Atmospheric events and on-off surges in the system cause formation of
extreme voltages in electricity networks. ELOPAR surge arrestors are designed to protect distribution
transformers, engines, work machines and medium voltage cables
against extreme voltages in the best way.
Elopar Metal Oxide Surge Arrestors;
- have low protection level- High energy input capacity
- High protection distance- Stable characteristics
- are resistant to aging- Resistant to contamination
- have porcelain body- Maintenance-free
- safely installed- easy to use
- Creeping distance is over 25 mm/kV- High support resistance
Structure and Mode of Operation;
Metal oxide surge arrestors do not contain gaps but contain metal oxide blocks that are placed one on another in a porcelain body. These blocks have
variable resistance characteristics. In other words, they become conductive as the voltage rises. In case of temporary over voltage, current flows over surge arrestor so that such
devices or cables are protected. These surge arrestors not only have a very good mechanical strength, but also have very good dielectrically smoothness in
all surfaces. Furthermore, they have high resistance against contamination arising from atmospheric conditions under the heaviest operating conditions.
ELOPAR Porcelain Body Surge Arrestors are manufactured according to TS EN 60099-4 (IEC 60099-4) standard in order to perform this task
in the best way. Type tests have been performed at ICMET CRAIOVA High Power Laboratory and it has passed from all tests successfully.
- Surge arrestors must be as close as possible to the device to be protected.
- Surge Arrestor grounding must be the same with the system grounding.
