• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
FIGURE 4-1. Test Circuit
Adjustment. - TM-9-6115-644-24_247

TM-9-6115-644-24 Generator Set Tactical Quiet 15 Kw 50/60-400 Hz MEP-804A (60 Hz) MEP-814A (400 Hz) Manual
Page Navigation
  222    223    224    225    226  227  228    229    230    231    232  
ARMY TM 9-6115-644-24 AIR   FORCE   TO   35C2-446-12 MARINE  CORPS  TM  09249A/09246A-24/2 b.  Place  Master  Switch  in  OFF  position.  Connect  multimeter  leads  to  terminals  19  &  20  on  the  governor  control unit  (A-5),  then  move  master  switch  to  START  position.  Reading  should  be  battery  voltage  when  generator  does not crank. If there is no voltage between terminal positions, the GCU (A-5) is not functioning properly and should be  replaced. NOTE With the generator running there will be battery voltage. c. Place Master Switch in OFF position. Connect multimeter leads to terminals 19 & 18 on the governor control unit (A-5), then move master switch to START position, reading should be zero voltage when generator does not crank. If there is voltage between the terminal positions, the GCU (A-5) is not functioning properly and should be replaced. 4-3-2  Testing. a. b. c. d. e. f. g. h. i. j. k. l. m. Shut  down  generator  set. Open output box access door. Remove protective cover and attach voltage and frequency recorder to terminals 9  and  12  of  voltage  reconnection  terminal  board. Open load terminal board access door and attach load bank to generator set (4 wire connection). NOTE Ensure  load  bank  and  generator  set  voltage  reconnection  are  set  for  same  configu- ration   (i.e.,   120/208   or   240/416   VAC). Start   and   operate   generator   set   at   rated   voltage   and   frequency. Turn on voltage and frequency recorder and operate at minimum chart speed of 5 mm/sec (chart resolution of 0.2 sec/mm). Adjust recorder voltage amplifier for a minimum chart resolution of 1.0 volt/mm, and frequency deviation amplifier for a minimum resolution of 0.2 Hz/mm. Set load bank for a load equal to 75% of generator set rated load. Apply and remove the 75% load to the generator set at 40 second intervals three times. Repeat steps f and g at 50% rated load. Repeat steps f and g at 25% rated load. Repeat steps f and g at 100% rated load. Shut  down  generator  set. Turn off voltage and frequency recorder. Examine voltage and frequency recorder chart. Generator set should meet the following performance criteria: (1) Frequency regulation shall not exceed 1/4 of 1 percent of rated frequency. (2) Frequency short-term stability (30 seconds), frequency will remain constant within a band width equal to 1/2 of 1 percent rated frequency, without repetitive frequency variations, commonly called “hunting”. 4-6







Western Governors University

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.