Marker balls are required to be provided in aviation zones in any span where the low point of the shield wire (OPGW/ OHGW) catenary is above 90 m AGL (Above Ground Level), which is equivalent to the low point of bottom conductor catenary at approximately 63 m AGL. Marker balls shall be placed on the top OHGW and OPGW, for aircraft warning.

-


 1) Marker balls are required to be provided in aviation zones in any span where the low point of the shield wire (OPGW/ OHGW) catenary is above 90 m AGL (Above Ground Level), which is equivalent to the low point of bottom conductor catenary at approximately 63 m AGL. Marker balls shall be placed on the top OHGW and OPGW, for aircraft warning.

2) Marker Balls shall be evenly spaced along the OHGW/ OPGW, at a maximum of 60m intervals.
3) Unlighted Marker Balls shall alternate on OHGW and OPGW with aviation colors: Orange, White, and Red, with aviation Orange markers always positioned at each end.
4) If less than four (4) marker balls (lighted or unlighted) are on the OHGW/ OPGW, all marker balls shall be aviation Orange.
5) Crossings with multiple transmission lines require additional marker balls when the outside lines on the adjacent structure are more than 60 m from the center of the primary structure.
6) The Marker balls shall be EHV (Extra High Voltage) qualified, with a special coating to reduce corona effects that can degrade or discolor a standard marker ball, or even lead to burning or melting.
7) The Marker Balls shall use spiral formed armor rods to securely attach to the OHGW/ OPGW.
− These spiral formed armor rods shall extend outward from the marker and actually reinforce and protect the OHGW/ OPHW at the point of attachment.
− These spiral formed armor rods shall be completely slip-proof, and also prevent damage to the OHGW / OPGW, often associated with clamps that dig into the OHGW /OPGW.
− The spiral formed armor rods shall be matched at the time of order to the specific size, type, and diameter of the OHGW/OPGW.

For more details:
Website:http://www.cdt-en.com/
Email:sophia@chendongtech.com
Phone/WhatsApp:+86-13929493960

评论

发表评论

此博客中的热门博文

Night Marking Red Obstruction Light System for Transmission Tower

-
图片
An overhead power line is a structure used in electric power transmission and distribution to transmit electrical energy along large distances. It consists of one or more conductors (commonly multiples of three) suspended by towers or poles. Red obstruction lights are used to increase conspicuity during nighttime. The red obstruction light system is composed of flashing omnidirectional lights (L-864) and/or steady-burning or flashing (L-810) lights. When one or more levels are comprised of flashing lights, the lights should flash simultaneously 1. Single Obstruction Light. A single red obstruction light (L-810) may be used when more than one obstruction light is required either vertically or horizontally, or when maintenance is needed, and can be installed within a reasonable time. Top Level. A single steady-burning light (L-810) may be used to identify low structures, such as airport instrument landing system buildings, as well as long horizontal structures, such as perimeter fenc...
阅读全文

Solar Obstruction Lights & Lighting System, Low Intensity Aviation Warning Light 6VDC Steady-Burning Red LED 32.5cd Solar Powered Aviation Obstruction Light for Tower Building

-
图片
  Solar Obstruction Lights & Lighting System, Low Intensity Aviation Warning Light 6VDC Steady-Burning Red LED 32.5cd Solar Powered Aviation Obstruction Light for Tower Building Low Intensity Solar Warning Lights (LIOL) with solar panel, multi LED type. In compliance with ICAO Annex 14 Type A, Type B and FAA L-810. As specified by Annex 14 of ICAO regulations, Low Intensity Obstruction Light can be used to warn the presence of obstacles up to 45m height, such as telecommunication towers, wind turbines, chimneys, cranes, buildings and other structures.This beacon is the simplest device according to ICAO standards. It provides steady burning red light with two types of intensity: ≥10cd for Type A, ≥32cd for Type B and≥32cd for Type E (flashing red light). In particular, the Low Intensity Lights with solar panelare used for night-time signalisation where the power supply does not arrive or where it is very weak. KEY FEATURES -  Solar Obstruction Lights & Lighting System B...
阅读全文

High-voltage lines are major hazards for low-flying aircraft. Placing beacons on pylons is not sufficient to ensure safety due to the very long spans of cable. - Day Marking The warning ball for high voltage lines is a visual anti-aircraft protection for overhead wires and OPGW wires in high voltage transmission lines. It is recommended that in the case of a sphere with a diameter of 60 cm, the high-voltage line should be marked every 30 meters at the most. - Night Marking Conductor marking lights serve as a specialized category of aircraft warning lights specifically crafted for overhead power lines. In contrast to overhead wire markers that rely on daylight, conductor marking lights are designed to be visible during nighttime. These lights enhance the visibility of transmission line catenary wires in the vicinity of airports, heliports, and locations spanning across rivers. It is built around induction and takes its power from the current of the line, by the intermediary of a multi-winding coil directly installed within the beacon. This allows our system to adapt to every line voltage.

-
图片
High-voltage lines are major hazards for low-flying aircraft. Placing beacons on pylons is not sufficient to ensure safety due to the very long spans of cable. - Day Marking The warning ball for high voltage lines is a visual anti-aircraft protection for overhead wires and OPGW wires in high voltage transmission lines. It is recommended that in the case of a sphere with a diameter of 60 cm, the high-voltage line should be marked every 30 meters at the most. - Night Marking Conductor marking lights serve as a specialized category of aircraft warning lights specifically crafted for overhead power lines. In contrast to overhead wire markers that rely on daylight, conductor marking lights are designed to be visible during nighttime. These lights enhance the visibility of transmission line catenary wires in the vicinity of airports, heliports, and locations spanning across rivers. It is built around induction and takes its power from the current of the line, by the intermediary of ...
阅读全文