IEC 61558-2-1:2007
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

Standard No.

IEC 61558-2-1:2007

Release Date

2007

Published By

International Electrotechnical Commission (IEC)

Status

Be replaced

Replace By

IEC 61558-2-1:2021

Latest

IEC 61558-2-1:2021

Replace

IEC 96/252/FDIS:2006 IEC 61558-2-1:1997

Scope

Replacement: This part of IEC61558 deals with safety aspects of separating transformers and power supplies incorporating separating transformers such as electrical, thermal and mechanical safety. This Part 2-1 is applicable to separating transformers and power supplies incorporating both separating transformers and electronic circuits. This Part 2-1 is not applicable to external circuits and their components intended to be connected to the input terminals, output terminals or socket-outlets of the transformers and power supplies. This Part 2-1 does not apply to transformers covered by IEC 60076-11. This Part 2-1 applies to stationary or portable, single-phase or polyphase, air-cooled (natural or forced) independent and associated separating transformers and power supplies, having a rated supply voltage not exceeding 1 000 V a.c., a rated supply and internal operating frequency not exceeding 500 Hz. The rated output does not exceed: - 1 kVA for single-phase separating transformers and single-phase power supplies incorporating separating transformers; - 5 kVA for poly-phase separating transformers and poly-phase power supplies incorporating separating transformers. This Part 2-1 is applicable to separating transformers and power supplies incorporating separating transformers without limitation of the rated output subject to an agreement between the purchaser and the manufacturer. This Part 2-1 is applicable to dry-type transformers. The windings may be encapsulated or non-encapsulated. The no-load output voltage or the rated output voltage does not exceed 1 000 V a.c. or 1 415 V ripple-free d.c. For independent separating transformers and independent power supplies, the no-load output voltage and / or the rated output voltage is not less than 50 V a.c., or 120 V ripple-free d.c.

IEC 61558-2-1:2007 history

• 2021 IEC 61558-2-1:2021 Safety of transformers, reactors, power supply units and combinations thereof - Part 2-1: Particular requirements and tests for separating transformers and power supply units incorporating separating transformers for general applications
• 2007 IEC 61558-2-1:2007 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
• 1997 IEC 61558-2-1:1997 Safety of power transformers, power supply units and similar - Part 2: Particular requirements for separating transformers for general use