OPERATION, MAINTENANCE AND REPAIR OF AUXILIARY GENERATORS Episode 5 ppt

... as leading edges of vanes and blades (see fig 3-26). 3-29 TM 5- 6 85/ NAVFAC MO-912 3- 15. Principles of operation. a. Components. A typical gas turbine engine con- sists of a compressor, combustor and turbine ... pressure. Approximately 25 percent of the compressor’s total air flow is used for combustion at an air/fuel ratio of about 15: l. The remaining 75 percent of c...

Ngày tải lên: 12/08/2014, 16:21

... another. The extent of load shedding and the sequence of dropping loads and restoring to normal are also . contained in the plan. 2-10. Components . Standards for selection of components for ... supplied, their demand, consumption, voltage, phase, and frequency requirements. Also to be considered are load trend, expected life of the project and of the equipment, fuel cost...

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... normal self-excitation are usually rated at about 1 35 per- cent of rated voltage and a rate buildup of about 1 25 volts per second. Working range is between 75 and 1 25 percent of rated exciter voltage. b. Current. ... starting circuit of the prime movers and the closing and tripping of the switchgear circuit breakers. Additionally, the con- trol circuits provide contro...

Ngày tải lên: 12/08/2014, 16:21

... barriers; clean off smoke and dust. Repair moderate damage to bushing insulation by sanding smooth and refinishing with a clear insulating var- nish. Inspect alignment and condition of movable and stationary ... information necessary for switch and related circuit operation; and transfer mechanism to make the transfer from source to source. 5- 13 TM 5- 6 85/ NAVFAC MO-912 P...

Ngày tải lên: 12/08/2014, 16:21

... for security, and overheating and damage due to leakage. Perform inlet and ex- haust inspection as described previously. Check standoffs, brackets and struts for looseness, cracks, and damage. ... at lower part of duct is open and free of any obstruction so that moisture (rain or condensation) can run off. Check inlet temperature sensor for signs of damage. Clean sensor and...

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... (- 18°C) 2. 75 - 10°F (-23°C) 3. 25 - 20°F ( - 29°C) 3 .50 -30°F (-34°C) 4.00 - 40°F ( - 40°C) 4. 25 - 50 °F ( - 46°C) 4 .50 - 55 °F ( - 48°C) 4. 75 TM 5- 6 85/ NAVFAC MO-912 APPENDIX ... _ Government Publications. AR 420-43 DA PAM 738- 750 MIL-STD-188-124 NAVFAC MO-207 TB 750 - 65 1 TM 5- 682 TM 5- 683/NAVFAC MO-ll6/AFJMAN 32-1083 TM 750 - 254 40...

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... . . 5 3b .5 4b Index 1 TM 5- 6 85/ NAVFAC MO-912 necting rod, faulty piston rings or wrist pins, or a loose flywheel. Inspect to identify the problem. b. Repairs. Repairs must be prompt and ... part often will lead to a series of diffi- culties originating from by-products or effects of the initial failure. Therefore, carefully check all of the related and resultant functions...

Ngày tải lên: 12/08/2014, 16:21

... Proper installation and maintenance of oil filters and mechanical operation of the engine are equally important for treatment of oil. Preven- tion of contamination and removal of contaminants should ... C urrent (DC) Generators. Regulation of DC generators affects voltage regulation and the division of load between generators. In general, the 3-17 TM 5- 6 85/ NAVF...

Ngày tải lên: 12/08/2014, 16:21

... strength of the mag- netic field, the number of coils (and number of wind- ings of each coil), and the speed at which the rotor turns. b. Current. Current is the rate of transfer (flow) of electricity, ... frequency of the output voltage are synchronous generators. Synchronous generators are usually called alternators. 4 -5. Alternator types. 4-3. Types of generator...

Ngày tải lên: 12/08/2014, 16:21

... TM 5- 6 85/ NAVFAC MO-912 - c The proponent agency of this publication is the Office of the Chief of Engineers, United States Army. Users are invited to send comments and suggested improvements ... Publications and Blank Forms) directly to Director, U.S. Army Center for Public Works, ATTN: CECPW-EE, 7701 Telegraph Rd., Alexandria, VA 223 159 3862. By Order of the Secretaries o...

Ngày tải lên: 12/08/2014, 16:21