Spreadsheet: mary_fischer__25416__April Log 
Sheet: WTG Down

DESERT SKY
SIGNIFICANT WTG DOWN TIME
Month: | April '02 |  |  |  | Reason: F=fault, U=unscheduled maint. S= scheduled maint. C=curtail O=other.
WTG # | Date off | Time off | Date on | Time on | Hrs. | Reason | Comments
105 | 2002-04-01 00:00:00 | 0000 | 2002-04-02 00:00:00 | 1300 | 37 | F | 3K1 coil shorted in hub.
31 | 2002-04-01 00:00:00 | 0700 | 2002-04-02 00:00:00 | 1730 | 34.5 | F | Axis 3 lost zero/safety chain
43 | 2002-04-01 00:00:00 | 1700 | 2002-04-02 00:00:00 | 1200 | 19 | F | Motor protection top box
4 | 2002-04-01 00:00:00 | 0000 | 2002-04-02 00:00:00 | 1130 | 35.5 | F | Motor protection top box/ratio gen to rotor speed
70 | 2002-04-01 00:00:00 | 0000 | 2002-04-05 00:00:00 | 1500 | 111 | F | Top generator fan motor shaft broke.
100 | 2002-04-01 00:00:00 | 1430 | 2002-04-03 00:00:00 | 0930 | 43 | F | MS-3 failed
35 | 2002-04-02 00:00:00 | 2300 | 2002-04-03 00:00:00 | 1600 | 17 | F | Axis 3 lost zero.
69 | 2002-04-03 00:00:00 | 1630 | 2002-04-04 00:00:00 | 0930 | 17 | F | Feedback CCU.  [NAME] microswitch
89 | 2002-04-03 00:00:00 | 1600 | 2002-04-04 00:00:00 | 1000 | 18 | F | Mains failure.  High impedance on L1.
92 | 2002-04-03 00:00:00 | 1600 | 2002-04-04 00:00:00 | 1030 | 18.5 | F | Lost commissioning due to defective SEG K-5 relay
70 | 2002-04-05 00:00:00 | 1500 | 2002-04-22 00:00:00 | 1200 | 405 | F | Replaced bad VEM generator
89 | 2002-04-07 00:00:00 | 1730 | 2002-04-09 00:00:00 | 1200 | 42.5 | F | VEM front fan motor went phase to phase
100 | 2002-04-07 00:00:00 | 0400 | 2002-04-08 00:00:00 | 1500 | 35 | F | MS-3 failed
62 | 2002-04-08 00:00:00 | 0400 | 2002-04-09 00:00:00 | 800 | 28 | F | MS-3 failed
40 | 2002-04-08 00:00:00 | 1500 | 2002-04-09 00:00:00 | 1300 | 22 | F | MS-3 failed
107 | 2002-04-14 00:00:00 | 1430 | 2002-04-15 00:00:00 | 830 | 18 | F | Lost commissioning due to defective SEG K-5 relay
34 | 2002-04-14 00:00:00 | 1130 | 2002-04-15 00:00:00 | 1530 | 28 | F | No activity can bus CCU
106 | 2002-04-14 00:00:00 | 1300 | 2002-04-15 00:00:00 | 1500 | 26 | F | Lost commissioning due to defective SEG K-5 relay
77 | 2002-04-11 00:00:00 | 2100 | 2002-04-17 00:00:00 | 930 | 132.5 | F | Replaced bad VEM generator
121 | 2002-04-18 00:00:00 | 1400 | 2002-04-22 00:00:00 | 1700 | 99 | F | Replaced front VEM fan motor (bad bearing)
67 | 2002-04-01 00:00:00 | 0000 | 2002-04-29 00:00:00 | 200 | 674 | F | Tower cables burned.  Replaced cables
105 | 2002-04-29 00:00:00 | 2200 | 2002-04-30 00:00:00 | 1700 | 19 | F | 3K2 contacts defective in hub.
59 | 2002-04-28 00:00:00 | 2030 | 2002-04-30 00:00:00 | 1300 | 40.5 | F | Blade closeout fell out and broke both limitswitches
53 | 2002-04-13 00:00:00 | 0800 | 2002-04-15 00:00:00 | 1630 | 56.5 | O | Engineering was repairing some instrumentation
53 | 2002-04-27 00:00:00 | 1200 | 2002-04-29 00:00:00 | 1815 | 54.25 | O | Engineering was repairing some instrumentation
39 | 2002-04-27 00:00:00 | 0200 | 2002-04-29 00:00:00 | 1200 | 58 | F | SEG had bad CSC HUR
62 | 2002-04-14 00:00:00 | 0430 | 2002-04-16 00:00:00 | 1330 | 57 | F | Replaced broken Loher generator j-box mounting bolts
107 | 2002-04-14 00:00:00 | 1730 | 2002-04-15 00:00:00 | 1030 | 17 | F | Lost commissioning due to defective SEG K-5 relay