SIST EN 60038:2011/oprA2:2026 (Fragment 1)

Amendment 2 (Fragment 1) - Standard voltages for LVDC supply and LVDC equipment (Proposed horizontal standard)

Amendement 2

Standardne napetosti za nizkonapetostno enosmerno napajanje ali nizkonapetostno enosmerno opremo (predlagan horizontalni standard) - Dopolnilo A2 (fragment 1)

General Information

• Status: Not Published
• Public Enquiry End Date: 22-Feb-2026
• ICS: 27.100 - Power stations in general
• ICS: 29.020 - Electrical engineering in general
• Technical Committee: NTF - Electricity energy supply systems
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 09-Dec-2025
• Due Date: 28-Apr-2026
• Ref Project: EN 60038:2011/prA2:2025 (Fragment 1) - Amendment 2 (Fragment 1) - Standard voltages for LVDC supply and LVDC equipment (Proposed horizontal standard)

Relations

• Amends: SIST EN 60038:2011 - CENELEC standard voltages
• Effective Date: 19-Jul-2016

Overview

SIST EN 60038:2011/oprA2:2026 (Fragment 1) represents Amendment 2 to the European standard specifying standard voltages for Low Voltage Direct Current (LVDC) supply and equipment. This proposed horizontal standard is developed and maintained by the CLC (European Committee for Electrotechnical Standardization) with input from the International Electrotechnical Commission (IEC). It outlines essential updates to standard voltage levels used in LVDC systems, addressing both low voltage applications below 120 V and higher voltage systems up to 1500 V.

This amendment focuses on harmonizing voltage specifications for LVDC supplies and equipment to ensure consistency, compatibility, and safety across a broad range of electrical and electronic applications. The document is set for review and voting with the aim to stabilize the standard until 2029.

Key Topics

• Scope Expansion

  • Clarifies nominal voltages below 120 V AC or DC, including industrial, communication equipment, batteries, and power devices.
  • Introduces specifications for DC systems and equipment with nominal voltages from above 120 V up to 1500 V.

• Voltage Standardization for LVDC Equipments

  • Updates Table 6 to list preferred and supplementary nominal voltages below 120 V AC or DC, such as 2.4 V, 3 V, 5 V, 12 V, 24 V, 48 V, and others.
  • Recognizes that voltages below 2.4 V, typically found in primary and secondary cells, are determined by IEC technical committees based on application-specific requirements.

• DC Distribution and Installation Systems Above 120 V

  • Defines operating voltage ranges tailored for installation domains (end-user and production appliances) and distribution domains (high power, long-distance LVDC distribution).
  • Specifies minimum, nominal, and maximum continuous operating voltages in Table 7, such as ±175 V, ±350 V, and ±700 V systems with associated voltage limits considering load and source variability.
  • Notes provisions for voltage control strategies including self-controlled systems and source-dependent voltage control within specified tolerances.

• Safety and Compatibility Considerations

  • Addresses electromagnetic compatibility and electrical safety concerns aligned with international best practices.
  • Relates to various IEC technical committees covering system aspects of electrical energy supply, ensuring a broad consensus on technical requirements.

• Supporting Documentation

  • References IEC TR 63282 for further guidance on LVDC systems, standard voltage assessment, and power quality requirements.

Applications

• Low Voltage DC (LVDC) Supply Systems

  • Used in residential, commercial, and industrial power supply systems where DC voltages below 120 V or up to 1500 V are beneficial for energy efficiency and safety.

• Battery-Powered Devices and Energy Storage

  • Ensures standardization for various battery voltages commonly used in portable, automotive, and stationary applications.

• Communication and Industrial Equipment

  • Facilitates the design and manufacturing of industrial machinery and communication devices with compatible LVDC voltages.

• Distribution Networks

  • Supports long-distance LVDC distribution for power infrastructure, microgrids, and renewable energy integration with standardized voltage levels for improved reliability.

• Smart Energy and Smart Cities

  • Provides foundational standards beneficial for smart grids, energy management systems, and emerging technologies requiring stable LVDC supply.

Related Standards

• IEC 60038: Establishes standard voltage levels primarily for AC supplies; this amendment complements by addressing DC voltages.
• IEC TR 63282: Technical report on assessment of standard LVDC voltages and power quality requirements, providing detailed background and practical implementation guidance.
• Various IEC Technical Committees and Subcommittees (e.g., TC8, TC1, TC3) involved in electrical energy systems and EMI/safety standards.

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Keywords: EN 60038 amendment 2, LVDC standard voltages, Low Voltage Direct Current, LVDC supply, LVDC equipment, IEC 60038, DC distribution systems, standard DC voltages, LVDC power quality, electrical equipment voltage standards, low voltage DC installation

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2026
Standardne napetosti za nizkonapetostno enosmerno napajanje ali
nizkonapetostno enosmerno opremo (predlagan horizontalni standard) - Dopolnilo
A2 (fragment 1)
Amendment 2 (Fragment 1) - Standard voltages for LVDC supply and LVDC equipment
(Proposed horizontal standard)
Amendement 2
Ta slovenski standard je istoveten z: EN 60038:2011/prA2:2025 (Fragment 1)
ICS:
27.100 Elektrarne na splošno Power stations in general
SIST EN 60038:2011/oprA2:2026 en
(Fragment 1)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

8/1785/CDV
COMMITTEE DRAFT FOR VOTE (CDV)

PROJECT NUMBER:
IEC 60038/AMD2/FRAG1 ED7
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-12-05 2026-02-27
SUPERSEDES DOCUMENTS:
8/1753/CD, 8/1772/CC
IEC TC 8 : SYSTEM ASPECTS OF ELECTRICAL ENERGY SUPPLY
SECRETARIAT: SECRETARY:
Italy Mr Christian Noce
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
TC 1,TC 2,TC 3,SC 3C,SC 3D,TC 4,TC 5,TC 7,SC 8A,SC TC 8 Horizontal Basic
8B,SC 8C,TC 9,TC 10,TC 11,TC 13,TC 14,TC 15,TC 17,SC
17A,SC 17C,TC 18,SC 18A,TC 20,TC 21,SC 21A,TC 22,SC
22E,SC 22F,SC 22G,SC 22H,TC 23,SC 23A,SC 23B,SC
23E,SC 23G,SC 23H,SC 23J,SC 23K,TC 25,TC 26,TC 27,TC
29,TC 31,SC 31G,SC 31J,SC 31M,TC 32,SC 32A,SC 32B,SC
32C,TC 33,TC 34,SC 34A,SC 34B,SC 34C,SC 34D,TC 35,TC
36,SC 36A,TC 37,SC 37A,SC 37B,TC 38,TC 40,TC 42,TC
44,TC 45,SC 45A,SC 45B,TC 46,SC 46A,SC 46C,SC 46F,TC
47,SC 47A,SC 47D,SC 47E,SC 47F,TC 48,SC 48B,SC 48D,TC
49,TC 51,TC 55,TC 56,TC 57,TC 59,SC 59A,SC 59C,SC
59D,SC 59F,SC 59K,SC 59L,SC 59M,SC 59N,TC 61,SC
61B,SC 61C,SC 61D,SC 61H,SC 61J,TC 62,SC 62A,SC
62B,SC 62C,SC 62D,TC 64,TC 65,SC 65A,SC 65B,SC 65C,SC
65E,TC 66,TC 68,TC 69,TC 70,TC 72,TC 73,TC 76,TC 77,SC
77A,SC 77B,SC 77C,TC 78,TC 79,TC 80,TC 81,TC 82,TC
85,TC 86,SC 86A,SC 86B,SC 86C,TC 87,TC 88,TC 89,TC
90,TC 91,TC 94,TC 95,TC 96,TC 97,TC 99,TC 100,TA 1,TA
2,TA 4,TA 5,TA 6,TA 15,TA 16,TA 17,TA 18,TA 19,TA 20,TC
101,TC 103,TC 104,TC 105,TC 106,TC 107,TC 108,TC 109,TC
110,TC 111,TC 112,TC 113,TC 114,TC 115,TC 116,TC 117,PC
118,TC 119,TC 120,TC 121,SC 121A,SC 121B,TC 122,TC
123,TC 124,TC 125,PC 126,PC 127,PC 128,TC
129,CISPR,CIS/A,CIS/B,CIS/D,CIS/F,CIS/H,CIS/I,CIS/S,ACEA,
ACEC,ACEE,ACOS,ACSEC,ACTAD,SyC AAL,SyC COMM,SyC
LVDC,SyC SM,SyC Smart Cities,SyC Smart Energy,SEG
11,SEG 12,SEG 13,SEG 14,ISO/IEC JTC 1/SC 25,ISO/IEC
JTC 1/SC 41,ISO/IEC JTC 1/SC 43
ASPECTS CONCERNED:
Electromagnetic Compatibility,Safety
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for Vote
(CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which t hey are
aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries” clau ses to
be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for submitting ISC c lauses.
(SEE AC/22/2007 OR NEW GUIDANCE DOC).
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You
may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without permission in
writing from IEC.
General
TITLE:
Amendment 2 (Fragment 1) - Standard voltages for L
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