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BS EN 50228-7 Cable
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Technical data
Product identifiers, units and manufacturer specification data are kept in their original form.
| No. | Layer | Key Materials/ Requirements | Function |
|---|---|---|---|
| 1 | Conductor | Conductors shall be plain annealed copper wires which are solid (Class 1), stranded (Class 2) or flexible (Class 5).Tinned copper is optional. | Current-carrying core for power transmission |
| 2 | Insulation | 1.PVC (polyvinyl chloride) 2.PE (polyethylene) 3.XLPE (cross‑linked polyethylene) 4.EPR (ethylene propylene rubber) | Electrical isolation to prevent leakage current |
| 3 | Screening | Two insulated conductors are uniformly twisted to form pairs which are then assembled. The paired conductors may be : a.Unscreened b.individually and overall screened c.Overall screened Screening materials can be aluminium tape, copper tape,or copper wire braiding as per customers’ specification. | Suppress external electromagnetic interference from entering the cable (resistance to external interference). |
| 4 | Armouring | Instrumentation cables may be armoured or non armoured. Armouring which basically serves as mechanical protection can be in the form galvanized steel wire, tape or braiding wire. | Provides mechanical protection as its primary function, with additional secondary functions. |
| 5 | Sheathing | PVC (polyvinyl chloride) LSOH (Low Smoke Halogen Free) PE (polyethylene) EVA (ethylene vinyl acrylate) EMA (ethylene methyl acrylate) | Provides environmental protection for cable internal components, featuring abrasion‑resistance, moisture‑proof and ageing‑resistance. It shall not serve as primary electrical insulation. |
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