A
Lightning and Surge Protection
A.1 Protection measures
This product adopts TVS plate lightning protection technology to avoid damage caused by pulse
signal that is below 4000V, like instantaneous lighting stroke, surging, etc. According to the
actual outdoor situation, necessary protection measures must be taken, besides ensuring the
electrical safety.
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The distance between signal transmission wires and High-voltage equipment or high-
voltage cable is at least 50m.
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Outdoor wiring should better be routed under eaves as much as possible.
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In the open field, wiring should be buried underground in sealed steel pipe, and the steel-
pipe should be one-point grounding. Overhead routing method is forbidden.
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In strong thunderstorm area or high induction voltage areas (such as high-voltage
transformer substation), high power lightning protection apparatus and lightning conductor
are necessary to be added.
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The design of lightning protection and grounding of the outdoor devices and cables should
be considered together with the lightning protection demand of buildings. It also must
conform to the related national standards and industrial standards.
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The system should be equipotential grounded. The grounding equipment must conform to
the demands of system anti-jamming and electrical safety both and it must not appear short
circuit or mixed circuit with the zero conductor of strong grid. When the system is grounded
alone, the resistance should be no more than 4Ω. The sectional area of the grounding cable
should be no less than 25mm2. For grounding instructions, please refer to the Installation
Manual of Speed Dome.
IPC6512-Z30&6522-Z30
User Guide
A Lightning and Surge Protection
Issue 02 (2014-12-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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