System for overvoltage protection

A technology of surge protection and transformers, applied in the protection of overvoltage response, emergency protection circuit device for limiting overcurrent/overvoltage, emergency protection circuit device, etc., can solve high peak voltage, insurance damage, Unable to determine the remaining voltage and other issues
CN1443388AInactive Publication Date: 2003-09-17KONINK KPN NV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KONINK KPN NV
Publication Date
2003-09-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

System for surge protection of an object comprising a supply unit, which is connected to the secondary output of an external transformer. The secondary windings (1) of the external transformer are coupled in a star configuration, the star point of the transformer being connected to a downstream neutral conductor (7) and an earth electrode provided near to the transformer. In the supply unit, at least one phase conductor (6) is connected to the neutral conductor (7) by means of a surge protective device of a first type (4), and the neutral conductor (7) is connected to an earth electrode (5) provided near to the supply unit by means of a surge protective device of a second type (9). The surge protective device of the first type (4) comprises a voltage dependent resistor or varistor and the surge protective device of the second type (9) comprises a lightning current arrester or spark gap element.
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Description

Background of the invention

[0001] The invention relates to a system for lightning and surge protection of objects, in which devices installed are powered. More specifically, the present invention relates to a system for surge protection of an object comprising a power supply unit connected to a secondary output of an external transformer, wherein the secondary winding of the external transformer is coupled in a star configuration, the center of the transformer The neutral point is connected to the downstream neutral conductor and the grounding electrode provided near the transformer.

[0002] In particular, the invention can be used as a system for lightning and surge protection of objects installed on a limited area, on the ground or on a building. Examples of such objects include devices equipped with antennas, such as GSM base stations. Surge protection devices for power supply units are generally known.

[0003] The protection device according to the present applicatio...

Claims

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