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Service conditions (electrical) |
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|  MIL-G-46858A
3.4.7 Service conditions (electrical). - The detail equipment specification shall specify the
power source(s) to be used and the maximum permissible power to be drawn from each.
3.4.8 Service conditions (mechanical). - The equipment shall be so constructed that no fixed
part shall become loose, no movable part or control be shifted in setting, position, or
adjustment, and no degradation be caused in the performance below that specified in the
individual equipment specification for the particular equipment after operation, transportation,
or storage under the specified environmental conditions.
3.4.9 Modularization. - To the greatest extent practicable, the equipment design shall
incorporate the modularization concept commensurate with the state-of-the-art. The general
requirements for the design of modules shall be in accordance with MIL-E-19600.
* 3.4.10 Producibility. - In the design of equipment, the designer shall choose tolerances and
fabrication techniques which lend themselves to mass production in order that a minimum of
redesign is necessary in the transition from design acceptance to production. The potential
quantity involved will be specified by the procuring activity. In addition, the design shall be
suitable for manufacture by other comparable contractors without comprehensive production
engineering changes.
3.4.11 Simplicity. - The equipment shall represent the simplest design consistent with
functional requirements and expected environmental conditions. To the maximum extent
possible, it shall be capable of operation, maintenance, and repair by semi-skilled personnel.
* 3.4.12 Maintainability and reliability. - Maintainability and reliability shall be in accordance
with Requirement 54 and 35, respectively, of MIL-STD-454, the detail specification or as
otherwise specified by the procuring activity.
3.4.13 Watertightness. - Missileborne guidance and control equipment containing operating
systems and mechanisms, when assembled, shall have the degree of enclosure specified in the
individual missile specification and as defined in MIL-STD-108.
* 3.4.14 Grounding. - Grounding of electrical and electronic equipment shall be in accordance
with the applicable requirements of MIL-STD-454, Requirement 1, in addition to the
following:
a. When radio interference filters are used in the power input, filters shall contain only
capacitors between each side of the line and chassis which are sufficiently low in
value to allow less than 5 milliamperes of current to flow to the chassis under the
most adverse conditions of maximum power, frequency and maximum voltage
permitted by the individual equipment specification. The design of the equipment
shall be such that it will operate safely and in accordance with the applicable
specifications, with a ground on either side of the power source line. The primary line
shall be protected or fused, except that the ground or neutral line shall not be
protected or fused.
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