EN 60099-4:2004/prAA
(Amendment)Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems
Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems
Work merged into 37/324/FDIS (pr=16386) * Standstill maintained
Überspannungsableiter - Teil 4: Metalloxidableiter ohne Funkenstrecken für Wechselspannungsnetze
Parafoudres - Partie 4: Parafoudres à oxyde métallique sans éclateurs pour réseaux à courant alternatif
Prenapetostni odvodniki - 4. del: Kovinsko-oksidni prenapetostni odvodniki brez iskrišč za sisteme z izmenično napetostjo
General Information
- Status
- Not Published
- Publication Date
- 06-May-2007
- Technical Committee
- CLC/SR 37 - Surge arresters
- Drafting Committee
- IEC/TC 37 - IEC_TC_37
- Parallel Committee
- IEC/TC 37 - IEC_TC_37
- Current Stage
- 4098 - Decision to drop project - Standstill maintained / released - Enquiry
- Start Date
- 07-Feb-2006
- Completion Date
- 20-Feb-2026
Relations
- Effective Date
- 29-Jan-2023
Overview
EN 60099-4:2004/prAA is a key international standard developed by CLC, focusing on metal-oxide surge arresters without gaps for alternating current (a.c.) systems. This amendment aligns with the ongoing development within IEC and introduces specific requirements concerning the lightning impulse discharge capability of surge arresters. Metal-oxide surge arresters play a vital role in the protection of power systems, ensuring reliable operation of overhead lines and station equipment during lightning and switching surges.
This document adds a new clause and annex outlining test procedures to verify the capability of metal-oxide surge arresters to withstand high-energy discharge events typical of lightning, especially for devices used on high-voltage lines exceeding 52 kV.
Key Topics
Lightning Impulse Discharge Capability:
The amendment details procedures to test and demonstrate a surge arrester's ability to handle severe lightning impulses, a critical property for power system reliability.Application of Test Procedures:
Procedural requirements are described, including:- Sample selection: Criteria for the selection and preparation of complete arresters or components for testing.
- Testing sequence: 18 impulse discharge operations are performed, followed by visual inspection and electrical measurements to evaluate performance.
- Test parameters: Specifics for current peak value, impulse duration (typically 200 microseconds), and criteria for pass/fail based on residual voltage and physical condition post-test.
Measurement and Reporting:
For each impulse, measurements such as energy, charge, peak current, and duration above a certain threshold are required, along with oscillograms of waveforms, ensuring comprehensive evaluation and repeatability.Performance Evaluation:
The amendment defines how to calculate the rated lightning impulse discharge capability, using the lowest average values from the test results. This ensures conservative, reliable arrester ratings for real-world performance.
Applications
The requirements and test methods set out in EN 60099-4:2004/prAA are particularly important for:
Transmission and Distribution Line Protection:
Surge arresters tested according to these procedures provide enhanced protection on high-voltage overhead lines, helping utilities manage the risks posed by lightning strikes.Power Substations:
While primarily referencing lines, substations employing metal-oxide surge arresters also benefit from standardized testing and rating for discharge capability.Equipment Manufacturers:
Ensuring compliance with this standard allows manufacturers to guarantee that their surge arresters offer robust, tested protection for critical grid infrastructure.System Operators and Utilities:
Operators can select surge arrester products with confidence, knowing that rated lightning discharge capability has been rigorously verified through standardized tests.
Related Standards
The following documents and standards are closely connected to EN 60099-4:2004/prAA:
- IEC 60099-4:
The primary base document covering metal-oxide surge arresters for a.c. systems. - EN 60099-4:
The European equivalent to IEC 60099-4, adopted by CENELEC. - IEC 60099-4 Ed. 2.0 amendments:
This amendment is directly linked with ongoing work in IEC TC 37, feeding into future updates. - Operating Duty Test Standards:
Standards defining test requirements for surge arresters under normal and abnormal operational scenarios.
Practical Value
Complying with EN 60099-4:2004/prAA ensures that surge arresters used in high-voltage a.c. networks offer proven, reliable protection against lightning surges, minimizing equipment damage and downtime. Utilities, manufacturers, and power system engineers benefit from a unified approach to testing, measurement, and performance rating, enhancing system robustness and safety across the electrical grid.
Keywords: EN 60099-4, surge arresters, metal-oxide, lightning impulse discharge capability, a.c. systems, high-voltage, test procedures, power system protection, CLC, IEC standards
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Frequently Asked Questions
EN 60099-4:2004/prAA is a draft published by CLC. Its full title is "Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems". This standard covers: Work merged into 37/324/FDIS (pr=16386) * Standstill maintained
Work merged into 37/324/FDIS (pr=16386) * Standstill maintained
EN 60099-4:2004/prAA is classified under the following ICS (International Classification for Standards) categories: 29.120.50 - Fuses and other overcurrent protection devices; 29.240.10 - Substations. Surge arresters. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 60099-4:2004/prAA has the following relationships with other standards: It is inter standard links to EN 60099-4:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 60099-4:2004/prAA 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)
37/307/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJET DE COMITÉ POUR VOTE (CDV)
Project number IEC 60099-4-A1-f2 Ed 2.0
Numéro de projet
Date of circulation Closing date for voting (Voting
IEC/TC or SC:
TC 37
Date de diffusion mandatory for P-members)
CEI/CE ou SC:
Date de clôture du vote (Vote
2004-06-04
obligatoire pour les membres (P))
2004-11-05
Titre du CE/SC: Parafoudres TC/SC Title: Surge Arresters
Secretary: J. L. Koepfinger
Secrétaire:
Also of interest to the following committees Supersedes document
Intéresse également les comités suivants Remplace le document
37/274A/CD and 37/284B/CC
Functions concerned
Fonctions concernées
Safety EMC Environment Quality assurance
Sécurité CEM Environnement Assurance qualité
CE DOCUMENT EST TOUJOURS À L'ÉTUDE ET SUSCEPTIBLE DE THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT
MODIFICATION. IL NE PEUT SERVIR DE RÉFÉRENCE. SHOULD NOT BE USED FOR REFERENCE PURPOSES.
LES RÉCIPIENDAIRES DU PRÉSENT DOCUMENT SONT INVITÉS À RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR
PRÉSENTER, AVEC LEURS OBSERVATIONS, LA NOTIFICATION DES COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF
DROITS DE PROPRIÉTÉ DONT ILS AURAIENT ÉVENTUELLEMENT WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING
CONNAISSANCE ET À FOURNIR UNE DOCUMENTATION EXPLICATIVE. DOCUMENTATION.
Titre : Amendment no 1-f2 a la CEI 60099-4 Ed Title : Amendment 1-f2 to IEC 60099-4 Ed 2.0 -
2.0 Parafoudres - Parte 4: Parfoudres áoxyde Surge Arresters - Part 4: Metal-oxide surge
meétallique sans éclaterures pour reeaux á arresters without faps for a.c. systems
courant alternatif
Note d'introduction Introductory note The material is base upon the comments
of the National Committees to 37/273/CD and 37/274/CD.
At the time of the preparation of this CDV the final
published version of IEC 60099-4 Ed 2.0 was not available.
Clauses are numbered according to 37/298/FDIS.
ATTENTION ATTENTION
CDV soumis en parallèle au vote (CEI) Parallel IEC CDV/CENELEC Enquiry
et à l’enquête (CENELEC)
permitted to download this 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.
60099-4 Amend 1/f2/Ed 2.0/CDV © IEC 2
LIGHTNING IMPULSE DISCHARGE CAPABILITY OF A METAL-OXIDE
SURGE ARRESTER
Amemdment 1 Fragment 2 to IEC 60099-4 Ed 2.0
Add new clause to 37/298/FDIS (60099-4, Ed. 2)
6.17 Impulse lightning discharge capability
When required, the lightning impulse discharge capability shall be demonstrated by tests and
procedures of Annex O.
----------------------------------------------------------------------
Add new Annex O to 37/298/FDIS (60099-4, Ed. 2)
Annex O
(normative)
TEST PROCEDURE TO DETERMINE THE LIGHTNING IMPULSE
DISCHARGE CAPABILITY
O.1 General
This procedure applies to surge arresters used on lines with system voltages exceeding
52 kV to improve the lightning performance of such lines. In general, theses arresters are
subjected to higher energy and current stresses caused by lightning than arresters installed
in stations with effective lightning protection on incoming lines. In addition, the anticipated
current waveform for decisive cases, with a duration of several tens of microseconds for
arresters applied on shielded lines and several hundreds of microseconds for arresters on
unshielded lines, considerably differs from waveforms specified in the operating duty test and
in the long duration current impulse test.
An impulse duration of 200 microseconds has been considered as a suitable compromise to
cover both the typical applications and the effect of multiple strokes.
Arresters intended for this application, therefore, shall be tested in accordance with the
lightning impulse discharge capability test to verify the rated lightning impulse discharge
capability of the arrester.
O.1.1 Selection of test samples
Three samples shall be tested. These samples shall include complete arresters, arrester
sections or resistive elements. They shall not have been subjected to any previous tests
except as necessary for evaluation purposes of this test.
60099-4 Amend 1/f2/Ed 2.0/CDV © IEC 3
The samples to be chosen for the lightning impulse discharge capability test shall have a
residual voltage at nominal discharge current at the highest end of the variation range
declared by the manufacturer. Furthermore, in case of multi-column arresters the highest
value of uneven current distribution shall be considered. In order to comply with these
demands the following shall be fulfilled:
a) The ratio between the rated voltage of the complete arrester to the rated voltage of the
section is defined by n. The volume of the resistor elements used as test samples shall not
be greater than the minimum
...
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