC Utility Bus Shedding Figure 7-11 P604_07_036 AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 GEN ESS BUS 0 0 0 KVA V HZ 0 0 0 KVA V HZ 7 113 401 KVA V HZ AUTO XFER FAIL SHED SHED AC UTIL 2 OFF AC UTIL 1 OFF EICAS SECONDARY DISPLAY ELECTRICAL For Training Purposes Only Jan 04 7-15 P I LOT T R A I N I N G GU I D E Air-Driven Generator (ADG) Description The ADG provides 115-volt, 400-Hz, 15-kVA power to the AC ESS BUS and 3B hydraulic pump, in the event of a complete loss of AC power in flight. The ADG is located in the forward right fuselage beside the nose gear and is deployed automatically or manually. Once deployed, the ADG can only be restowed when the aircraft is on the ground (see Figure 7-12). Air-Driven Generator (Wet ADG Shown) Figure 7-12 ADG Ground Safety Lockpin UPLOCK ASSEMBLY Auto Release ( Squib Cartridge Solenoid) Wet ADG - / Dry ADG - P604_07_003 Manual Release Ejection Jack Assembly Manual Restowable Pump Assembly Air-Driven Generator Assembly Ejection Jack Assembly Manual Retraction Pump Assembly AIR - DRIVEN DRY GENERATOR (Aircraft 5408 and subsequent) AIR - DRIVEN WET GENERATOR (Aircraft 5301 to 5407) Air-Driven Generator Assembly ELECTRICAL 7-16 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E Components and Operation Air-Driven Generator The ADG consists of an AC generator mounted on a pivoted support leg and a variable-pitch two-bladed propeller that turns in the airstream. There are two versions of the ADG. Airplanes 5301 to 5407 On airplanes 5301 to 5407, constant speed of the generator is achieved by hydraulically controlling the propeller pitch angle. This ADG is commonly referred to as the “wet ADG”. Wet ADG operation is airspeed-limited (refer to the Airplane Flight Manual Limitations). On landing with the wet ADG deployed, use gentle deceleration to prevent the ADG from swinging forward and contacting the fuselage. Airplane 5408 and Subsequent On airplanes 5408 and subsequent, the constant speed of the ADG is achieved by using a counterweight system to control the propeller pitch angle. This ADG is commonly referred to as the “dry ADG”. ADG Generator Control Unit The ADG generator is controlled and monitored by the ADG generator control unit (GCU). The ADG GCU provides the following functions: • monitors and controls ADG voltage output • protects against overvoltage, overfrequency and underfrequency to the ADG BUS • provides a signal to the ADG Auto Deploy Control Unit to energize the HYD PUMP 3B Transfer Contactor, Emergency AC Transfer Contactor, and Emergency DC Transfer Contactor when the ADG voltage and frequency are within limits NOTE ELECTRICAL For Training Purposes Only May 03 7-17 P I LOT T R A I N I N G GU I D E ADG AUTO DEPLOY CONTROL Unit Located on the lower center pedestal, the ADG AUTO DEPLOY CONTROL Unit controls the automatic deployment of the ADG. Automatic deployment of the ADG occurs when: • both AC BUS 1 and AC BUS 2 become unpowered • the aircraft is in flight Another ADG deployment prerequisite is that one of the three main generators must be on line prior to both AC main buses going off (this prevents the ADG from deploying during ground maintenance tests with external power being connected and disconnected with the aircraft on jacks. The red EMER PWR ONLY warning EICAS message appears to indicate loss of all normal electrical power and ADG deployment. When the ADG unit is fully extended, the two-blade propeller is unlocked and rotates in the airstream. Once the ADG voltage and frequency are within normal limits, the AUTO DEPLOY CONTROL Unit energizes the appropriate transfer contactors, and allows the ADG to provide power to the AC ESS BUS and to hydraulic pump 3B via the ADG BUS. Airplanes 5301 to 5407 On airplanes 5301 to 5407, the ADG AUTO DEPLOY CONTROL Unit deploys the ADG by sending an electrical signal to fire the squib cartridge in the ADG uplock mechanism. Airplane 5408 and Subsequent On airplanes 5408 and subsequent, the ADG AUTO DEPLOY CONTROL Unit sends a signal to release the solenoid of the ADG uplock mechanism. ADG Manual Deploy Handle and ADG AUTO DEPLOY CONTROL Panel Figure 7-13 ADG PWR TXFR OVERRIDE UNIT ADG AUTO DEPLOY CONTROL LAMP TEST P604_07_041 ELECTRICAL 7-18 For Training Purposes Only Jan 04 P I LOT T R A I N I N G GU I D E PWR TXFR OVERRIDE With the ADG deployed, it may be possible to restore normal AC electrical power by resetting an engine-driven generator or by using the APU generator. If AC electrical power is restored, the PWR TXFR OVERRIDE switch (see Figure 7-13) should be selected to reset the three transfer contactors and regain normal AC distribution. This returns the AC ESS BUS to AC BUS 1 and the 3B hydraulic pump to normal operation. The ADG Manual Deploy Handle must be stowed to allow the transfer contactors to reset. ADG LAMP / UNIT Switch The ADG Auto Deploy Control Unit may be tested using the two-position ADG LAMP / UNIT switch located on the ADG AUTO DEPLOY CONTROL Panel. Selecting the switch to the UNIT position tests the continuity of the uplock circuit, the three transfer contactors, and the ADG AUTO DEPLOY CONTROL Unit internal logic circuitry. Both engine generators must be operating and AC BUS 1 and AC BUS 2 must be powered to ensure a proper test. Selecting the switch to the LAMP position checks the serviceability of the green TEST lamp only. ADG Manual Deploy Handle In the event of an auto-deploy failure, the ADG can be manually deployed using the ADG Manual Deploy Handle located on the lower center pedestal. Pulling the handle manually releases the uplock that allows the ADG to deploy. In addition, the Emergency AC Transfer Contactor and Emergency DC Transfer Contactor are energized immediately. In the event the ADG fails, operating the ADG Manual Deploy Handle enables the DC ESS BUS to be supplied by the BATT BUS through the Emergency DC Transfer Contactor. If the ADG is not operating properly and the airplane is on battery power only, then all electrical power may be lost after 30 minutes. Hydraulic pump 3B will be inoperative when on battery power. NOTE NOTE ELECTRICAL For Training Purposes Only May 03 7-19 P I LOT T R A I N I N G GU I D E Manual deployment of the ADG handle is also required for landing when the ADG is the only source of AC electrical power. This ensures that the DC ESS BUS remains powered by the BATT BUS throughout the landing rollout, when the ADG is no longer capable of generating AC power. ADG Operation Figure 7-14 AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 GEN ESS BUS P604_07_037 4 115 400 KVA V HZ 4 115 400 KVA V HZ 0 0 0 KVA V HZ AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 GEN 0 0 0 KVA V HZ 0 0 0 KVA V HZ 0 0 0 KVA V HZ AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 GEN 0 0 0 KVA V HZ 0 0 0 KVA V HZ 9 113 400 KVA V HZ AUTO XFER FAIL SHED SHED ADG ESS BUS 115 400 V HZ ADG 115 400 V HZ ESS BUS AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 GEN 0 0 0 KVA V HZ 0 0 0 KVA V HZ 10 113 400 KVA V HZ AUTO XFER FAIL SHED SHED ADG 115 400 V HZ ESS BUS 1. NORMAL OPERATION 2. EMER PWR ONLY – ADG DEPLOYED 3. APU GEN SELECTED ON 4. PWR TXFR OVERRIDE PRESSED ELECTRICAL 7-20 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E DC Electrical Power System Description Four transformer-rectifier units (TRUs), two NiCad batteries and an external DC power receptacle supply direct current (DC) power to the DC buses. The TRUs carry the majority of the DC electrical loads and the batteries provide emergency power inflight and allow the APU to be started on the ground. DC power is distributed to the DC buses directly from the TRUs or batteries, and from various contactors which provide alternate sources of power. Electrical power is supplied to the buses through the circuit breaker panels. DC System Schematic Figure 7-15 APU BATT EXT DC TRU 1 TRU 2 ESS TRU 2 ESS TRU 1 APU BATT CHGR FROM ADG DC TIE RELAY 1 DC TIE RELAY 2 DC ESS SOLID-STATE CONTACTOR APU BATT SOLID-STATE CONTACTOR EXTERNAL DC CONTACTOR EMERGENCY DC TX CONTACTOR MAIN BATT MAIN BATT SOLID STATE CONTACTOR MAIN BATT CHGR P604_07_005 NOTE: This schematic only displays DC power sources. Disregard the positions of all contactors and ties. DC UTILITY BUS 2 DC UTILITY BUS 1 DC BUS 1 DC BUS 2 DC ESS BUS BATT BUS EMERGENCY BUS APU BATT DIR BUS MAIN BATT DIR BUS AC BUS 1 AC BUS 2 AC ESS BUS ELECTRICAL For Training Purposes Only May 03 7-21 P I LOT T R A I N I N G GU I D E Monitoring of system status is done using the EICAS DC Electrical Synoptic page. The aircraft DC bus system consists of the following nine buses: • DC BUS 1 • DC BUS 2 • DC ESS (Essential) BUS • DC EMER (Emergency) BUS • BATT (Battery) BUS • DC UTIL (Utility) BUS 1 • DC UTIL (Utility) BUS 2 • MAIN BATTERY DIRECT BUS • APU BATTERY DIRECT BUS EICAS DC Electrical Synoptic Page Figure 7-16 P604_07_038 DC ELECTRICAL TRU 1 BUS 1 BUS 2 UTIL BUS 1 UTIL BUS 2 EMER BUS APU BATT DIR BUS MAIN BATT DIR BUS AC BUS 1 AC BUS 2 AC ESS BUS TIE ESS BUS BATT BUS 28 V 8 A TRU 2 28 V 13 A ESS TRU 2 28 V 24 A ESS TRU 1 28 V 24 A MAIN BATT 26 V 0 A APU BATT 27 V 0 A EXT DC 28 V 19 A DC BUS 1 DC BUS 2 DC UTIL (Utility) BUS 1 DC UTIL (Utility) BUS 2 DC ESS (Essential) BUS BATT (Battery) BUS APU BATTERY DIRECT BUS MAIN BATTERY DIRECT BUS DC EMER (Emergency) BUS ELECTRICAL 7-22 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E Components and Operation Transformer-Rectifier Units (TRUs) The normal sources of 28-volt DC electrical power for the DC system are the four TRUs. Each TRU converts 115-volt AC to 28-volt DC and supplies it to its respective DC buses. Each TRU is rated at 100 amps. The four TRUs are identified as: • TRU 1 • TRU 2 • ESS (Essential) TRU 1 • ESS (Essential) TRU 2 The TRUs supply the following buses: • TRU 1 normally supplies DC BUS 1 and DC UTIL BUS 1 • TRU 2 normally supplies DC BUS 2 and DC UTIL BUS 2 • ESS TRU 1 normally supplies DC ESS BUS and DC BATT BUS • ESS TRU 2 normally supplies DC ESS BUS and DC BATT BUS TRU Power Distribution System The TRU Power Distribution System supplies the following buses: DC BUS 1 and DC BUS 2 DC BUS 1 is supplied by TRU 1 and DC BUS 2 is supplied by TRU 2. If either TRU fails, both buses can be supplied by either TRU by selecting the MAIN BUS TIE switch/light on the ELECTRICAL POWER Panel (see Figure 7-17). DC ESS BUS The DC ESS BUS powers equipment essential for safe flight, and therefore, may be supplied by numerous DC sources to ensure redundancy of its power supply. Normally, ESS TRU 1 and ESS TRU 2 power the DC ESS BUS. In the event of a single ESS TRU failure, either ESS TRU is capable of sustaining the DC ESS BUS load. Should both ESS TRUs fail with the aircraft in flight, the APU BATT DIR BUS through the DC ESS solid-state contactor will power the DC ESS BUS. During ADG operation, the AC ESS BUS powers ESS TRU 1 which in turn powers the DC ESS BUS. The DC ESS BUS can also be powered by the APU and Main batteries through the Emergency DC Transfer Contactor. Refer to the ADG section of this chapter for additional information. ELECTRICAL For Training Purposes Only May 03 7-23 P I LOT T R A I N I N G GU I D E TRU 1 Failed and MAIN BUS TIE Closed Figure 7-17 BATT BUS The BATT BUS powers equipment essential for safe flight, and may be supplied by several DC sources to ensure redundancy. Normally, ESS TRU 1 and ESS TRU 2 power the BATT BUS when the main AC buses are powered. If the ESS TRUs are not operating (no AC power or ESS TRU failures), the BATT BUS will be powered by the APU BATT DIR BUS and MAIN BATT DIR BUS provided the BATT MASTER Switch is selected ON. The BATT MASTER Switch located on the ELECTRICAL POWER Panel controls the APU BATT and MAIN BATT contactors to supply the BATT BUS, as described above. The BATT BUS also supplies the DC EMER BUS. ELECTRICAL POWER BATT MASTER EXT. POWER APU GEN GEN 2 OFF/ RESET OFF/ RESET ON ON OFF ESS. POWER DC POWER AC ESS XFER MAIN BUS TIE AC POWER GEN 1 OFF/ RESET AVAIL IN USE IN USE ON AUTOXFER FAIL OFF FAIL OFF ALTN CLOSED ON AC DC P604_07_039 TRU 1 BUS 1 BUS 2 UTIL BUS 1 UTIL BUS 2 EMER BUS APU BATT DIR BUS MAIN BATT DIR BUS AC BUS 1 AC BUS 2 AC ESS BUS TIE ESS BUS BATT BUS – – V 0 A TRU 2 28 V 20 A ESS TRU 2 28 V 24 A ESS TRU 1 28 V 24 A MAIN BATT 26 V 0 A APU BATT 27 V 0 A EXT DC 28 V 19 A DC ELECTRICAL ELECTRICAL 7-24 For Training Purposes Only Jan 04 P I LOT T R A I N I N G GU I D E DC UTIL BUS 1 and DC UTIL BUS 2 The DC UTIL buses supply power to nonessential cabin equipment. TRU 1 and TRU 2 power DC UTILITY BUS 1 and 2 respectively. Whenever the MAIN BUS TIE switch/light is selected following a TRU 1 or 2 failure, the DC UTIL buses are load shed to reduce the DC electrical load. Battery Power Distribution System The Battery Power Distribution System represents a small portion of the aircraft’s total DC load. The batteries primarily provide the energy needed to start the APU, which can then be used to supply AC power to the aircraft. The batteries also supply emergency DC power in-flight should all AC power be lost and the ADG become inoperative. Two rechargeable nickel-cadmium (NiCad) batteries are installed in the aft equipment bay. The main battery is a 24-volt, 17-amp/hour battery. The APU battery is a 24-volt, 43-amp/hour battery. The batteries supply DC electrical power to the following buses: • MAIN BATT DIR BUS • APU BATT DIR BUS • DC EMER BUS • BATT BUS Battery Charging The main battery charger and APU battery charger are in a charging configuration at all times when the applicable main AC buses are powered: • AC BUS 1 for Main Battery Charger • AC BUS 2 for APU Battery Charger The battery chargers operate automatically in various modes based on battery temperatures. Should a battery or battery charger fault be detected, the respective battery charger will shut down. A MAIN (APU) BATT CHGR FAIL status EICAS message will appear and the CHGR OFF icon will be displayed on the DC Electrical Synoptic page to indicate a failure. ELECTRICAL For Training Purposes Only May 03 7-25 P I LOT T R A I N I N G GU I D E MAIN and APU BATT DIR BUSES These DC buses are continuously powered from the associated battery, regardless of the BATT MASTER switch position. The main battery is connected to the MAIN BATT DIR BUS and the APU battery is connected to the APU BATT DIR BUS. These buses provide power to the aircraft systems which primarily relate to ground service operation (refueling, service lights, etc.). The APU BATT DIR BUS also supplies the DC EMER BUS. DC Emergency Bus The DC EMER BUS provides power to the engine and APU fire extinguishers and the fuel and hydraulic shutoff valves. The bus is connected to the APU BATT DIR BUS and the BATT BUS and is continuously powered. BATT BUS Refer to the TRU distribution section of this chapter. External DC Electrical Power External DC ground power may be used to start the APU if the APU battery charge is low. The External DC receptacle is located at the rear of the aircraft near the right engine pylon (see Figure 7-18). External DC Receptacle Figure 7-18 P604_07_056 ELECTRICAL 7-26 For Training Purposes Only Jan 04 P I LOT T R A I N I N G GU I D E When connected, external DC ground power automatically supplies the APU BATT DIR BUS through the External DC contactor, and the BATT BUS when the BATT MASTER switch is selected ON. The DC EXTERNAL POWER white IN USE light on the ELECTRICAL POWER panel illuminates whenever DC external power is connected. External DC ground power is identified on the DC Electrical Synoptic page by the symbol EXT DC. This symbol appears only if DC external power is connected to the aircraft. External DC Power Connected Figure 7-19 ELECTRICAL POWER BATT MASTER EXT. POWER APU GEN GEN 2 OFF/ RESET OFF/ RESET ON ON OFF ESS. POWER DC POWER AC ESS XFER MAIN BUS TIE AC POWER GEN 1 OFF/ RESET AVAIL IN USE IN USE ON AUTOXFER FAIL OFF FAIL OFF ALTN CLOSED ON AC DC P604_07_040 DC ELECTRICAL TRU 1 BUS 1 BUS 2 UTIL BUS 1 UTIL BUS 2 EMER BUS APU BATT DIR BUS MAIN BATT DIR BUS AC BUS 1 AC BUS 2 AC ESS BUS TIE ESS BUS BATT BUS 0 V 0 A TRU 2 0 V 0 A ESS TRU 2 0 V 0 A ESS TRU 1 0 V 0 A MAIN BATT 24 V 18 A APU BATT 27 V 0 A EXT DC 28 V 19 A ELECTRICAL For Training Purposes Only May 03 7-27 P I LOT T R A I N I N G GU I D E Circuit Breakers Description Electrical power distribution is accomplished through five circuit breaker panels. Four circuit breaker panels are installed in the flight deck and the fifth panel is in the aft equipment bay. They are identified as follows (see Figure 7-20): • Circuit Breaker Panel 1 (CBP-1) • Circuit Breaker Panel 2 (CBP-2) • Circuit Breaker Panel 3 (CBP-3) • Circuit Breaker Panel 4 (CBP-4) • Circuit Breaker Panel 5 (CBP-5) Electrical equipment protection is provided by conventional thermal circuit breakers. When a circuit breaker is tripped, a white collar is exposed. Depending on airplane completion specification, circuit breakers may also be located in other parts of the airplane. Should a circuit breaker trip while the airplane is in flight, the circuit breaker should be allowed to cool for as long as possible before resetting. Do not attempt more than one reset of a circuit breaker. NOTE ELECTRICAL 7-28 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E Circuit Breaker Panels (CBPS) Figure 7-20 CBP-3 CBP-4 CBP-2 CBP-1 CBP-1 (LOWER) CBP-5 AC ESS BUS DC ESS BUS AC BUS 2 DC BUS 2 BATT BUS AC BUS 1 DC BUS 1 BATT BUS EMERGENCY MAIN BATT DIR BUS APU BATT DIR BUS P604_07_011 ELECTRICAL For Training Purposes Only May 03 7-29 P I LOT T R A I N I N G GU I D E Circuit Breaker Grid System A circuit breaker can be located, when called for in a procedure, by using the grid reference on the circuit breaker panel. For example, the “VOLTS & FREQ IND” circuit breaker location is identified as (3A13), and therefore found on panel CBP-3, row A, column 13 (see Figure 7-21). Circuit Breaker Grid System Figure 7-21 CBP-3 ESS TRU 1 STAB CH 2 HSTA ESS HYD PUMP SUPPLY VOLTS & FREQ IND AC ESS FEED L DET L PITOT PITOT STBY L AOA L STATIC R DET L HTR WIND CTR PNLS CB PNLS PLT PNLS O/H PNLS IRU 1 TCAS ICE DET 1 ENG IGN A IRU FAN 1 FDR PWR SURF POS IND L 26 VAC ESS XFMR A B C D 115VAC ESS BUS 115VAC ESS BUS 115VAC ESS BUS 26VAC ESS BUS 115VAC ESS BUS 115VAC ADG BUS B/LEAK HEATERS INTEG LTS 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 10 3 3 3 3 3 5 3 2 2 3 3 10 5 5 3 5 3 5 7.5 25 25 1 Row Circuit Breaker Panel Number Column P604_07_006 ELECTRICAL 7-30 For Training Purposes Only Jan 04 P I LOT T R A I N I N G GU I D E Controls and Indicators The overhead ELECTRICAL POWER Panel and the Air-Driven Generator (ADG) panel provide the system controls. The EICAS (AC Electrical and DC Electrical) Synoptic pages provide a pictorial representation of system status. The EICAS Primary and Secondary pages provide system caution and advisory messages respectively. Circuit Breaker Panel (CBP) diagrams are also located in this section. AC Electrical Power ELECTRICAL POWER Panel Figure 7-22 ELECTRICAL POWER BATT MASTER EXT. POWER APU GEN GEN 2 OFF/ RESET OFF/ RESET ON ON OFF ESS. POWER DC POWER AC ESS XFER MAIN BUS TIE AC POWER GEN 1 OFF/ RESET AVAIL IN USE IN USE ON AUTOXFER FAIL OFF FAIL OFF ALTN CLOSED ON AC DC External AC Power Switch/Light (alternate-action) Push AVAIL Light Illuminated IN USE Light Illuminated – Connects external AC power to appropriate main AC BUS(s) when the AVAIL light is illuminated. – Indicates that external AC power is connected and operating within limits. – Indicates external AC power is connected and supplying the appropriate main AC BUS(s). AC ESS XFER Switch/Light (alternate-action) Push ALTN Light Illuminated – Manually transfers source of power for AC ESS BUS from AC BUS 1 to AC BUS 2. – Indicates AC ESS BUS is being supplied from AC BUS 2. AC AUTOXFER Switch/Lights (alternate-action) Push OFF Light Illuminated FAIL Light Illuminated – Disables automatic bus tie operation for corresponding main AC BUS (left AC BUS 1, right AC BUS 2). – Indicates automatic bus tie operation has been manually disabled. – Indicates automatic bus tie operation has been automatically disabled due to a bus fault or generator overcurrent condition. P604_07_025 GEN 1 (2) Switch ON OFF/RESET – Connects applicable generator to appropriate main AC BUS(s) provided it is operating normally. Disconnects applicable generator from main AC BUS(s). Resets generator control circuit. APU GEN Switch ON OFF/RESET – Connects APU generator to appropriate main AC BUS(s) provided it is operating normally. : The APU GEN generator may not be selected ON in flight, unless both GEN 1 and GEN 2 are off-line or failed. NOTE Disconnects APU generator from main AC BUS(s). Resets generator control circuit. ELECTRICAL For Training Purposes Only May 03 7-31 P I LOT T R A I N I N G GU I D E Air-Driven Generator (ADG) Air-Driven Generator (ADG) Figure 7-23 ADG PWR TXFR OVERRIDE UNIT ADG AUTO DEPLOY CONTROL LAMP TEST P604_07_027 ADG Manual Deploy Handle Pull aft until latched: Manually releases ADG uplock mechanism to deploy the ADG. Immediately energizes the Emergency AC Transfer Contactor, Emergency DC Transfer Contactor and the Hydraulic Pump 3B Transfer Contactor. ADG LAMP-UNIT Test Switch LAMP UNIT: – Tests the ADG TEST LAMP. Tests continuity of the ADG uplock release circuit and of the Emergency AC, DC and, Hydraulic Pump 3B Transfer Contactors. Tests the auto-deploy control unit logic circuits. PWR TXFR OVERRIDE Switch Push – De-energizes the Emergency AC Transfer Contactor, Emergency DC Transfer Contactor and Hydraulic Pump 3B Transfer Contactor if power is restored to the main AC buses. : ADG Manual Deploy Handle must be stowed for all transfer contactors to de-energize. NOTE ADG TEST LAMP During LAMP Test During UNIT Test Illuminates steady. On the ground, illuminates after 2 seconds for 2 seconds. In-flight, illuminates after 5 seconds for 2 seconds. ELECTRICAL 7-32 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E DC Electrical Power ELECTRICAL POWER Panel Figure 7-24 ELECTRICAL POWER BATT MASTER EXT. POWER APU GEN GEN 2 OFF/ RESET OFF/ RESET ON ON OFF ESS. POWER DC POWER AC ESS XFER MAIN BUS TIE AC POWER GEN 1 OFF/ RESET AVAIL IN USE IN USE ON AUTOXFER FAIL OFF FAIL OFF ALTN CLOSED ON AC DC BATT MASTER Switch ON OFF – Connects the batteries (MAIN BATT DIR BUS and the APU BATT DIR BUS) to the BATT BUS. – Disconnects the batteries from the BATT BUS. MAIN BUS TIE Switch/Light (alternate-action) Push CLOSED Light Illuminated – Ties DC BUS 1 and DC BUS 2 together. – Indicates that both DC BUS 1 and DC BUS 2 have been tied together. : Both DC utility buses are load shed whenever the switch/light indicates CLOSED. NOTE P604_07_026 External DC Power Light Illuminated – Indicates external DC power is connected to the aircraft and is supplying the APU BATT DIR BUS. ELECTRICAL For Training Purposes Only May 03 7-33 P I LOT T R A I N I N G GU I D E Circuit Breaker Panels Circuit Breaker Panel 1 Figure 7-25 3 10 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 3 3 3 3 3 5 7.5 3 3 3 3 50 50 50 3 3 3 3 3 3 3 3 3 3 3 20 5 3 3 20 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 5 3 3 3 3 3 5 5 5 5 3 3 3 3 3 3 3 3 3 3 3 3 3 5 3 5 5 3 10 10 10 3 10 3 3 3 3 3 5 5 5 25 7.5 20 20 5 3 3 3 25 25 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5 5 6 6 6 6 7 7 7 7 8 8 8 8 9 9 9 9 10 10 10 10 11 11 11 11 12 12 12 12 13 13 13 13 14 14 14 14 15 15 15 15 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 WOW/ GEAR/ SPLR 1 DISP FAN CONT FLAP CONT 1 GND SPLR RUD TRIM NOSE STEER ANTI SKID CKPT HTR CONT A/ICE AUTO 1 14 ST B/AIR SOV L 14 ST B/AIR ISOL SOV HTR CONT L WSHLD B C D E F G H POWER MUST BE OFF BEFORE OPENING PANEL CBP-1 HYD PUMP 115 VAC BUS 1 115 VAC BUS 1 115 VAC BUS 1 115 VAC BUS 1 115 VAC UTILITY BUS 1 HEATERS 3B 2B TAT AUX AOA L WSHLD CKPT HTR TRU 1 IRU 3 IRU 3 GPWS FAN FLAP MOTOR 1 115VAC ESS FEED MAIN BATT CHGR ENG VIB MON PASS WARN SIGNS CKPT FAN ADG DEPLOY SENSE LDG/TAXI LTS L NOSE L WING NAV LTS PWR SENSE LIGHT LOGO GAL/LAV SUPPLY LINE HTRS FUEL PUMP PRIM XFER DISP FAN 28 VDC UTILITY BUS 1 28 VDC UTILITY BUS 1 PWR SENSE FEED FEED DC BUS 1 CONTROL TIE & UTIL TRU 1 SENSE UTIL BUS CONT PWR SENSE 28 VDC BUS 1 CKPT TEMP CONT AUTO HYD SYST AC PUMP CONT 2 FSCU PRIM FUEL XFER CONT FUEL DEFUEL SOV POS LIGHTS CHRT HLDR WING INSP CKPT FLOOR REAR A/COLL SELCAL L LDU PRIM DISPL SEC DISPL DME 1 AFIS RAD ALT 1 GPS 1 BRT/DIM PWR SUPP 2 3 28 VDC BUS 1 28 VDC BUS 1 EICAS IND 2 1 1 1 2 3 2 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 3 M J K L N P Q 1 1 2 3 4 5 6 7 8 9 10 11 12 2 4 28 VDC BUS 1 28 VDC BATTERY BUS 28 VDC BATTERY BUS 1 WEATHER RDR HF COMM 1 R/T CONT 1 CONT 2 TX/RX L IAPS AFCS 2 FMS 1 CPL ECU FAULT ANN START CONT L OIL PRESS TRANS ENG IGN A B ENG START R R EMERG BUS FEED FMS 1 BACKUP PWR FMS CDU 1 WOW/ GEAR/ SPLR 1 LH CH STALL PROT STICK PUSH FLAP TRIM IND ENG JET PIPE OVHT FIRE DETECTORS R ENG L ENG APU TEST FUEL L PUMP CONT GRAV L PUMP XFLOW FSCU CH 1 L L APU GCU 1 2 28 VDC BATTERY BUS 28 VDC BATTERY BUS 28 VDC BATTERY BUS ADC 2 STBY PA PLT MAP DOME STBY INSTR LIGHTS C/PLT MAP O/H PNLS RTU 1 STBY HORIZ EICAS RTU/CDU DIMMING IRU BATT 1 IRU PLT C/PLT BATT 3 VHF AUDIO COMM 1 FDR CONT L IAPS AFCS 1 MDC L IAPS FAN ESS AC XFER CONT 3 A 7.5 POWER MUST BE OFF BEFORE OPENING PANEL CBP-1 R S T TEST NORM OFF MAINT ADSHC MFD 1 MFD 2 FIRE EXT 2 R ENG R ENG R ENG FIRE EXT 1 APU FIRE EXT PWR SENSE FEED L ENG L ENG L ENG R ENG L ENG 28 VDC EMERGENCY BUS 28 VDC EMERGENCY BUS APU FUEL SOV HYD SOV 1 1 1 2 2 2 3 3 3 4 4 4 5 5 5 6 6 6 7 7 7 3 3 3 3 20 3 3 7.5 7.5 7.5 7.5 CIRCUIT BREAKER PANEL CBP - 1 CIRCUIT BREAKER PANEL CBP - 1 (LOWER) P604_07_013 ELECTRICAL 7-34 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E Circuit Breaker Panel 2 Figure 7-26 3 3 EFIS 2 PFD MFD CONT PNL CH A CH B BATT BUS PWR SENSE MAIN BATT DC ESS BATT BUS FEED 1 DC ESS BATT BUS DC ESS & BATT BUS CONTROL 28 VDC BUS 2 RCCB CONT APU BATT CONTACTOR LOGIC ESS TRUS WOW/ GEAR/ SPLR 2 DOOR WARN ADG DEPLOY CONT 28 VDC BATTERY BUS A/ICE VALVE A/ICE MAN 2 FEED 2 DC ESS R IAPS AFCS 2 FMS 2 BAG BAY SMOKE ADC 2 CLOCK 1 ESS TRU 1 SHUNT FUSES HYD SYST PUMP CONT 3B IND 3 APU FUEL PUMP CREW/PASS OXYGEN IRU BATT 2 STBY ALTM RAM AIR SOV FUEL X FEED CONT T/T DUMP SOV CONT T/T DUMP SOV DCU 1 DCU 2 1 2 CH A CH B CH A CONT PNL R LDU PRIM DISPL SEC DISPL BRT/DIM PWR SUPP 1 2 MLG BAY OVHT DET CABIN PRESS CONT AUTO MAN 28 VDC BATTERY BUS 28 VDC BUS 2 EICAS 28 VDC BATTERY BUS L ENG R ENG F5PA F6PA ESS TRU 2 SHUNT FUSES F11PA F12PA EICAS 3 CH B 1A SPARE M J K L N P Q 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9 10 11 12 50 50 50 50 20 10 10 3 3 3 3 3 3 3 3 3 3 3 3 3 5 3 3 3 3 3 3 3 3 3 0.5 0.5 0.5 1 2 3 4 5 6 7 8 9 10 11 12 5 5 1 2 3 4 5 6 7 8 9 10 10 3 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 1 2 3 4 5 6 7 8 9 10 11 12 26 VAC BUS 2 115 VAC UTILITY BUS 2 STAB CH 1 HSTA 26VAC XFMR ICE DET 2 CABIN FAN ADG DEPLOY SENSE INTEG LTS C/PLT PNLS LDG/TAXI LTS POWER SENSE LINE HTRS DRAIN GAL/LAV SUPPLY TANK SURF POS IND R FUEL PUMP PRIM XFER WOW/ GEAR/ SPLR 2 FLAP CONT 2 GND SPLR AIL TRIM NOSE STEER ANTI SKID STAB CH 1 HSTCU R AIR COND CONT A/ICE AUTO 2 10 ST B/AIR SOVR 14 ST B/AIR SOVR HYD SYST 28 VDC BUS 2 AC PUMP CONT 1 IND 2 AC PUMP CONT 3A R FUEL PUMP CONT R FUEL PUMP SEC FUEL XFER CONT BRAKE PRESS IND LIGHTS BEACON ADS HTR R CONT HTR CONT R WSHLD R WIND LIGHTS WING A/COLL DME 2 ADF 2 RAD ALT 2 VHF NAV 2 RTU 2 GPS 2 FMS CDU 2 XPDR 2 LIGHTING SENSOR VHF COMM 2 115 VAC BUS 2 R NOSE R WING 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D E F G H POWER MUST BE OFF BEFORE OPENING PANEL CBP-2 HYD PUMP 115 VAC BUS 2 HEATERS 3A 1B R WIND R AOA R PITOT R STATIC R WSHLD ESS TRU 2 115 VAC BUS 2 TRU 2 IRU 2 FLAP MOTOR 2 115VAC ESS FEED IRU FAN 2 115 VAC BUS 2 APU BATT CHGR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 28 VDC UTILITY BUS 1 PWR TX/RX CPL SENSE FEED HF COMM2 FEED DC BUS 2 CONTROL TIE & UTIL TRU 2 SENSE UTIL BUS CONT PWR SENSE 28 VDC BUS 2 CABIN TEMP CONT MAN AUTO LO LIM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 28 VDC BUS 2 10 7.5 2 7.5 7.5 7.5 7.5 3 3 3 3 3 3 5 7.5 10 10 50 50 50 3 3 3 3 3 3 3 3 3 3 3 5 5 5 5 3 20 3 3 3 3 3 3 3 3 3 5 7.5 3 3 3 3 7.5 3 3 3 3 3 3 3 3 5 5 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 7.5 7.5 2 3 3 3 25 25 20 20 10 3 5 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 10 5 25 3 3 3 P604_07_014 ELECTRICAL For Training Purposes Only May 03 7-35 P I LOT T R A I N I N G GU I D E Circuit Breaker Panels 3 & 4 Figure 7-27 ESS TRU 1 STAB CH 2 HSTA ESS HYD PUMP SUPPLY VOLTS & FREQ IND AC ESS FEED L DET L PITOT PITOT STBY L AOA L STATIC R DET L HTR WIND CTR PNLS CB PNLS PLT PNLS O/H PNLS IRU 1 TCAS ICE DET 1 ENG IGN A IRU FAN 1 FDR PWR SURF POS IND L 26 VAC ESS XFMR A B C D 115VAC ESS BUS 115VAC ESS BUS 115VAC ESS BUS 26VAC ESS BUS 115VAC ESS BUS 115VAC ADG BUS B/LEAK HEATERS INTEG LTS 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 10 3 3 3 3 3 5 5 5 2 2 3 3 10 5 5 3 5 3 5 7.5 25 25 1 ESS TRU'S SENSE PWR SENSE AUTO STOW THRUST REV 1 2 1 2 1 2 SOV SOV CONT FSCU CH 2 ADS HTR L CONT T/T XFER LIGHTS EMERG FLOOD DC ESS BUS A B C 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 DC ESS BUS DC ESS BUS WARN CONT CPAM/ EMER DEPRESS R OIL PRESS TRANS FMS DATA LOAD STAB CH 2 HSTCU L AIR COND CONT A/ICE MAN 1 10 ST B/AIR ISOL B/LEAK TEST HTR CONT L WIND DOOR EFIS 1 PFD MFD CONT PNL EFIS CRT DIMMING STALL PROT R CH ADC 1 CLOCK 2 CONT LO LIMIT CONT MAN B/AIR SOV L VHF COMM 3 CKPT TEMP EICAS DCU 1 CH A DCU 1 CH B 3 3 7.5 3 3 3 3 3 3 3 3 3 3 3 3 5 3 3 3 3 10 3 3 3 3 10 3 25 10 5 5 5 7.5 7.5 5 1 CIRCUIT BREAKER PANEL CBP-3 CIRCUIT BREAKER PANEL CBP-4 CBP-3 D 1 2 3 4 5 6 7 8 9 10 11 12 13 DC ESS BUS R IAPS AFCS 1 XPDR 1 AUDIO PLT C/PLT FMS CDU 3 ADF 1 VHF NAV CVR 1 R IAPS FAN 5 3 7.5 3 5 3 3 5 P604_07_015 CBP-4 ELECTRICAL 7-36 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E Circuit Breaker Panel 5 Figure 7-28 5 3 3 50 50 5 A B 28VDC APU BATT DIRECT BUS 28VDC MAIN BATT DIRECT BUS CBP-5 ESS/ EMERG BUS FEED OIL BYPASS IND APU BATT CONT ENG OIL POWER FSCU L/R AUX SOVS FUEL DEFUEL T/T SOVS PANEL AUTO MAN ADG BATT BUS EXT AC PWR CONT ENG IGN B MAIN BATT CONT APR DCU 2/3 WATER SYST. EXT SERV BOARD SERV AC ESS PWR CONT MAIN BATT CHGR OP APU BATT CHGR OP LTS 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 5 5 5 5 5 3 3 3 3 3 3 7. 5 20 50 10 P604_07_016 ELECTRICAL For Training Purposes Only May 03 7-37 P I LOT T R A I N I N G GU I D E EICAS Synoptic Pages AC Synoptic Page AC Synoptic Page Color Coding - Integrated Drive Generators (1 of 2) Figure 7-29 AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 GEN ESS BUS 4 115 400 KVA V HZ 4 115 400 KVA V HZ 0 0 0 KVA V HZ P604_07_042 Description Symbol Condition Engine Outline Generator 1, 2 Outline Generator 1, 2 Output Flow Lines (Lower) Engine off Engine running and ready to load Invalid data Generator on-line Generator off with engine running Both respective generator and engine are off Invalid data Generator is on Generator is off GEN 1 GEN 2 GEN 1 GEN 2 GEN 1 GEN 2 GEN 1 GEN 2 Generator 2 Output Flow Line (Lower) Generator 2 Output Flow Line (Upper) Generator 2 Frequency Readout Generator 1 Frequency Readout Generator 2 Voltage Readout Generator 1 Voltage Readout Generator 2 Load Readout Generator 1 Load Readout Generator 1 Output Flow Line (Lower) Generator 1 Output Flow Line (Upper) ELECTRICAL 7-38 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E AC Synoptic Page Color Coding - Integrated Drive Generators (2 of 2) Figure 7-30 P604_07_043 Description Symbol Condition Generator 1, 2 Load Readout Generator 1, 2 Voltage Readout Generator 1, 2 Frequency Readout Generator 1, 2 Output Flow Lines (Upper) Generator is loaded Generator is overloaded Generator is not on-line Invalid data Voltage between 100 and 125 VAC Voltage less than 100 VAC or more than 125 VAC Invalid data Frequency between 375 and 425 Hz Frequency less than 375 Hz or more than 425 Hz Invalid data Generator line contactor at generator position Generator line contactor at tie position 4 36 0 - - 115 94 - - - 400 429 - - - KVA KVA KVA KVA V V V HZ HZ HZ ELECTRICAL For Training Purposes Only May 03 7-39 P I LOT T R A I N I N G GU I D E AC Synoptic Page Color Coding - APU Generator (1 of 2) Figure 7-31 AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 0 0 0 GEN ESS BUS KVA V HZ 0 0 0 KVA V HZ 6 113 400 KVA V HZ P604_07_044 Description Symbol Condition APU Outline APU off APU running and ready to load Invalid data APU Generator Outline APU Generator Output Flow Line (Lower) Generator on-line Generator off with APU running Both respective generator and APU are off Invalid data Generator is on Generator is off GEN GEN GEN GEN APU Generator Output Flow Line (Lower) APU Generator Output Flow Lines (Upper) APU Generator Frequency Readout APU Generator Voltage Readout APU Generator Load Readout APU APU APU ELECTRICAL 7-40 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E AC Synoptic Page Color Coding - APU Generator (2 of 2) Figure 7-32 P604_07_045 Description Symbol Condition APU Generator Load Readout APU Generator Voltage Readout APU Generator Frequency Readout APU Generator Output Flow Lines (Upper) Generator is loaded Generator is overloaded Generator is not on-line Invalid data Voltage between 100 and 125 VAC Voltage less than 100 VAC or more than 125 VAC Invalid data Frequency between 375 and 425 Hz Frequency less than 375 Hz or more than 425 Hz Invalid data Generator line contactor at generator position Generator line contactor at tie position 6 36 0 - - 113 94 - - - 400 429 - - - KVA KVA KVA KVA V V V HZ HZ HZ ELECTRICAL For Training Purposes Only Jan 04 7-41 P I LOT T R A I N I N G GU I D E AC Synoptic Page Color Coding - AC Electrical Power Distribution Figure 7-33 P604_07_047 Description Symbol Condition Bus powered AC BUS 1, 2 Bus Bar Outline Bus not powered Invalid data ESS BUS Bus Bar Outline Bus powered UTIL BUS 1, 2 Bus Bar Outline AUTO XFER OFF Icon AUTO XFER FAIL Icon SHED Icon Invalid data Bus inoperative Bus powered Bus not powered (shed) Invalid data Displayed when AUTO XFER switch/light is manually selected Indicates that the corresponding automatic bus transfer has failed Displayed when AC UTIL BUS 1 and 2 are load shed BUS 1 BUS 1 BUS 1 BUS 2 BUS 2 BUS 2 ESS BUS ESS BUS ESS BUS UTIL BUS 1 UTIL BUS 1 UTIL BUS 1 UTIL BUS 2 UTIL BUS 2 UTIL BUS 2 AUTO XFER OFF AUTO XFER FAIL SHED AC ELECTRICAL BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 1 UTIL BUS 2 GEN 4 115 400 KVA V HZ 4 115 400 KVA V HZ 0 0 0 KVA V HZ AUTO XFER OFF ESS BUS BUS 2 GEN 2 UTIL BUS 2 4 115 400 KVA V HZ AUTO XFER OFF BUS 2 GEN 2 UTIL BUS 2 0 0 0 KVA V HZ AUTO XFER FAIL SHED ELECTRICAL 7-42 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E AC Synoptic Page Color Coding - External AC Electrical Power Figure 7-34 P604_07_046 Description Symbol Condition External AC Outline Displayed when external AC power is connected (voltage greater than 10 VAC and frequency greater than 50 Hz) External AC Input Outline External AC Voltage Readout External AC Frequency Readout AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 0 0 0 GEN ESS BUS KVA V HZ 0 0 0 KVA V HZ 0 0 0 KVA V HZ EXT AC EXT AC 116 400 V HZ External AC Input Outline External AC power is available (displayed only when external AC is between 106 to 124 VAC) External AC power is in use EXT AC EXT AC External AC Voltage Readout External AC Frequency Readout Voltage between 106 and 124 VAC Voltage less than 106 VAC or more than 124 VAC Frequency between 370 and 430 Hz Frequency less than 370 Hz or more than 430 Hz Invalid data 116 102 400 365 - - - V V HZ HZ HZ ELECTRICAL For Training Purposes Only May 03 7-43 P I LOT T R A I N I N G GU I D E AC Synoptic Page Color Coding - Air-Driven Generator Figure 7-35 AC ELECTRICAL UTIL BUS 1 BUS 2 GEN 2 GEN 1 APU BUS 1 UTIL BUS 2 GEN 0 0 0 KVA V HZ 0 0 0 KVA V HZ 0 0 0 KVA V HZ ADG ESS BUS 115 400 V HZ P604_07_048 Description Symbol Condition ADG Outline Displayed when external AC power is connected (voltage greater than 10 VAC and frequency greater than 50 Hz) ADG Voltage ADG Input Outline Readout ADG Frequency Readout ADG Input Outline ADG power is available (displayed only when external AC is between 106 to 124 VAC) ADG ADG power is in use ADG Voltage Readout ADG Frequency Readout Voltage between 106 and 124 VAC Voltage less than 106 VAC or more than 124 VAC Frequency between 370 and 430 Hz Frequency less than 370 Hz or more than 430 Hz Invalid data 115 100 400 435 - - - V V HZ HZ HZ ADG ADG ELECTRICAL 7-44 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E DC Synoptic Page DC Synoptic Page - TRU Power Distribution System (1 of 2) Figure 7-36 DC ELECTRICAL TRU 1 BUS 1 BUS 2 UTIL BUS 1 UTIL BUS 2 EMER BUS APU BATT DIR BUS MAIN BATT DIR BUS AC BUS 1 AC BUS 2 AC ESS BUS TIE ESS BUS BATT BUS 28 V 8 A TRU 2 28 V 13 A ESS TRU 2 28 V 24 A ESS TRU 1 28 V 24 A MAIN BATT 26 V 0 A APU BATT 27 V 0 A EXT DC 28 V 19 A P604_07_049 Description Symbol Condition AC BUS to TRU Flow Lines TRU 1 and TRU 2 Outline Respective AC BUS is powering TRU No AC power to TRU TRU voltage is 18 VDC or greater TRU voltage is less than 18 VDC Invalid data AC BUS to TRU Flow Lines TRU Voltage Readouts TRU Load Readouts TRU 1 TRU 2 TRU 1 TRU 2 TRU 1 TRU 2 Essential TRU 1 and TRU 2 Outline TRU voltage is 18 VDC or greater and load is greater than 3 amps TRU voltage is less than 18 VDC or load is less than 3 amps Invalid data ESS TRU 1 ESS TRU 2 ESS TRU 1 ESS TRU 2 ESS TRU 1 ESS TRU 2 V V V V V V A A A A A A V V V V V V A A A A A A 28 0 - - 28 0 - - 28 0 - - 28 0 - - 8 0 - - 24 0 - - 13 0 - - 24 0 - - ELECTRICAL For Training Purposes Only May 03 7-45 P I LOT T R A I N I N G GU I D E DC Synoptic Page - TRU Power Distribution System (2 of 2) Figure 7-37 P604_07_050 Description Symbol Condition TRU Voltage Readouts TRU Load Readouts Voltage is between 22 and 29 VDC Voltage is less than 22 VDC or more than 29 VDC Invalid data Load is between 3 and 99 amps Load is less than 3 amps or more than 99 amps Invalid data 28 18 - - 8 0 - - V V V A A A ELECTRICAL 7-46 For Training Purposes Only Jan 04 P I LOT T R A I N I N G GU I D E DC Synoptic Page - Battery Power Distribution System (1 of 2) Figure 7-38 DC ELECTRICAL TRU 1 BUS 1 BUS 2 UTIL BUS 1 UTIL BUS 2 EMER BUS EMER BUS APU BATT DIR BUS MAIN BATT DIR BUS MAIN BATT DIR BUS AC BUS 1 AC BUS 2 AC ESS BUS TIE ESS BUS BATT BUS 28 V 8 A TRU 2 28 V 13 A ESS TRU 2 28 V 24 A ESS TRU 1 28 V 24 A MAIN BATT 26 V 4 A APU BATT 27 V 4 A EXT DC 28 V 19 A P604_07_051 Description Symbol Condition Main Battery Voltage Readout APU Battery Voltage Readout EXT DC IN USE Main Battery Load Readout APU Battery Load Readout MAIN Battery Outline Battery voltage is equal to or greater than 18 VDC Battery voltage is less than 18 VDC Invalid data BATT OFF Main battery is less than 18 VDC BATT OFF CHGR FAIL CHGR FAIL Main battery is not charging or Main charger has failed APU battery is less than 18 VDC APU battery is not charging or APU charger has failed MAIN BATT MAIN BATT MAIN BATT V V V A A A MAIN BATT 26 V 0 A APU BATT 27 V 0 A EXT DC 28 V 19 A APU BATT DIR BUS MAIN BATT MAIN BATT 15 V 24 V 7 A 0 A APU BATT APU BATT BATT OFF BATT OFF CHGR FAIL CHGR FAIL 17 V 24 V 9 A 0 A 26 15 - - 0 7 - - APU Battery Outline Battery voltage is equal to or greater than 18 VDC and EXT DC is not in use Battery voltage is less than 18 VDC and EXT DC is not in use EXT DC is in use Note: APU BATT voltage and amperage go blank Invalid data APU BATT APU BATT APU BATT APU BATT V V V A A A 27 17 - - 0 9 - - ELECTRICAL For Training Purposes Only May 03 7-47 P I LOT T R A I N I N G GU I D E DC Synoptic Page - Battery Power Distribution System (2 of 2) Figure 7-39 P604_07_052 Description Symbol Condition MAIN and APU Battery Voltage Readouts MAIN and APU Battery Load Readouts Voltage is between 18 and 32 VDC Voltage is less than 18 VDC or greater than 32 VDC Invalid data Battery is equal or greater than 12 VDC or load is greater than 0 amps Battery is less than 12 VDC and load is 0 amps Invalid data 26 10 - - 8 0 - - V V V A A A EXT DC Outline EXT DC voltage is less than 18 VDC EXT DC voltage is equal or greater than 18 VDC EXT DC V A EXT DC V A 28 16 19 5 ELECTRICAL 7-48 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E DC Synoptic Page - DC Electrical Power Distribution (1 of 2) Figure 7-40 DC ELECTRICAL TRU 1 BUS 1 BUS 2 UTIL BUS 1 UTIL BUS 2 EMER BUS APU BATT DIR BUS MAIN BATT DIR BUS AC BUS 1 AC BUS 2 AC ESS BUS TIE ESS BUS BATT BUS 28 V 8 A TRU 2 28 V 13 A ESS TRU 2 28 V 24 A ESS TRU 1 28 V 24 A MAIN BATT 26 V 0 A APU BATT 27 V 0 A EXT DC 28 V 19 A P604_07_053 Description Symbol Condition Bus Input Flow Lines DC BUS 1, 2 Bus Bar Outline Bus powered Bus not powered Invalid data UTIL BUS 1, 2 Bus Bar Outline BUS 1 BUS 1 BUS 1 BUS 2 BUS 2 BUS 2 Bus powered Bus not powered Invalid data UTIL BUS 1 UTIL BUS 1 UTIL BUS 1 UTIL BUS 2 UTIL BUS 2 UTIL BUS 2 BUS 1 BUS 2 UTIL BUS 1 UTIL BUS 2 TIE MAIN BUS TIE CLOSED Bus Input Flow Lines Respective TRU/battery is on-line and output is 18 VDC or greater Respective TRU/battery is on-line and output is less than 18 VDC or no supply is being provided to respective bus ELECTRICAL For Training Purposes Only May 03 7-49 P I LOT T R A I N I N G GU I D E DC Synoptic Page - DC Electrical Power Distribution (2 of 2) Figure 7-41 Description Symbol Condition P604_07_054 APU BATT DIR BUS Bus Bar Outline Battery voltage is greater than 18 VDC, BATT MASTER switch ON, and EXT DC not in use Battery voltage is less than 18 VDC, BATT MASTER switch ON, and EXT DC not in use APU BATT DIR BUS APU BATT DIR BUS MAIN BATT DIR BUS Bus Bar Outline Invalid data Battery voltage is greater than 18 VDC and BATT MASTER switch ON Battery voltage is less than 18 VDC and BATT MASTER switch ON Invalid data MAIN BATT DIR BUS MAIN BATT DIR BUS MAIN BATT DIR BUS APU BATT DIR BUS ESS BUS and BATT BUS Bus Bar Outline Bus powered Bus not powered Invalid data ESS BUS ESS BUS ESS BUS BATT BUS BATT BUS BATT BUS ELECTRICAL 7-50 For Training Purposes Only May 03 P I LOT T R A I N I N G GU I D E EICAS Messages MESSAGE MEANING AURAL WARNING (IF ANY) EMER POWER ONLY ADG is supplying the AC essential bus, and no power is available from AC BUS 1 or 2. TRIPLE ATTENSON AC 1 AUTOXFER Respective automatic AC bus tie function has been inhibited because of an overcurrent AC 2 AUTOXFER condition on the respective AC bus. AC BUS 1 Respective AC bus is unpowered. AC BUS 2 AC ESS BUS AC essential bus is unpowered. APU BATTERY OFF APU battery is less than 18 VDC. APU GEN OFF APU generator is off-line with the APU running. APU GEN OVLD Load on the APU generator exceeds 34.5 kVA. BATTERY BUS Battery bus is unpowered. DC BUS 1 Respective DC bus is unpowered. DC BUS 2 DC EMER BUS DC emergency bus is unpowered. DC ESS BUS DC essential bus is unpowered. GEN 1 OFF Respective generator is OFF. GEN 2 OFF GEN 1 OVLD Load on respective generator exceeds 34.5 kVA. GEN 2 OVLD MAIN BATTERY OFF Main battery is less than 18 VDC. AC ESS ALTN AC essential bus is powered by AC BUS 2. AC UTIL 1 OFF Respective AC utility bus is unpowered. AC UTIL 2 OFF APU BATT CHGR FAIL APU battery is not charging or APU charger has failed. ESS TRU 1 FAIL Respective essential transformer-rectifier unit output is less than 18 VDC. ESS TRU 2 FAIL MAIN BATT CHGR FAIL Main battery is not charging or main battery charger has failed. EICAS Messages Table 7-1

页: [1]

航空论坛_航空翻译_民航英语翻译_飞行翻译's Archiver

CL_604-ELECTRICAL庞巴迪挑战者604电气