MIL-PRF-46795 Generating System: Alternator, Rectifier, 60 Amperes, 28 VoltsThis specification covers 28 volts \(V\), direct current \(dc\) generating systems, engine driven through belt or direct connection, to provide 60 amperes \(A\) for charging and operating loads. The system consists of a rotating field alternator with integral diode rectifier and adjustable voltage regulator in a single housing. This specification also covers repair parts for this system.

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MIL-PRF-46795H

Control test samples shall be selected at the rate of one generator system for each 250 produced

except that not more than two shall be selected in any 30 day period.

4.5.2 Procedure. Control test samples shall be identified as to production period and

subjected to test specified in table IV.

TABLE IV. Order of control tests.

Test

Requirement

Test

Overspeed

3.4.5

4.11

Voltage regulation

3.4.2.2

4.8.2

Submersion

3.4.10

4.16

4.8.3 at 77F + 15F only

Transient voltage

3.4.2.3

4.6 Method of inspection.

4.6.1 Materials and design. Conformance to 3.2, 3.2.1, 3.2.2, 3.3, and 3.3.3 shall be

determined by inspection of contractor records providing proof or certification that materials and

design conform to requirements. Applicable records shall include drawings, specifications,

design data, receiving inspection records, processing and quality control standards, vendor

catalogs and certifications, industry standards, test reports, and rating data.

4.6.2 Defects. Conformance to 3.3.1, 3.3.2, 3.5, 3.6, 3.6.1, 3.6.2, and 3.7 shall be

determined by examination for the defects listed in table II. Examinations shall be visual, tactile,

or by measurement with Standard Inspection Equipment (SIE).

4.7 Electromagnetic interference characteristics test. To determine conformance to 3.4.1,

generating system shall be subjected to test methods CE 102 and RE 102 of MIL-STD-461.

4.8 Voltage test. To determine conformance to 3.4.2, generating system shall undergo

procedures specified in 4.8.1 through 4.8.3.2.

4.8.1 Voltage adjustment test. To determine conformance to 3.4.2.1, generating system

shall be connected in circuit as shown in figure 3 and subjected to the following procedure:

a. At generator speed of 2400 rpm, using battery load only, adjust regulator

potentiometer to maximum and minimum and record voltage.

b. Increase load to 60 A, repeat adjustments, and record voltage as in a.

c. Increase generator speed to 8000 rpm and repeat a and b.

4.8.2 Voltage regulation test. To determine conformance to 3.4.2.2, voltages shall be

recorded with generating system operating under following conditions: