SIST EN 4530-001:2009

Overview

EN 4530-001:2006 - Aerospace series - Sealing sleeves used in elements of connection - Part 001: Technical specification - is a CEN/AECMA standard that defines the technical requirements for removable sealing sleeves used in electrical connectors and other elements of electrical connection in aerospace applications. It covers electrical, mechanical, environmental and dimensional characteristics, the qualification conditions when sleeves are not tested during connector qualification, and the required test programme and groups.

Key topics and requirements

• Scope: Specifies characteristics, qualification conditions, and test programme applicable to removable sealing sleeves in connectors.
• Definition: Sealing sleeve = device to prevent ingress of contaminants and to facilitate insertion/extraction of contacts.
• Temperature classes (maximum operating temps):
  • Class P: 125 °C
  • Class R: 150 °C
  • Class S: 200 °C
  • Class T: 260 °C
  • Class U: 350 °C
    Minimum operating temperature: −65 °C unless otherwise specified.
• Design, dimensions, operation: Detailed in relevant product standards (EN 4530-001 references product-specific documents for dimensions, assembly procedure and certain test conditions).
• Test programme: Defined test groups covering visual, dimensional and specific environmental/electrical tests (e.g., visual examination EN 2591‑101, insulation resistance EN 2591‑206, voltage proof EN 2591‑207, ozone resistance EN 2591‑316, salt mist EN 2591‑307, air leakage EN 2591‑312, immersion at low air pressure EN 2591‑314, flammability EN 2591‑317). Many connector electrical/mechanical tests are marked “not applicable” for sleeves and deferred to product standards.
• Qualification sampling: Typical qualification uses 4 sleeves plus one per test fluid for fluid-resistance tests. Specimens must be fitted in wired elements of connection with cable diameters per the product standard.
• Production quality & routine testing: Quality system per EN 9133. Routine visual inspection EN 2591‑101 with sampling level S3 (ISO 2859‑1) and AQL 1%.
• Packaging & storage: Packaging to prevent damage, label with ID and quantity; storage away from UV with inspection every five years (visual check EN 2591‑101).

Applications and users

Who uses EN 4530-001:2006:

• Aerospace connector and cable assembly designers specifying sealing sleeves
• Manufacturers of sealing sleeves and connector assemblies
• Quality assurance and test laboratories conducting qualification and production inspections
• Procurement and certification authorities verifying compliance for aerospace electrical systems

Practical uses:

• Selecting sealing sleeve temperature class and materials for environmental sealing in aircraft and spacecraft harnesses
• Defining qualification programmes when sleeves are not included in full connector tests
• Establishing production inspection plans and storage/packaging requirements for flight hardware

Related standards

• EN 2591‑100 / EN 2591 series - Test methods for elements of electrical/optical connection
• EN 9133 - Quality management systems: qualification procedure for aerospace standard parts
• ISO 2859‑1 - Sampling procedures for inspection by attributes
• MIL‑HDBK‑454 - Guideline references for material groups and test applicability

Keywords: EN 4530-001:2006, sealing sleeves, aerospace, connectors, electrical connection, qualification tests, temperature classes, quality assurance.