Đang chuẩn bị liên kết để tải về tài liệu:
xây dựng trạm bts phần 2

Đồng thời, mở rộng vùng phủ sóng đến vùng sâu, vùng xa, biên giới, hải đảo góp phần thúc đầy phát triển KT-XH, đảm bảo an ninh, quốc phòng; công tác chống lụt bão Có thể nói việc đầu tư xây dựng các trạm BTS có ý nghĩa rầt lớn về mặt kinh tế - xã hội và vô cùng quan trọng đối với an ninh quốc phòng. | Installing the Installation Block on the Base Align the installation block with the installation holes in the base. Ensure that the rear of the installation block is at the same surface as the rear of the base. Use a torque wrench to tighten the expansion bolt to 45 N m. Installation block on the base Base M 12x35 bolt Spring washer 12 Testing the Insulation Between the Base and the Expansion Bolt Set a multimeter to the megohm position. Measure the resistance between the base and the expansion bolt. If the resistance is greater than or equal to five megohms you can infer that the base is insulated from the ground and the test is passed. If the resistance is smaller than five megohms you can infer that the base is not insulated from the ground. Take proper measures to insulate the base from the ground. Multimeter Lift the cabinet onto the base. Then push the cabinet so that the installation block on the base is in complete contact Installation block on the base Installation block in the cabinet 9 b Fastening the Cabinet to the Base in Note If the cabinet is installed with the power subrack before delivery you should remove the beam of the lower enclosure from the cabinet before tightening the bolts. At the front of the cabinet fasten the cabinet to the base by using M 12x25 bolts. Then use a torque wrench to tighten the bolts to 45 N m. Installing the Cabinets in stack Mode Installing a Single Cabinet Install the lower cabinet by referring to Installing the Cabinet on the Concrete Floor and Installing the Cabinet on the ESD Floor. Removing the Upper and Lower Horizontal Beams from the Upper Cabinet H Note For a newly deployed BTS. you should remove the horizontal beam of the lower enclosure in the lower cabinet if the lower cabinet is configured with the power subrack. In other cases you need not remove the horizontal beam of the lower enclosure in the lower cabinet. You need not remove the horizontal beam of the lower enclosure in the upper cabinet. When stacking