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Standard [CURRENT]

DIN EN 61558-2-9:2011-09

VDE 0570-2-9:2011-09

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-9: Particular requirements and tests for transformers and power supply units for class III handlamps for tungsten filament lamps (IEC 61558-2-9:2010); German version EN 61558-2-9:2011

German title
Sicherheit von Transformatoren, Drosseln, Netzgeräten und entsprechenden Kombinationen - Teil 2-9: Besondere Anforderungen und Prüfungen an Transformatoren und Netzgeräten für Handleuchten der Schutzklasse III für Wolframdrahtlampen (IEC 61558-2-9:2010); Deutsche Fassung EN 61558-2-9:2011
Publication date
2011-09
Original language
German
Pages
18

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Publication date
2011-09
Original language
German
Pages
18

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Overview

This part of IEC 61558 deals with the safety of transformers for class III handlamps for tungsten filament lamps and power supply units incorporating transformers for class III handlamps for tungsten filament lamps. Transformers incorporating electronic circuits are also covered by this standard. Unless otherwise specified, from here onward the term transformer covers transformers for class III handlamps for tungsten filament lamps and power supply units incorporating transformers for class III handlamps for tungsten filament lamps. This part is applicable to stationary or portable single-phase air-cooled (natural or forced) independent or associated dry-type transformers. The windings may be encapsulated or non-encapsulated. This standard is applicable to transformers and power supply (linear) with internal operational frequencies not exceeding 500 Hz. This standard shall be used in combination with Part 2-16 for switch mode power supply (SMPS) units which is also applicable to power supplies with internal operational frequencies higher than 500 Hz. Where the two requirements are in conflict the most severe take precedence. The rated supply voltage does not exceed 1 000 V a.c., and the internal operational frequencies do not exceed 500 Hz. Transformers for class III handlamps for tungsten filament lamps have the following additional characteristics: - the no-load output voltage and the rated output voltage do not exceed 50 V a.c. or 120 V ripple-free d.c.; - there is only a small difference between the no-load voltage and the rated output voltage. The rated output does not exceed: - 10 kVA. This part is not applicable to external circuits and their components intended to be connected to the input terminals and output terminals of the transformers. Transformers covered by this part are used in applications where double or reinforced insulation between circuits is required by the installation rules or by the end product standard. The responsible Committee is K 323 "Transformatoren, Drosseln, Netzgeräte und entsprechende Kombinationen" ("Transformers, reactors, power supply units and corresponding combinations thereof") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.

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