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DETAILS OF TECHNICAL STANDARDS

EN 61558-2-2

Safety of Power Transformers, Power Supply Units and Similar
Part 2-2: Particular Requirements for Control Transformers

YEAR FILE EDITION SCAME
       

European Standard

 

Contents
(courtesy CENELEC)

This part 2-2 of IEC 61558 applies to stationary or portable, single-phase or poly-phases, air-cooled control transformers associated or otherwise having a rated supply voltage not exceeding 1 000 V a.c. or 1 415 V ripple free d.c. and rated frequency not exceeding 500 Hz and no limitation of the rated output.
This standard is applicable to transformers used between circuits where double or reinforced insulation is not required by the installation rules or by the equipment specification.
This standard is applicable to dry type transformers. The windings may be encapsulated or non-encapsulated.
NOTE 1 – Normally, these transformers are intended to be associated with equipment to provide voltages different from the supply voltage for the functional requirement of the equipment. The safety insulation may be provided (or completed) by other features of the equipment, such as the body. Parts of output circuits may be connected to the input circuit or to protective earth.
NOTE 2 – For transformers filled with liquid dielectric or pulverised material, such as sand, additional requirements are under consideration.
NOTE 3 – In locations where special environmental conditions prevail, particular requirements may be necessary in accordance with IEC 60364-5-51.

 



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The main Standards
related to EN 61558-2-2


 

Corresponding European standards
No data available
 
Corresponding International standards
IEC 61558-2-2Safety of power transformers, power supplies, reactors and similar products
Part 2-2: Particular requirements and tests for control transformers and power supplies incorporating control transformers
 
Organizations and Institutions
CENELECEuropean Committee for Electrotechnical Standardization
[European Standard]
 
Other related CENELEC Standards
EN 60076-5 Power transformers
Part 5: Ability to withstand short-circuit
EN 60601-1 Medical Electrical Equipment
Part 1: General Requirements for Safety and Essential Performance
EN 61558-1 Safety of power transformers, power supply units and similar.
General requirements and tests
EN 61558-2-1 Safety of power transformers, power supplies, reactors and similar products
Part 2-1: Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applications
EN 61558-2-13 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V
Part 2-13: Particular requirements and tests for auto transformers and power supply units incorporating auto transformers
EN 61558-2-15 Safety of Power Transformers, Power Supply Units and Similar
Part 2-15: Particular Requirements for Isolating Transformers for the Supply of Medical Locations
EN 61558-2-2 Safety of Power Transformers, Power Supply Units and Similar
Part 2-2: Particular Requirements for Control Transformers
EN 61558-2-4 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V
Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers
EN 61558-2-5 Safety of transformers, reactors, power supply units and combinations thereof - Part 2-5: Particular requirements and test for transformer for shavers, power supply units for shavers and shaver supply units.
EN 61558-2-6 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V
Part 2-6: Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers
 
Thematic collection
Transformers

 


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