MIL-DTL-6162C
1/ Table II identifies the test run numbers of the Table III conditions which must be performed, depending upon
the machine type and class. Table II also establishes the number of times each run (from Table III) must be repeated
to accumulate the required total test time.
2/ The order in which the required test runs specified by Table II are performed is optional. The endurance test
need not be continuous; however, no test run shall be divided into increments of less than six hours each. Generator
speed during all test runs shall be rated continuous operating speed or mid-speed range, whichever is greater except
as follows:
a. At least one run of part "a" having the maximum cooling air temperature shall be performed at each of
the following generator speeds:
1.
Minimum speed for regulation
2.
Maximum rated speed
b. At least one run each of parts b and c shall be performed with the generator operating at its maximum
rated speed.
Table III. Generator endurance tests.
Maximum
Generator
Run 1/
Dew Point
Altitude
Duration
Load
Cooling
Temperature
(°C)
(°C)
(Feet x 1000)
Number
(Hours)
(Percent)
Air Source
100
12
Sea Level
1
--
Blast
+ 40
12
100
Sea Level
2
--
Self
+ 40
12
100
Sea Level
3
--
Blast
+ 71
12
Sea Level
4
100
--
Self
+ 71
12
Sea Level
5
100
--
Blast
+ 80
12
Sea Level
6
--
100
+ 120
Blast
12
15
7
--
100
0
Self
24
35
8
60
100
- 55
Blast
12
50
9
60
50
- 55
Blast
24
50
10
60
0
100
Blast
12
65
11
60
50
- 55
Blast
24
50
12
60
100
+ 40
Blast
65
12
13
60
- 15
50
Blast
1/ Table III defines 13 test run conditions identified as run number 1 through run number 13. Each run specifies
the test duration; machine load current; altitude; and cooling air source, temperature, and dew point.
4.6.18.3 Engine compatibility. The machine shall be operated on an engine for 100 hours within the load and
speed ratings specified on the manufacturers data plate, except for such operation as is consistent with engine
performance to simulate start, idle takeoff, and emergency speed conditions. Upon completion of the test, the
machine shall meet the requirements and measurements of paragraphs 4.6.1.1 and 4.6.6. No part of the generator
shall exhibit signs of structural weakness. Failure, excessive wear, or indication of flaws of any part of the generator
shall be cause for rejection.
4.6.19 Radio interference. The machine shall be operated as a generator, and radio interference measurements
conducted. Tests shall be performed at minimum speed for regulation, continuous operating speed, and maximum
speed for regulation. For each speed, loads of 10, 50, 75, and 100 percent of rated capacity shall be applied. Rated
generator voltage shall be maintained throughout the test using a manually controlled field rheostat.
4.6.19.1 Conducted interference. Conducted interference shall be within the CE03 limits for Class III B
equipment. Measurements shall be made in accordance with the specified techniques of MIL-STD-461.
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