CONTENTS-Continued
Figure
Page
7
DC ramped-voltage test with unit buswork not connected -
Yellowtail unit 2, 0A, March 13, 1979 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8
Arrangement for plotting insulation test data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
9
Log-log plots of dielectric absorption curves and discharge curves . . . . . . . . . . 60
10
Template analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
11
Comparison of test curves between 30- and 10-minute schedules,
OB, Grand Coulee, L-8, June 28, 1960 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
12
Comparison of tests to show progress of deterioration
of winding insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
13
Characteristics of very dry winding before and after varnishing . . . . . . . . . . . . . 63
14
Typical stator insulation ramped-voltage test results -
new epoxy-mica insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
15
Typical stator insulation ramped-voltage test results -
new asphalt-mica insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
16
Typical stator insulation ramped-voltage test results -
asphalt-mica insulation with a localized weak spot . . . . . . . . . . . . . . . . . . . . . . . 65
17
Typical stator insulation ramped voltage test results -
very old asphalt-mica insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
18
High-voltage, dc test on a 1,500-kcmil varnished cambric,
250-mil (6.34-mm), lead-sheathed cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
19
Approximate charging kilovolt amperes of generator stators for
determining capacity of ac high- potential set required . . . . . . . . . . . . . . . . . . . 67
v
(FIST 3-1 12/91
)
CMMS Fleet Maintenance Software for Fleet, Vehicle, & Equipment Maintenance
This Information is Reprinted From UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF RECLAMATION
