737-300 400 500 AMM 飞机维护手册 电源 ELECTRICAL POWER(15)

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 2)  When the DRIVE TEMP switch is set to rise, the GEN DRIVE OIL TEMP meters show the temperature difference between the oil that goes into the VSCF and the oil that comes out of the VSCF.
 NOTE: The rise temperature reading in the minus region
____ below zero is acceptable.
 3)  AIRPLANES WITH -23 AND ON VSCF; When the DRIVE TEMP switch is set to rise, the GEN DRIVE OIL TEMP meters show the temperature difference between the oil that goes into the VSCF and the oil that comes out of the VSCF.
 NOTE: The rise temperature reading will be positive even
____ when the oil in and oil out temperature are equal. A below zero reading is acceptable.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 VARIABLE SPEED CONSTANT FREQUENCY  ú 24-11-00
 GENERATOR/CONVERTERS  ú CONFIG 2 ú 01 Page 15 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 4)  The resistance of the oil-in and oil-out temperature sensors increases when the temperature increases (Fig. 5). The change in resistance of the sensors causes a change in the temperature indications on the meters on the P5-5 panel.
 B.  Control
 (1)  
The ac generator drive system operates automatically when you start the engine. To connect the VSCF to the ac buses, you must push the GEN switch on the P5-4 panel to ON (AMM 24-22-00/201).

 (2)  
The DISCONNECT switches on the P5-5 panel manually disconnect the generator field circuit. The VSCF does not disconnect mechanically. To connect the generator field circuit again, you must push the INDICATE button or the BIT switch on the VSCF to INDICATE (Ref 24-11-11/501).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 VARIABLE SPEED CONSTANT FREQUENCY  ú 24-11-00
 GENERATOR/CONVERTERS  ú CONFIG 2 ú 01 Page 16 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

-30  -20  -10  0  10  20  30  40  50  60  70  80  90  100  110  120 
(-22)  (-4)  (14)  (32)  (50)  (68)  (86)  (176)(158)(140)(122)(104)  (230)(212)(194)  (248) 
SENSOR TEMPERATURE - DEGREES C (DEGREES F) 

VSCF OIL-IN TEMPERATURE SENSOR
Temperature Sensor Temperature/Resistance Charts
Figure 5 (Sheet 1)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 VARIABLE SPEED CONSTANT FREQUENCY  ú 24-11-00
 GENERATOR/CONVERTERS  ú CONFIG 2 ú 01 Page 17 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

150
70 -30-20-10 0 10 20 30 40 50 60 70 80 90 100110120 (-22) (-4) (14) (32) (50) (68) (86) (104) (122) (140) (158) (176) (194) (212) (230) (248)
SENSOR TEMPERATURE - DEGREES C (DEGREES F)
VSCF OIL-OUT TEMPERATURE SENSOR
Temperature Sensor Temperature/Resistance Charts
Figure 5 (Sheet 2)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 VARIABLE SPEED CONSTANT FREQUENCY  ú 24-11-00
 GENERATOR/CONVERTERS  ú CONFIG 2 ú 01 Page 18 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 AC GENERATOR DRIVE SYSTEM - TROUBLE SHOOTING
____________________________________________
 1.  General_______
 A.  This procedure contains trouble charts to isolate failures in the constant speed drive (CSD) system. The failures show on the indicator lights and gages on the P5-5 panel.
 B.  You will start at the top and move down through the charts to isolate failures.
 WARNING:_______DO NOT LET THE OIL GET ON YOUR SKIN. THE OIL CAN CAUSE SKIN PROBLEMS.
　
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