IEC. First edition. Surge arresters –. Part 6: Surge arresters containing both series and parallel gapped structures –. Rated 52 kV and less. This part of International Standard IEC applies to surge protective devices designed for repeated operation to limit voltage surges on a.c. power circuits. This part of IEC applies to non-linear metal-oxide resistor type surge arresters without spark gaps designed to limit voltage surges on a.c. power circuits.

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One must pay particular attention to systems having low coefficients of grounding, ungrounded systems and systems that are resonant grounded or that may become ungrounded under abnormal conditions of operation. LV surge arresters They have IP67 protection which ensures reliable operation in all environments.

IEC Standard – Home

Most contain our own built-in innovative patented solutions. In the company, we are aware that such fairs represent the beginning of concluding new deals on foreign markets, which is also our main goal. This edition constitutes a technical revision.

Gapless surge arresters must be selected with sufficient steady-state self impedance to withstand the application of line-to-earth power frequency voltages under all system conditions of operation.

EVS-EN IEC 60099-8:2018

The fair fulfilled our expectations. A disconnector that has operated gives a visual indication of internal arrester damage and the need for arrester replacement. Surge arresters – Part 8: In our production is already for 9 months fully implemented the collaborative robot UR5 from the Danish company Universal Robots.


Valid Estimated date of Estonian translation publication: This edition includes the following significant technical changes with respect to the previous edition: Accessories for overhead ieec We produce different patented accessories for MV power lines.

Metal-oxide surge arresters with external series gap EGLA for overhead transmission and distribution lines of a.

To ensure that the arrester’s capabilities will not be exceeded, the resources of the Thomas A. This second edition cancels and replaces the first edition published in A ground lead disconnector is optionally available for use on systems having 20A or more of available fault current.

The UltraSIL housed surge arrester incorporates the industry recognized superior polymeric iev — silicone rubber. The second application criterion to be met is a condition established by the effectiveness of system grounding. Independent laboratory tests have verified the superiority of silicone rubber in terms of hydrophobicity, resistance to UV and surface tracking performance in contaminated environments, chemical inertness, temperature stability and other key insulating properties.

In the public tender “Incentives for research and development projects 2” we received grants for “Development of a system for monitoring the functionality of surge arresters”.

Your shopping cart is empty. The Lightning discharge capability test has been completely re-written and re-named to Test to verify the repetitive charge transfer rating, Qrs with lightning discharges to reflect changes introduced in IEC Ed.


Give feedback ie the content of this standard. Full text browsing Price: The rating of an arrester is the maximum power frequency line-to-ground voltage iecc which the arrester is designed to pass the IEC operating duty test.

NKI – tension insulators

The motive for the participation in the Hanover fair was to establish new contacts with potential partners or representatives of companies that market equipment for power systems.

NKI – tension insulators Our tension insulators have specified mechanical load 90 kN. Manufacturing our own MOV disks allows strict quality control over the irc process from start to finish. Under some special system conditions, such as transformer energization using certain types of connections and ferroresonance, higher voltages can be experienced by the arrester. This website uses cookies to ensure you get the best experience on our website. Learn more about cookies. Edison Technical Center and their systems application engineers are available to make recommendations.

The number oec visitors and established business contacts is in line with expectations. Email or password incorrect. Power-Frequency Overvoltages The second application criterion to be met is a condition established oec the effectiveness of system grounding.