BS EN 50216-12-2011 PDF

Full title and description

Power transformer and reactor fittings — Part 12: Fans. EN 50216-12:2011 specifies requirements, preferred dimensions and tests for axially operating fans used on oil-to-air coolers and for blowing out radiators fitted to power transformers and reactors; it is intended to ensure interchangeability and uniform fan assembly for such cooling systems.

Abstract

This part of EN 50216 defines rated values, mechanical and electrical design requirements, identification and marking, routine and type tests, and recommendations for installation, transport and storage of axial fans used with transformer and reactor oil-to-air coolers and radiators. It covers fan drive design, connection box and housing requirements, fan wheel and protective guard design, materials and coatings, noise and performance characteristics, and ordering/designation information.

General information

• Status: Withdrawn / superseded (national adoptions withdrawn; replaced by EN IEC 60076-22-6:2021).
• Publication date: Approved by CENELEC 21 March 2011; published in 2011 (EN document dated April 2011 / national adoptions show publication in March–May 2011).
• Publisher: CENELEC (European Standard) — published/adopted by national bodies (e.g., BSI as BS EN).
• ICS / categories: 29.180 — Transformers; Reactors.
• Edition / version: EN 50216-12:2011 (Part of the EN 50216 series — Power transformer and reactor fittings).
• Number of pages: 13 pages (original English version).

Scope

EN 50216-12:2011 applies to axially operating electric fans for oil-to-air coolers and for blowing out radiators used with power transformers and reactors (indoor and outdoor use as appropriate). The standard sets out service conditions, dimensional preferences to aid interchangeability, electrical/mechanical requirements common to the equipment, and the required type and routine tests. It does not cover non-axial fan types or ancillary cooling-system components outside the fan assembly.

Key topics and requirements

• Rated values and performance characteristics (power, voltage, frequency, noise limits).
• Drive and motor design requirements, bearing life and continuous operation expectations.
• Connection box design and ingress protection (minimum IP rating), terminal sizing and earthing provisions.
• Housing, fan wheel, protective grating/basket guard and mechanical construction for safety and interchangeability.
• Materials, surface protective coatings and corrosion-resistance recommendations for transformer environments.
• Identification and rating plate information for fan and motor, plus ordering designations.
• Routine and type testing (electrical, mechanical, performance and acoustic tests) and documentation requirements.

Typical use and users

Used by transformer and reactor manufacturers, OEMs supplying cooling fans and assemblies, utilities and power-plant engineering departments, procurement teams specifying replacement fans, test laboratories performing conformity checks, and standards/quality engineers responsible for transformer cooling systems. The standard aided design and purchasing decisions where fan interchangeability is required.

Related standards

EN 50216-1 (Power transformer and reactor fittings — Part 1: General) — for general accessory requirements; national adoptions of EN 50216-12; and the later harmonised replacement EN IEC 60076-22-6:2021 / IEC 60076-22-6:2021 (Power transformers — Part 22-6: Electric fans for transformers) which consolidates and updates the fan requirements.

Keywords

transformer fans, reactor fans, oil-to-air cooler, axial fan, fan interchangeability, fan tests, fan motor, transformer cooling, EN 50216-12, EN IEC 60076-22-6.

FAQ

Q: What is this standard?

A: EN 50216-12:2011 is a European standard specifying requirements and preferred dimensions for axially operating fans used on oil-to-air coolers and radiators for power transformers and reactors.

Q: What does it cover?

A: It covers rated values, mechanical and electrical design, identification and marking, tests (routine and type), installation/transport/storage guidance and preferred dimensional information to enable fan interchangeability. It applies only to axially operating fans for transformer cooling.

Q: Who typically uses it?

A: Transformer manufacturers, OEMs and suppliers of cooling-fan assemblies, utilities, procurement and maintenance teams, test labs and standards/quality engineers specifying or verifying transformer cooling equipment.

Q: Is it current or superseded?

A: EN 50216-12:2011 has been withdrawn in national adoptions and superseded by EN IEC 60076-22-6:2021 (adoption of IEC 60076-22-6:2021). National withdrawal dates are shown in national registries (withdrawal activity recorded in 2022–2024). For current requirements, use EN IEC 60076-22-6:2021 / IEC 60076-22-6:2021.

Q: Is it part of a series?

A: Yes — it is Part 12 of the EN 50216 series (Power transformer and reactor fittings). It is intended to be read in conjunction with EN 50216-1 (Part 1: General) and related parts; the IEC/EN IEC 60076 series (power transformers) contains related guidance and the newer Part 22-6 covers electric fans in the consolidated series.

Q: What are the key keywords?

A: Transformer fans, axial fans, oil-to-air cooler, radiator fans, fan interchangeability, fan tests, fan motor rating plate, EN 50216-12, EN IEC 60076-22-6.