T-6B Electrical System. Created: 24 Aug 2015 Updated: 30 Aug 2015 T6BDriver.com

Transcription

1 T-6B Electrical System Created: 24 Aug 2015 Updated: 30 Aug 2015 T6BDriver.com

2 Objectives Identify power sources of electrical system Understand electrical distribution within system Identify location and understand operation of circuit breaker panels (Utilize electrical system schematic while reviewing this slideshow)

3 References T-6B NATOPS Manual Section 1 Electrical Power Supply System /erator tery Auxiliary tery External Power Tie Section 8, Chapter 4 Visual Communications Section 5 Figure 5-1 Instrument Markings tery/ Limitations erator Limitations

4 IAC #1 PMU Boost Pump Ignition Ldg Gr Cont Flap Cont Prop Sys Ail/El/Rud Trim Min 23.5v t Start tery BUS Hot Tie Avionics Master Clock Chip Detect OBOGS FDR Mx t BUS TIE BUS ELT Emer Flaps Ram Air Valve /erator Air Cond TAD Spd Brk NWS Fuel Bal Fire Det #2 AOA/Pitot/TAT HT Electrical System Overview System mainly a DC system System power supplied by /erator tery allows for stored power and engine starts Auxiliary tery utilized as emergency source of power Aux tery Aux Electric power distributed by numerous electrical bus & avionics bus (separated by battery or generator side) BFI COM 2 Fire Det #1 Aux CTR MFD Avi Avi IAC #2 ADC IRS COM 1 TCAS RAD ALT DME XPDR Ability to isolate generator side from battery side through use of Tie CTR MFD Avi Avi Volts

5 Power Sources (/erator) Dual use system as starter or generator 28V/300amp /erator Location Left side of engine accessory compartment Cooled by air intake duct routed from left side of engine cowl Tie Primary aircraft power erator Control Unit (GCU) Located in rear cockpit, under panel immediately aft of OBOGS regulator Keeps generator output within system limits Aux /erator /erator Air Intake Duct

6 Power Sources (/erator) Tie /erator tery charging erator needs to supply a minimum of 25V to charge battery Tie must be (closed) to allow charging Auxiliary tery charging ly generator powers which in-turn charges Aux Tie must be (closed) to allow charging Aux

7 Power Sources (/erator) Controls & Indicators Right Forward Panel switch and Reset button (both cockpits) Metal flap for turning off & together Magnetic switch Selecting switch in one cockpit will de-energize/turn switch off in other cockpit Reset button resets generator when generator malfunctions Tie /erator Information sent to by Displays system volts and amps in environmental section Positive amps = battery charging Color codes for normal/caution/exceedance A CAS warning illuminates when generator inoperative Aux Limits (notify mx if outside) If generator voltage is continuously below 25V battery power is degraded and land as soon as practical erator erator Reset Button Amps/Volts Indications Volts

8 Power Sources (tery) 24V/42amp, lead-acid battery Min 23.5v t Start tery Hot Located in left side of engine accessory compartment Provides power for engine starts Tie /erator Provides power to electrical system when generator fails Capable of powering entire system (except air conditioning) 30 min of power with Tie (generator side de-energized) tery charging Accomplished by generator or external power erator needs to supply a minimum of 25V to charge battery Tie must be (closed) to allow charging by generator Aux tery Volts

9 Power Sources (tery) Min 23.5v t Start tery Hot /erator Controls & Indicators Right Forward Panel switch for power application (both cockpits) Metal flap for turning off & together Magnetic switch Selecting switch in one cockpit will de-energize/turn switch off in other cockpit Tie Displays system volts and amps in environmental section Positive amps = battery charging Color codes for normal/caution/exceedance Limits Do not connect external power below 22.0V 23.5V minimum for engine start using battery start Aux tery Amps/Volts Indications Volts

10 Power Sources (Auxiliary tery) 24V/5amp Min 23.5v t Start Located in left avionic compartment (left E-bay) tery Hot CB on tery CB Panel (front cockpit left side) Aux will not charge if CB popped Tie /erator When generator & battery fail, provides power to: Backup Flight Instruments (BFI) Com 2 (standby VHF) Fire detection loop #1 Provides 30 minutes of power Auxiliary tery charging ly generator powers which in-turn charges Aux Tie must be (closed) to allow charging Aux tery CB Panel Aux Aux Volts Aux tery Aux CB

11 Power Sources (Auxiliary tery) Min 23.5v t Start tery Hot Controls & Indicators Right Forward Panel AUX switch for power application Front cockpit only Tie /erator System Test Panel Front cockpit only Tests aux battery power level Hold switch for a minimum of 5 seconds ensuring light remains illuminated Aux tery Aux tery Aux Aux Aux tery Test Light Volts Aux tery Test

12 Power Sources (External Power) Min 23.5v t Start tery Hot Located on left side, below left avionics bay door Controlled by switch (must be on & minimum of 22V) /erator Connects power to for distribution to electrical system Tie Internal protection for over/under voltage (automatically disconnects from system) External power visual signal Aux tery Aux External Ground Power Receptacle Aux Volts

13 Power Distribution (Basic Theory) Min 23.5v t Start tery Hot /erator Electrical Bar Main way to mass distribute electricity in a system Physically a bus is a metal bar Place various systems on one or numerous electrical bus for ease of isolation or electrical loading Tie Circuit Breaker (CB) Placed between electrical bus and equipment wired to bus Prevents to much current (amps) from damaging equipment Number on CB indicates max amperage at which CB will pop Electrical Bar CB popped CB not popped Aux tery Aux Aux Volts

14 Power Distribution (Circuit Breaker Panels) Min 23.5v t Start tery Hot /erator Tie erator CB Panel Aux tery Aux Aux tery CB Panel Volts

15 Power Distribution (Hot tery ) Min 23.5v t Start tery Hot Clock Chip Detect OBOGS FDR Mx t ELT Emer Flaps Ram Air Valve /erator has power anytime the tery is connected and has voltage Items on the bus are considered essential to always have power Circuit breakers in left side of accessory compartment above tery Tie Aux tery Hot CB Aux Aux Volts

16 Power Distribution (Forward erator ) Min 23.5v t Start tery Hot Clock Chip Detect OBOGS FDR Mx t ELT Emer Flaps Ram Air Valve Forward Powered when switch placed Powers various systems (air conditioning being highest power consumption) A BUS CAS warning illuminates when inoperative Tie BUS TIE BUS /erator Air Cond TAD Spd Brk NWS Fuel Bal Fire Det #2 AOA/Pitot/TAT HT Tie on right forward switch panel (front cockpit only) Allows erator to power battery bus side of electrical system position closes relay A BUS TIE CAS caution illuminates when Tie is open or inoperative erator & tery are isolated from each other /Aux will not be charged Aux tery Aux Aux Volts Tie

17 Power Distribution (Forward tery ) IAC #1 PMU Boost Pump Ignition Aux tery Aux Ldg Gr Cont Flap Cont Prop Sys Ail/El/Rud Trim Min 23.5v t Start tery BUS Hot Tie Clock Chip Detect OBOGS FDR Mx t BUS TIE BUS ELT Emer Flaps Ram Air Valve /erator Air Cond TAD Spd Brk NWS Fuel Bal Fire Det #2 AOA/Pitot/TAT HT Forward tery ly powered by erator thru Tie Can also be powered by tery (if erator failure) Powers some important but basic systems Start up: IAC #1/ (to get display) & (radios) Eng Start: /Boost Pump/Ignition/PMU/ Flight: Landing Gear Control/Flap Control/Prop System/Trim erator charges Aux via the erator or tery powers Aux via the A BUS CAS warning illuminates when inoperative or when bus voltage drops below 11.8V Auxiliary tery Critical items for continued flight during emergencies Backup Flight Instruments (BFI) Com 2 (standby VHF) Fire detection loop #1 CB section labeled STANBY on tery CB Panel to isolate bus items & Aux ly powered by erator or tery via the Powered by Aux in emergency & inoperative AUX switch 30 min of power (time dependent on amount of radio transmissions) CB Panel BFI COM 2 Fire Det #1 Aux Volts Aux Items

18 Power Distribution ( erator & tery ) Min 23.5v t Start tery Hot Clock Chip Detect OBOGS FDR Mx t ELT Emer Flaps Ram Air Valve /erator erator Powered by CB on CB Panel Can isolate aft bus from front cockpit if single-pilot CB Panel Tie BUS TIE IAC #1 PMU Boost Pump Ignition Aux tery Aux Ldg Gr Cont Flap Cont Prop Sys Ail/El/Rud Trim BUS BUS Air Cond TAD Spd Brk NWS Fuel Bal Fire Det #2 AOA/Pitot/TAT HT tery Powered by CB on CB Panel Powers & for rear cockpit Can isolate aft bus from front cockpit if single-pilot CB Panel CB BFI COM 2 Fire Det #1 Aux Volts CB

19 Power Distribution (Avionics) Min 23.5v t Start tery Hot Tie Clock Chip Detect OBOGS FDR Mx t BUS TIE ELT Emer Flaps Ram Air Valve /erator Avionics Master On front right switch panel (front cockpit only) De-energizes avionics relays (relays close) allowing power to avionics buses powers Avi powers Avi Circuit Breaker On CB Panel If CB pops, relays de-energized and close, turning on avionics regardless of switch position IAC #1 PMU Boost Pump Ignition Ldg Gr Cont Flap Cont Prop Sys Ail/El/Rud Trim BUS Avionics Master BUS Air Cond TAD Spd Brk NWS Fuel Bal Fire Det #2 AOA/Pitot/TAT HT Aux tery Aux CB Panel BFI COM 2 Fire Det #1 Aux Avi Avi Gn Avi Master CB Volts Avionics Master

20 Power Distribution (Forward Avi erator ) IAC #1 PMU Boost Pump Ignition Ldg Gr Cont Flap Cont Prop Sys Ail/El/Rud Trim Min 23.5v t Start tery BUS Hot Tie Avionics Master Clock Chip Detect OBOGS FDR Mx t BUS TIE BUS ELT Emer Flaps Ram Air Valve /erator Air Cond TAD Spd Brk NWS Fuel Bal Fire Det #2 AOA/Pitot/TAT HT Powered by Powers important avionics items critical for instrument flight Circuit Breakers CBs on CB Panel Individual CBs for items One CB for entire bus isolation Aux tery Aux BFI COM 2 Fire Det #1 Aux Avi IAC #2 ADC IRS COM 1 TCAS RAD ALT DME XPDR CB Panel Avi CB Volts Avi (individual items)

21 Power Distribution ( Avi erator ) Min 23.5v t Start tery Hot Tie Clock Chip Detect OBOGS FDR Mx t BUS TIE ELT Emer Flaps Ram Air Valve /erator Powered by Avi Powers in aft cockpit Circuit Breakers CB on CB Panel Can isolate aft bus from front cockpit if single-pilot IAC #1 PMU Boost Pump Ignition Ldg Gr Cont Flap Cont Prop Sys Ail/El/Rud Trim BUS Avionics Master BUS Air Cond TAD Spd Brk NWS Fuel Bal Fire Det #2 AOA/Pitot/TAT HT Aux tery Aux CB Panel BFI COM 2 Fire Det #1 Aux Avi IAC #2 ADC IRS COM 1 TCAS RAD ALT DME XPDR Avi Avi CB Volts

22 Power Distribution (Forward Avi tery ) IAC #1 PMU Boost Pump Ignition Ldg Gr Cont Flap Cont Prop Sys Ail/El/Rud Trim Min 23.5v t Start tery BUS Hot Tie Avionics Master Clock Chip Detect OBOGS FDR Mx t BUS TIE BUS ELT Emer Flaps Ram Air Valve /erator Air Cond TAD Spd Brk NWS Fuel Bal Fire Det #2 AOA/Pitot/TAT HT Powered by Powers Ctr MFD in front cockpit Circuit Breakers CBs on CB Panel Individual CBs for item One CB for entire bus isolation Aux tery Aux CB Panel BFI COM 2 Fire Det #1 Aux CTR MFD Avi Avi IAC #2 ADC IRS COM 1 TCAS RAD ALT DME XPDR Avi Volts Avi (individual items) Avi CB

23 Power Distribution ( Avi tery ) Min 23.5v t Start tery Hot Tie Clock Chip Detect OBOGS FDR Mx t BUS TIE ELT Emer Flaps Ram Air Valve /erator Powered by Avi Powers Ctr MFD in aft cockpit Circuit Breakers CB on CB Panel Can isolate aft bus from front cockpit if single-pilot IAC #1 PMU Boost Pump Ignition Ldg Gr Cont Flap Cont Prop Sys Ail/El/Rud Trim BUS Avionics Master BUS Air Cond TAD Spd Brk NWS Fuel Bal Fire Det #2 AOA/Pitot/TAT HT Aux tery Aux CB Panel BFI COM 2 Fire Det #1 Aux CTR MFD Avi Avi IAC #2 ADC IRS COM 1 TCAS RAD ALT DME XPDR CTR MFD Avi Avi Volts Avi CB

24 Power Distribution (Circuit Breaker Review) Aircraft made to fly single pilot from front cockpit so need the ability to isolate various equipment and buses from front cockpit Min 23.5v t Start tery Hot Clock Chip Detect OBOGS FDR Mx t ELT Emer Flaps Ram Air Valve /erator tery CB Panel has: (individual item CBs) ( CB) Aux (individual item CBs) Aux ( CB) Avi ( CB & individual item CBs) Avi ( CB) CB Panel Tie BUS TIE IAC #1 PMU Boost Pump Ignition Aux tery Aux Ldg Gr Cont Flap Cont Prop Sys Ail/El/Rud Trim BUS Avionics Master BUS Air Cond TAD Spd Brk NWS Fuel Bal Fire Det #2 AOA/Pitot/TAT HT erator CB Panel has: (individual item CBs) ( CB) Avi ( CB & individual item CBs) Avi ( CB) CB Panel BFI COM 2 Fire Det #1 Aux CTR MFD Avi Avi IAC #2 ADC IRS COM 1 TCAS RAD ALT DME XPDR CTR MFD Avi Avi Volts

25 Min 23.5v t Start tery Hot Clock Chip Detect OBOGS FDR Mx t ELT Emer Flaps Ram Air Valve /erator Conclusion Tie BUS TIE Identified power sources of electrical system IAC #1 PMU Boost Pump Ignition Ldg Gr Cont Flap Cont Prop Sys Ail/El/Rud Trim BUS Avionics Master BUS Air Cond TAD Spd Brk NWS Fuel Bal Fire Det #2 AOA/Pitot/TAT HT Discussed basic electrical distribution within system Identified and discussed location and operation of circuit breakers Aux tery Aux BFI COM 2 Fire Det #1 Aux CTR MFD Avi Avi IAC #2 ADC IRS COM 1 TCAS RAD ALT DME XPDR CTR MFD Avi Avi Abnormal Electrical Scenarios located in Procedures Section/EPs Volts