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BUS, T115 CURRENT DIFFERENTIAL PROTECTION APU TIE 24-33-01 
POWER TIE BUS, T116 CURRENT DIFFERENTIAL PROTECTION EXTERNAL 24-23-01 
CURRENT GROUND POWER, T122TRANSFORMER - (REF 31-01-32, FIG. 101) 24-23-01 
CURRENT DIFFERENTIAL PROTECTION RIGHT GENERATOR #1, T107 24-23-01 
CURRENT DIFFERENTIAL PROTECTION RIGHT TIE BUS, T113  24-23-01 
TRANSFORMER - (REF 31-01-31, FIG. 101) CURRENT RIGHT OVERLAP, T128 24-23-01 
CURRENT DIFFERENTIAL TRANSFORMER LEFT GENERATOR #1, T105 24-23-01 
CURRENT DIFFERENTIAL PROTECTION LEFT TIE BUS, T112 24-23-01 
CURRENT LEFT OVERLAP, T127TRANSFORMER - (REF 31-01-06, FIG. 101) 24-23-01 
CURRENT DIFFERENTIAL PROTECTION LEFT GENERATOR #2, T106 24-23-01 
LEFT GENERATOR CONTROL, M144 RIGHT GENERATOR CONTROL, M146 BUS POWER CONTROL, M116 APU GENERATOR CONTROL, M143 UNIT - (REF 24-22-00, FIG. 101) UNIT - (REF 24-41-00, FIG. 101) GENERATOR #2, T108 CURRENT DIFFERENTIAL PROTECTION RIGHT  24-23-01

AC Power Fault Sensing - Component Index
Figure 101

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FAULT ISOLATION/MAINT MANUAL

P31 PANEL

MAIN EQUIPMENT CENTER

FLIGHT COMPARTMENT

AC Power Fault Sensing - Component Location
Figure 102

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MAINTENANCE MANUAL

 CURRENT TRANSFORMER ASSEMBLY - REMOVAL/INSTALLATION
___________________________________________________
 1.  General
_______
 A.  This procedure has two tasks. The first task removes the current transformer assembly from the airplane. The second task installs the current transformer assembly on the airplane.
 TASK 24-23-01-024-001
 2.  Remove Current Transformer Assembly
___________________________________
 A.  References
 (1)  
AMM 24-22-00/201, Electrical Power - Control

 (2)  
AMM 27-61-00/201, Spoiler/Speedbrake Control System

 B.  Access
 (1)  
Location Zones
 212 Flight Compartment (RH Side)
 119/120 Main Equipment Center

 (2)  
Access Panels
 119BL Main Equipment Center Panel

 

 C.  Prepare for Removal
 S 864-004
 WARNING: REMOVE ELECTRICAL POWER BEFORE REMOVING OR INSTALLING
_______ COMPONENTS LOCATED IN MAIN POWER CENTERS. HIGH VOLTAGES PRESENT CAN BE FATAL.
 WARNING: REFER TO AMM 27-61-00/201 FOR APPROPRIATE
_______ SPOILER/SPEEDBRAKE DEACTIVATION PROCEDURE. INADVERTENT SPOILER MOVEMENT RESULTING FROM NEXT STEP COULD CAUSE SERIOUS INJURY TO PERSONNEL.
 (1)  
Remove electrical power (AMM 24-22-00/201).

 S 014-002

 (2)  
To access the applicable current transformer assembly, open the panel referred to in the table that follows:

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MAINTENANCE MANUAL

 Transformer Equip No.____________________  Location
 T105 P31 - Left Generator Power Panel T106 P6 - Main Power Distribution Panel T107 P32 - Right Generator Power Panel T108 P6 T111 P34 - APU/External Power Panel T112 P31 T113 P32 T115 P34 T116 P34 T122 P34 T127 P31 T128 P32
 D. Procedure
 S 024-006
 (1)  Remove the current transformer assembly as follows:
 (a)  
Remove the wire which locks the electrical connector to the current transformer.

 (b)  
Remove the electrical connector from the current transformer.
　
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