IEC 60099 4 PDF

IEC Edition INTERNATIONAL. STANDARD. NORME. INTERNATIONALE. Surge arresters –. Part 4: Metal-oxide surge arresters without . 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. Standards: IEC and IS ”. (19th January ). Organized by. HIGH VOLTAGE DIVISION. Central Power Research Institute. (Govt. of India.

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This website uses cookies to ensure you get the best experience on our website. To ensure that the arrester’s capabilities will not be exceeded, the resources of the Thomas A. Learn more about cookies. Gapless surge arresters must be selected with sufficient steady-state self ifc to withstand the application of line-to-earth power frequency voltages under all system conditions of operation.

Surge Arresters 5 kA and 10 kA Class 1 IEC for MV Systems to 36 kV

Independent laboratory tests have ief the superiority of silicone rubber in terms of hydrophobicity, resistance to UV and surface isc performance in contaminated environments, chemical inertness, temperature stability and other key insulating properties. The UltraSIL housed surge arrester incorporates the industry recognized superior polymeric material — silicone rubber.

The rating of an arrester is the maximum power frequency line-to-ground voltage at which the arrester is designed to pass the IEC operating duty test. Edison Technical Center and their systems application engineers are available to make recommendations. Email or password incorrect.

Using Metal Oxide Varistors MOVs having excellent electrical properties, these arresters provide superior overvoltage protection for MV distribution systems. The disconnector will sense and disconnect the ground terminal in the unlikely event of arrester failure, preventing a permanent system short circuit.

IEC – Free Download PDF

Table 1 in Catalog Section I provides a general application guide for the selection of the proper arrester rating for a given system voltage and system grounding configuration. Check video at https: Consider the permissible magnitude and duration of these overvoltages including the full time of system back-up protectionwith appropriate allowances for any recent arrester discharge energies.


Our most important products are iwc and medium voltage surge arresters and medium voltage insulators. In our production is already for 9 months fully implemented the collaborative robot UR5 from the Danish company Universal Robots. Manufacturing our own MOV disks allows strict quality control over the manufacturing process from start to finish.

A disconnector that has operated gives a visual indication of internal arrester damage and the need for arrester replacement.

The advantages of polymer housed arresters — reduced size and weight, and enhanced safety — have been refined in this new generation of surge arresters: In addition, long term environmental testing has verified the lifetime superiority of UltraSIL silicone rubber when compared to other polymeric insulating materials. UltraSIL silicone rubber will not support biological growth algae and mildew and is non-flammable.

Electricity distribution companies from more than 40 countries worldwide already made the decision to trust the knowledge and technology of our company. 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.

After production, every MOV disk must pass a series of electrical tests designed to ensure the highest individual disk quality. We are particularly pleased by the visit of this fair because we carried out some business talks with potential customers with whom we met at the Hanover Messe fair in previous years. A ground lead disconnector is optionally available for use on systems having 20A or more of available fault current.

Systems which permit earth faults to remain undetected or operate with one phase earthed for periods in excess of 24 hours will require the use of an arrester having a Uc continuous capability equal to jec system maximum phase-to-phase voltage.


The lec also presents an opportunity to deepen existing contacts. LV surge arresters They have IP67 protection which ensures reliable operation in all environments.

The voltage withstand capability application on ungrounded systems is 1. Accessories for overhead networks We produce different patented accessories for MV power lines.

Under some 44 system conditions, such as transformer energization using certain types of connections and ferroresonance, higher voltages can be experienced by the arrester.

NKI – tension insulators

Our company was also an exhibitor this year at the world’s largest energy fair in Hanover. NKI – tension insulators Our tension insulators have specified mechanical load 90 kN. PKI – post insulators They have an innovative insulating head with integrated conductor clamping system.

The second application criterion to be met is a condition established by the effectiveness of system grounding. These MOV disks have proven their reliability and protective abilities through years of in-service use.

Most contain our own built-in innovative patented solutions. The fair fulfilled our expectations. Also, such a fair allows us to understand and analyze the competition.

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. Our showroom A41 was in Hall Consult with your Cooper representative to have your individual system application needs studied. Power-Frequency Overvoltages The second application criterion to be met is a condition established by the effectiveness of system grounding. The number of visitors and established business contacts is in line with expectations.

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.