IEC +A applies to all types of high-voltage current-limiting fuses designed for use outdoors or indoors on alternating. This part of IEC applies to all types of high-voltage current-limiting fuses designed for use outdoors or indoors on alternating current. “IEC +A applies to all types of high-voltage current-limiting fuses designed for use outdoors or indoors on alternating.
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Time-current characteristics correspond to standard IECitem 3. They are iev for installation in: ETI high voltage fuses are designed to assure stable and reliable characteristics.
The glazed porcelain tube made in ETI own ceramic factory is extremely high mechanical and thermal resistant. Caps are rolled by pressing into the groove of the tube.
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The tightness of this connection is assured by a special seal resistant to ageing and high temperatures. Fuse elements are 62082 on a ceramic carrier and electrically welded on a special copper strips.
The inside of the tube is filled with quartz sand with an exactly determined granulation and chemical structure. The sand guarantees good and reliable extinguishing of the electric arc. An important element in the fuse-link construction is also the striker system. Part of that system is temperature sensitive element, which reacts in cases of temperature increasing of the fuse-link due to various reasons.
The system reacts in such a way that short time overloads do not cause the fuse to interrupt the circuit unnecessarily.
Striker pin Type description, rated voltage 7,2 kV example: Commercial data Technical data. Korea certificate for 7.
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