EN 2991:1996

Aerospace series - Nickel-cadmium batteries of format E type

This standard specifies the characteristics of nickel-cadmium batteries of format E type. Note: Format E type makes it possible to differentiate between the title of the present standard and those of the other product standards for nickel-cadmium batteries.

Luft- und Raumfahrt - Nickel-Cadmium Batterien - Bauart der Größenausführung E

Diese Norm legt die Eigenschaften der Nickel-Cadmium-Batterien der Bauart der Größenausführung E fest. Anmerkung: Die Bauart der Größenausführung E ermöglicht es, den Titel der vorliegenden Norm von den Titeln der anderen Produktnormen für Nickel-Cadmium-Batterien zu unterscheiden.

Série aérospatiale - Batteries d'accumulateurs au nickel-cadmium du type de format E

La présente norme spécifie les caractéristiques des batteries d'accumulateurs au nickel-cadmium du type de format E. Note: Le type de format E permet de différencier le titre de la présente norme de ceux des autres normes de produit des batteries au nickel-cadmium.

Aerospace series - Nickel-cadmium batteries of format E type

General Information

• Status: Published
• Publication Date: 23-Jul-1996
• Withdrawal Date: 30-Jan-1997
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 2 - Electrical
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 01-Jun-2017
• Completion Date: 14-Apr-2025
• Ref Project: SIST EN 2991:2001 - Aerospace series - Nickel-cadmium batteries of format E type

Overview

EN 2991:1996 (Aerospace series - Nickel‑cadmium batteries of format E type) is a CEN product standard that specifies the characteristics of nickel‑cadmium (Ni‑Cd) batteries in the designated format E for aerospace applications. The standard defines the scope and differentiating format designation to distinguish this document from other Ni‑Cd battery product standards. It has been adopted in member states (for example SIST EN 2991:2001 in Slovenia).

Key topics and requirements

While the full text must be consulted for normative details, EN 2991:1996 focuses on the essential characteristics required for format E nickel‑cadmium aerospace batteries, typically addressing high‑level technical areas such as:

• Battery characteristics and definitions - clear identification of the format E type and the intended aerospace application.
• Design and construction requirements - expectations for mechanical and electrical configuration consistent with a defined product format.
• Electrical performance attributes - baseline characteristics manufacturers must declare (e.g., nominal capacity, voltage behavior, charge/discharge characteristics).
• Safety and reliability considerations - requirements aimed at safe operation in aircraft environments.
• Marking, documentation and identification - rules for labelling, technical data sheets and traceability for components and battery assemblies.
• Compatibility and interchangeability - provisions to ensure format E batteries can be distinguished from other Ni‑Cd product formats.
• Environmental and maintenance considerations - guidance on handling, storage and operational conditions relevant to aerospace use.

Note: For specific test methods, limit values or certification steps, consult the full EN 2991:1996 standard text and any national adoptions.

Applications and users

EN 2991:1996 is directly relevant to organizations involved in the design, production, procurement and maintenance of aerospace electrical power systems:

• Aerospace battery manufacturers and component designers
• Aircraft OEMs and systems integrators specifying onboard energy storage
• Maintenance, repair and overhaul (MRO) providers and airline technical teams
• Procurement and quality assurance teams ensuring product compliance
• Certification and regulatory authorities referencing product characteristics

Using EN 2991 helps ensure that format E Ni‑Cd batteries meet a consistent set of characteristics suitable for aerospace applications, improving interoperability, safety and procurement clarity.

Related standards

• Other CEN/EN product standards for nickel‑cadmium batteries (EN series) that define different formats or additional performance criteria.
• Aerospace electrical equipment and systems standards covering integration, testing and qualification of onboard power components.

Keywords: EN 2991:1996, nickel‑cadmium batteries, format E, aerospace batteries, CEN standard, Ni‑Cd, battery characteristics, aerospace power systems.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Nickel-cadmium batteries of format E typeLuft- und Raumfahrt - Nickel-Cadmium Batterien - Bauart der Größenausführung ESérie aérospatiale - Batteries d'accumulateurs au nickel-cadmium du type de format EAerospace series - Nic
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