3. Grounding and lightning protection PTP 600 Installation Guide General protection requirements Apply the practices and procedures detailed in the relevant national standards to all new site build activities. The following requirements are described in greater detail in the PTP 600 Series User Guide. Basic requirements The following basic protection requirements must be met: The equipment (ODU) must be in B’. ‘Zone A lightning protection unit (LPU) must be installed close to the ODU (the top LPU). The distance between the ODU and top LPU should be kept to a minimum. The drop length between the ODU and top LPU must not exceed 600 mm. The ODU and top LPU must be bonded in the following ways: top LPU to ODU; ODU to grounding system. An LPU must be installed within 600 mm (24 in) of the point at which the drop cable enters the building or equipment room (the bottom LPU). The drop must not be laid alongside a lightning air terminal. The drop cable shield must be bonded to the grounding system in order to prevent lightning creating a potential between the structure and cable, which could cause arcing, resulting in fire risk and damage to equipment. • The drop shield must be bonded at the building entry point. All ground cables must be minimum size of 10 mm2 csa (8AWG), preferably 16 mm2 csa (6AWG), or 25 mm2 csa (4AWG). Ground cable requirements When laying ground cables, the following requirements must be met: Ground cables must be run as short, straight, and smoothly as possible, with the fewest possible number of bends and curves. Drip loops are not allowed. All bends must have a minimum radius of 203 mm (8 in) and a minimum angle of 90°. A diagonal run is preferable to a bend, even though it does not follow the contour or run parallel to the supporting structure. All bends, curves and connections must be routed towards the grounding electrode system, ground rod, or ground bar. Grounding conductors must be securely fastened.
3. Grounding and lightning protection PTP 600 Installation Guide General protection requirements Apply the practices and procedures detailed in the relevant national standards to all new site build activities. The following requirements are described in greater detail in the PTP 600 Series User Guide. Basic requirements The following basic protection requirements must be met: The equipment (ODU) must be in ‘Zone B’. A lightning protection unit (LPU) must be installed close to the ODU (the top LPU). The distance between the ODU and top LPU should be kept to a minimum. The drop length between the ODU and top LPU must not exceed 600 mm. The ODU and top LPU must be bonded in the following ways: top LPU to ODU; ODU to grounding system. An LPU must be installed within 600 mm (24 in) of the point at which the drop cable enters the building or equipment room (the bottom LPU). The drop must not be laid alongside a lightning air terminal. The drop cable shield must be bonded to the grounding system in order to prevent lightning creating a potential between the structure and cable, which could cause arcing, resulting in fire risk and damage to equipment. • The drop shield must be bonded at the building entry point. All ground cables must be minimum size of 10 mm2 csa (8AWG), preferably 16 mm2 csa (6AWG), or 25 mm2 csa (4AWG). Ground cable requirements When laying ground cables, the following requirements must be met: Ground cables must be run as short, straight, and smoothly as possible, with the fewest possible number of bends and curves. Drip loops are not allowed. All bends must have a minimum radius of 203 mm (8 in) and a minimum angle of 90°. A diagonal run is preferable to a bend, even though it does not follow the contour or run parallel to the supporting structure. All bends, curves and connections must be routed towards the grounding electrode system, ground rod, or ground bar. Grounding conductors must be securely fastened.
RFP%2049600%20GHz%20Microwave%20Completion%20Project%202016%2008032016%20-%20FINAL.DOCX