eLine Technology ANPTZ-56-37R - Manual (Page 37)

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Lightning and Surge Protection
This product adopts Ceramic Gas Discharge Tube and TVS-class lightning protection
technology to effectively prevent such pulse signal damage caused by instantaneous lightning under
4000W or electric surge. But, for outdoor installing, on the premise of ensuring electric safety,
necessary protective measures should be taken according to practical situation:
 Signal transmission lines must be kept at least 50 meters from high voltage equipment and high
voltage.
 For outside, please select the place under eaves to layout the routing
 For open field, you must use underground sealed steel tube, and the steel tube must be adopted one
point grounding mode, and absolutely forbid adopted overhead wiring.
 In intense thunderstorms or high induced voltage areas (such as high voltage substations), must use
extra high-power lightning protection equipment and install lightning rod and others measures.
 The lightning protection and grounded design for outdoor installation and wiring must be combined
with requirements of building's lightening prevention, and comply with the relevant national
standards and industry standards.
 The system must be equipotential grounding. Grounded device must meet double requirements of
system anti-jamming and electrical safety, and can’t be short-circuited or hybrid-circuited with neutral
leg of forceful electric power. When system grounded alone, the impedance of grounded conductor
can’t more than 4 ohm, and sectional area of grounded wire can’t more than 25mm2 wire shorted.