• Version
• 270 Downloads
• 212.13 KB File Size
• 1 File Count
• May 18, 2016 Create Date
• May 18, 2016 Last Updated

Space Station Cable-Wire Design and Control Requirements for Electromagnetic Compatibility

Wiring and cabling carrying electrical signals will couple those signals to other wires and cables.
Wire and cable separation and shielding treatment can be used to reduce the coupling effects and
the resulting undesirable circuit effects. Design analysis, maintenance and correction of
problems cannot be implemented without identification of wire and cable bundles and routing.
This document identifies requirements for wire and cable signal classification, signal separation,
and identification.
This document defines wiring and cabling requirements for Electromagnetic Compatibility
(EMC) in accordance with the specifications of SSP 30243. The requirements of this document
are applicable to all flight elements of the Space Station Program (SSP) and to all equipment at
the interface with flight elements.
The purpose of this document is to provide a uniform specification and methodology for cabling
and wiring requirements for EMC. These requirements will minimize the effect of magnetic
and/or electric field coupling between the wiring and circuits associated with the wiring.
SSP 30243 invokes this document for cable/wire design and control requirements for EMC. In
the event of any conflict between this document and any other document, SSP 30243 shall take
precedence.
The following applicable documents of the exact issue shown in the current issue of SSP 50257
form a part of this specification to the extent specified in the referenced paragraphs. Inclusions
of applicable documents does not supersede the order of precedence identified in 1.4.
The use of fiber—optic cables for signal transmission is recommended to reduce electromagnetic
noise coupling problems. The requirements for fiber—optic cables are contained in SSQ 21654.
The reduction of electromagnetic effects in the wiring will be accomplished by isolating
incompatible circuits via wire cable bundling, routing, shielding, separation, and wire treatment
requirements presented herein.