MIL-PRF-62528 Regulator, Engine Generator: Solid State 28 Volt, Dual Current Limit, Direct CurrentThis specification covers a solid state regulator utilizing electronic devices, to regulate the voltage, control the reverse current, and limit the current of the 28 volt \(V\), 300 ampere \(A\), direct current \(dc\) generator.

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MIL-PRF-62528B(AT)

four batteries shall be connected in series-parallel to form a 24 V source. Batteries shall be fully

charged (see 6.3.2) and kept at room temperature.

TABLE I. Measuring instrument tolerances.

Measuring

Accuracy

instrument

First article

Conformance and control

Voltmeter dc

�0.35 percent (40 V-full scale)

�0.15 V

Ammeter dc

+0.50 percent (600 A-full scale)

�3.0 A

Tachometer

�1 percent

�50 rpm at 1900 rpm

�200 rpm at 10 000 rpm

Milliammeter

�0.50 percent (600 mA - full

�5.0 mA

scale)

Oscilloscope

�3 percent

4.3 Inspection equipment. Unless otherwise specified in the contract (see 6.2), the

contractor is responsible for the provision and maintenance of all inspection equipment necessary

to assure that supplies and services conform to contract requirements. Inspection equipment

must be capable of repetitive measurements to an accuracy of 10 percent of the measurement

tolerance, except as specified in table I.

4.4 First article inspection. Unless otherwise specified (see 6.2), the Government shall

select four regulators produced under the production contract for first article inspection. First

article samples shall be inspected as specified in table II, in the order specified in table III.

Approval of the first article sample by the Government shall not relieve the contractor of his

obligation to supply regulators that are fully representative of those inspected as a first article

sample. Any changes or deviation of the production units from the first article sample shall be

subject to the approval of the contracting officer.

NOTE: Regulators subjected to first article inspection shall not be used for any other

purpose and shall be indelibly marked: "DO NOT USE."

4.5 Conformance inspection.

4.5.1 Sampling.

4.5.1.2 Sampling for examination. Sampling for conformance examination shall be in

accordance with the quality assurance section of the contract or ASQC Z1.4.