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PROXAR® surge arresters meet the requirements of the IEEE C62.11-2020 standard

Jacek Turkowski

Marketing & Sales Director at Protektel

PROXAR® surge arresters, manufactured in Poland, meet the requirements of the IEEE C62.11-2020 standard although they are designed according to the European standard IEC 60099-4:2014. We explain what are the differences in interpretation between these standards and how exactly they relate to Protektel surge arresters.

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We also export our PROXAR® surge arresters to countries such as Peru, Ecuador, and Brazil. This would not be possible if our devices did not comply with the IEEE C62.11-2020 standard. In practice, we have found that PROXAR® surge arresters exceed the requirements of this standard. Find out about this topic.

Table of differences between IEC 60099-4:2014 and IEEE C62.11-2020 standards

The degree of harmonisation between IEC 60099-4:2014 and IEEE C62.11-2020 is 80% today. The remaining 20% of the requirements relate mainly to the nomenclature used, but this also applies to the environmental conditions of surge arresters in specific applications. We describe this in the next section 

The following table shows the differences between the requirements of IEC 60099-4:2014 and IEEE C62.11-2020.

AspectIEC 60099-4:2014IEEE Std C62.11-2020
Standard OrganizationInternational Electrotechnical Commission (IEC)Institute of Electrical and Electronics Engineers (IEEE)
ScopeGeneral guidance and test procedures for surge arresters in AC systems, including both station-type and line-typeSpecific requirements and testing procedures for metal-oxide surge arresters used in power systems
ApplicationSurge arresters for various applications, including station and line protection in AC systemsSurge arresters used in power systems, with a focus on metal-oxide surge arresters
Types of Surge Arresters CoveredStation-type and line-type surge arrestersMetal-oxide surge arresters
Design CriteriaProvides design criteria and test procedures for surge arresters without specifying the technology usedFocuses specifically on metal-oxide surge arresters, providing detailed design and testing requirements for this technology
Voltage RatingsGuides surge arresters with various voltage ratingsFocuses on metal-oxide surge arresters used in medium-voltage and high-voltage applications
Testing ProceduresSpecifies testing procedures for both station and line surge arresters, covering aspects like energy handling capacity, residual voltage, and moreConcentrates on testing procedures specific to metal-oxide surge arresters, including electrical, mechanical, and environmental tests
Energy Handling CapacityProvides tests and criteria for energy capability and energy stress testsProvides specific testing procedures to evaluate the energy handling capacity of metal-oxide surge arresters
Residual Voltage TestingIncludes testing for residual voltage after discharge eventsContains testing for residual voltage and protective margin of metal-oxide surge arresters
Temporary Overvoltage TestsTesting procedures may vary based on surge arrester typeThis may include testing for temporary overvoltage withstand capability
Pressure Relief TestingThis may include pressure relief testing, especially for station-type surge arrestersThis may include testing related to pressure relief for metal-oxide surge arresters
Contamination TestsThis may include tests for contamination withstandThis may include testing for contamination in specific environments
International vs. American StandardAn international standard developed by the International Electrotechnical CommissionDeveloped by the Institute of Electrical and Electronics Engineers and follows American standards
Latest Version (as of September 2021)IEC 60099-4:2014IEEE Std C62.11-2020
Table 1. Differences between the IEEE C62.11-202 standard and IEC 60099-4:2014

What are the reasons for the differences between the IEC and IEEE standards?

The main differences between IEC 60099-4:2014 and IEEE C62.11-2020 arise from the different approaches to the installation conditions of surge arresters, resulting from the characteristics of the power system and the influence of environmental conditions. 

In Europe, such devices are preliminarily designed, manufactured, and used to protect substations and line power facilities. Therefore, such surge arresters, when designed for mounting on load-bearing elements, have a mechanically robust structure and solid fixings. This requires the use of additional material, which increases the device's weight and manufacturing costs of the device.

Meanwhile, in the Americas, due to the much greater distances between substations, surge arresters are mainly used to protect transmission line insulators and so-called compact lines. This results in a different way of installing them, which does not require such a robust design, so devices intended for this market can have a lower mechanical strength, which makes them cheaper. However, the Protektel expert stresses one important detail:

ÔÇťWhile our PROXAR┬« surge arresters, compliant with IEC 60099-4:2014 and IEEE C62.11-2020, are used for both substations and power line protection, strictly line arresters (TLA) in most cases do the mechanical strength suitable, to be mounted on supporting structures in substation applications or other system areas.ÔÇŁ

Jacek Turkowski, Director of Marketing and Sales at Protektel

PROXAR® surge arresters vs. IEEE C62.11-2020

The main components of PROXAR® surge arresters have parameters that exceed the requirements of the IEEE C62.11-2020 standard. This is a result, among other things, of the use of high-quality varistors in the design of these devices. This is confirmed by the results of tests carried out per the latest version of the EN 60099-4 standard.

Protektel's surge arresters can also be used for in-line protection, which is widely used in the Americas. In addition, thanks to their robust mechanical design, makes them suitable for the protection of substations.

In Europe, we say: PROXAR® Unlimited trust, because when you work with us, you can count not only on high-quality surge arresters, but also on the expert advice and knowledge of our experts.

Daniel Stempiń

Product Manager MV / HV at Protektel

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Daniel Stempiń

Product Manager MV / HV at Protektel

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