EN 60921:2004
(Main)Ballasts for tubular fluorescent lamps - Performance requirements
Ballasts for tubular fluorescent lamps - Performance requirements
This standard specifies performance requirements for ballasts excluding resistance types for use on a.c. supplies up to 1 000 V at 50 Hz or 60 Hz, associated with tubular fluorescent lamps with pre-heated cathodes operated with or without a starter or starting device and having rated wattages, dimensions and characteristics as specified in EN 60081 and 60901. It applies to complete ballasts and their component parts such as resistors, transformers and capacitors.
Vorschaltgeräte für röhrenförmige Leuchtstofflampen - Anforderungen an die Arbeitsweise
Ballasts pour lampes tubulaires à fluorescence - Exigences de performances
La présente norme spécifie les prescriptions de performance des ballasts, autres que ceux du type résistif, pour courant alternatif jusqu'à 1 000 V, à 50 Hz ou 60 Hz, associés à des lampes tubulaires à fluorescence à cathodes préchauffées et à allumage commandé ou non par interrupteur d'amorçage (starter), et dont les puissances nominales, les dimensions et les caractéristiques sont indiquées dans les EN 60081 et EN 60901. La norme est applicable aux ballasts terminés, ainsi qu'à leurs éléments constitutifs tels que résistances, transformateurs et condensateurs
Predstikalne naprave za cevaste fluorescenčne sijalke – Zahteve za tehnične karakteristike (IEC 60921:2004)
General Information
- Status
- Published
- Publication Date
- 20-Dec-2004
- Withdrawal Date
- 30-Sep-2011
- Technical Committee
- CLC/TC 34 - 'Lamps and related equipment
- Drafting Committee
- IEC/SC 34C - IEC_SC_34C
- Parallel Committee
- IEC/SC 34C - IEC_SC_34C
- Current Stage
- 6060 - Document made available - Publishing
- Start Date
- 21-Dec-2004
- Completion Date
- 21-Dec-2004
Relations
- Effective Date
- 28-Jan-2023
- Effective Date
- 28-Jan-2023
Overview
EN 60921:2004 (CLC) sets the performance requirements for ballasts for tubular fluorescent lamps. The standard applies to ballasts (excluding resistance types) intended for use on a.c. supplies up to 1 000 V at 50 Hz or 60 Hz and associated with tubular fluorescent lamps having pre‑heated cathodes, operated with or without a starter or starting device. It covers complete ballasts and their component parts - for example, resistors, transformers and capacitors - and references lamp rated wattages, dimensions and characteristics as specified in EN 60081 and EN 60901.
Key Topics
- Scope and applicability: Limits to a.c. supplies (≤ 1 000 V, 50/60 Hz) and exclusion of resistance-type ballasts.
- Lamp compatibility: Ballast requirements when used with tubular fluorescent lamps with pre‑heated cathodes, and operation with or without starters.
- Component coverage: Applies to both complete ballasts and constituent components such as resistors, transformers, and capacitors.
- Reference to lamp standards: Uses lamp rated wattages, dimensions and characteristics defined in EN 60081 and EN 60901 (as applicable).
(Note: EN 60921 defines performance requirements and interfaces; designers and testers should consult the full standard text for precise test methods and numerical criteria.)
Applications
EN 60921 is used to ensure reliable and compatible operation of fluorescent lighting systems across commercial, industrial and public installations. Practical applications include:
- Specifying and procuring ballasts that meet recognized performance requirements for compatibility and safety.
- Guiding product design and component selection for ballast manufacturers (transformers, capacitors, resistors).
- Supporting conformity assessment and type testing in test laboratories and certification bodies.
- Informing lighting designers, electrical contractors and maintenance teams about required ballast compatibility for retrofit or new installations.
Who Uses This Standard
- Ballast and lighting‑component manufacturers
- Electrical and lighting designers / engineers
- Testing and certification laboratories
- Procurement and compliance officers in construction and facilities management
- Installers and maintenance professionals responsible for fluorescent lighting systems
Related Standards
- EN 60081 - Performance and dimensions for specific tubular fluorescent lamps (referenced for lamp ratings)
- EN 60901 - Characteristics of certain fluorescent lamps (referenced for lamp characteristics)
Using EN 60921:2004 in specifications and product documentation helps ensure compatibility, performance and regulatory alignment of tubular fluorescent lamp ballasts in AC-powered lighting systems.
Frequently Asked Questions
EN 60921:2004 is a standard published by CLC. Its full title is "Ballasts for tubular fluorescent lamps - Performance requirements". This standard covers: This standard specifies performance requirements for ballasts excluding resistance types for use on a.c. supplies up to 1 000 V at 50 Hz or 60 Hz, associated with tubular fluorescent lamps with pre-heated cathodes operated with or without a starter or starting device and having rated wattages, dimensions and characteristics as specified in EN 60081 and 60901. It applies to complete ballasts and their component parts such as resistors, transformers and capacitors.
This standard specifies performance requirements for ballasts excluding resistance types for use on a.c. supplies up to 1 000 V at 50 Hz or 60 Hz, associated with tubular fluorescent lamps with pre-heated cathodes operated with or without a starter or starting device and having rated wattages, dimensions and characteristics as specified in EN 60081 and 60901. It applies to complete ballasts and their component parts such as resistors, transformers and capacitors.
EN 60921:2004 is classified under the following ICS (International Classification for Standards) categories: 29.140.30 - Fluorescent lamps. Discharge lamps. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 60921:2004 has the following relationships with other standards: It is inter standard links to EN 60921:1991/A2:1995, EN 60921:2004/A1:2006. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 60921:2004 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2005
1DGRPHãþD
SIST EN 60921:1995
3UHGVWLNDOQHQDSUDYH]DFHYDVWHIOXRUHVFHQþQHVLMDONH±=DKWHYH]DWHKQLþQH
NDUDNWHULVWLNH ,(&
Ballasts for tubular fluorescent lamps - Performance requirements
Vorschaltgeräte für röhrenförmige Leuchtstofflampen - Anforderungen an die
Arbeitsweise
Ballasts pour lampes tubu
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...