(1)
20-10-111, Electrical/Electronic Black Box
(2)
24-22-0, Manual Control
B. Access
(1) Location Zone
101 Left Control Cabin - P5 forward overhead panel
102 Right Control Panel - P6 load control center panel
C. Procedure
(1) Make sure that no electrical power is on the airplane (Ref 24-22-0).
CAUTION: MAKE SURE THAT NONE OF THE AC OR DC BUSES ARE ENERGIZED WHEN YOU REMOVE THE BPP. ELECTRICAL POWER DURING BPP REMOVAL CAN CAUSE DAMAGE TO THE BPP.
(a)
Make sure that the GEN and APU GEN switches on the P5-4 panel are in the OFF position.
(b)
Make sure that the BAT switch on the P5-13 panel is in the OFF position.
(c)
Make sure that the external power cable is disconnected or not energized.
(2) Remove the BPP (black box unit with cam-lock handles) (Ref 20-10-111).
3. Bus Protection Panel Installation
A. Standard Tools and Equipment
(1) External Power Supply - 115/200 volts ac, 3-phase, 400Hz
500
Feb 01/96 24-41-21
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Page 401
B. References
(1)
20-10-111, Electrical/Electronic Black Box
(2)
24-22-0, Manual control
(3)
24-41-0, AC External Power
C. Access
(1)
Location Zone
101 Left control Cabin - P5 forward overhead panel
102 Right Control Panel - p6 load control center panel
115 Cargo Door - P13 forward attendant’s panel
202 Lower Nose Compartment - P19 external power panel
402 Right Wing - outboard leading edge
(2)
Access Panels
1101 External Power Receptacle Door
6540 Refueling Station Access Door
D. Procedure
(1) Make sure that no electrical power is on the airplane (Ref 24-22-0).
CAUTION: MAKE SURE THAT NONE OF THE AC OR DC BUSES ARE ENERGIZED WHEN YOU INSTALL THE BPP. ELECTRICAL POWER DURING BPP INSTALLATION CAN CAUSE DAMAGE TO THE BPP.
(a)
Make sure that the GEN and APU GEN switches on the P5-4 panel are in the OFF position.
(b)
Make sure that the BAT switch on the P5-13 panel is in the off position.
(c)
Make sure that the external power cable is disconnected or not energized.
(2)
If they are installed, remove the protective covers for the BPP and the shelf in the P6 panel.
(3)
Install the BPP (black box unit with cam-lock handles) (Ref 20-10-111).
(4)
Turn the DC meter switch on the P5-13 panel to BAT.
(a) Make sure that the DC voltmeter shows 24±4 volts.
E. Make Sure That the Bus Protection Panel Operates Correctly.
(1)
Make sure the access door for the refueling station is closed.
(2)
Open the external power receptacle door.
(3)
Connect an external power cable to the P19 receptacle.
WARNING: BEFORE YOU CONNECT THE EXTERNAL POWER CABLE TO THE AIRPLANE, MAKE SURE THE EXTERNAL POWER CABLE IS NOT ENERGIZED. ELECTRICAL ARCS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(4)
Energize the external power cable.
(a)
Make sure that the EXTERNAL POWER - CONN and NOT IN USE lights on the P19 panel come on.
(b)
Make sure that the GRD POWER AVAILABLE light on the P5-4 panel comes on.
(5)
Push the BAT switch on the P5-13 panel to ON.
(a) Make sure that these lights on the P5-4 panel come on:
1) TRANSFER BUS OFF 1 and 2
2) BUS OFF 1 and 2
3) GEN OFF BUS 1 and 2
(6)
Push the GROUND SERVICE switch on the forward attendant’s panel to ON.
(a) Make sure that the EXTERNAL POWER - NOT IN USE light on the P19 panel goes off.
(7)
Push the GRD PWR switch on the P5-4 panel to ON.
(a)
Make sure that these lights go off:
1) TRANSFER BUS OFF 1 and 2
2) BUS OFF 1 and 2
(b)
Make sure that the GROUND SERVICE switch moves to the OFF position.
(8)
Remove the external power if it is not necessary (Ref 24-22-0).
24-41-21
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BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Feb 01/96
500 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737 AMM 飞机维护手册 电源 ELECTRICAL POWER(62)
