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Appendix A: Lightning Proof and Surge Signal Proof

This product adopts TVS lightning proof technology to prevent damage by a lightning strike below 1500

W and surge impulse signals. However it is also necessary to ensure that the following precautions are

taken to ensure electrical safety:

l Keep the communication cables at least 50 meters away from high voltage equipment or cables.

l Where possible locate outdoor cables under eaves to provide best protection.

l In an open area run cables in steel tubing and attach a single point ground to the tube.

l In areas prone to thunderstorms or high EMF (such as a high voltage transformer substation),

additional lightning proof equipment must be installed.

l Always design the installation taking account of the building lightning proof requirements and

grounding of outdoor equipment in accordance with the national and industrial standards.

l The system must be grounded with equal potentials. The earth ground connection must satisfy

anti-interference and electrical safety requirements and must not short circuit the high voltage

electricity network. When the system is grounded separately, the resistance of the down conductor

should be  4 and the sectional size of the down conductor should be  25mm2 (refer to Fig

26).

Figure 26

NOTE: This technology HELPS

prevent the dome and camera from being

damaged by lightning strikes but under no circumstances does it guarantee

protection. Domes or cameras struck by lightning will not be covered by

the warranty.

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ExcelPTZ PTZ605 series Bedienerhandbuch Seite 57