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P6002ACMC датащи(PDF) 135 Page - Teccor Electronics |
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P6002ACMC датащи(HTML) 135 Page - Teccor Electronics |
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135 / 212 page ![]() ITU-T K.20 and K.21 © 2002 Teccor Electronics 4 - 11 http://www.teccor.com SIDACtor® Data Book and Design Guide +1 972-580-7777 * One-minute rest between repetitions ** This test is not conducted if primary protection is used. Figure 4.3 Connection Appearances Table 4.10 K.20 Lightning Test Conditions for Telecom Equipment in Central Office/Remote Terminal Voltage (10x700 µs) Current (5x310 µs) Basic/Enhanced (A) Repetitions * Primary Protection Acceptance Criteria Single Port Metallic and Longitudinal Basic/Enhanced Multiple Ports Longitudinal Only Basic/Enhanced 1 kV/1.5 kV 25/37.5 ±5 None ** A 4 kV/4 kV 100/100 ±5 Installed if used A 1.5 kV/1.5 kV 37.5/37.5 ±5 None A 4 kV/6 kV 100/150 ±5 Installed if used A A 25 Ω B E Equipment Under Test Decoupling Elements Surge Generator A 25 Ω R3 = 25 Ω B E Equipment Under Test Decoupling Elements Surge Generator a) Transversal test b) Longitudinal test |
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