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P6002ACMC датащи(PDF) 145 Page - Teccor Electronics |
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P6002ACMC датащи(HTML) 145 Page - Teccor Electronics |
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145 / 212 page ![]() UL 60950 3rd Edition (formerly UL 1950, 3rd edition) © 2002 Teccor Electronics 4 - 21 http://www.teccor.com SIDACtor® Data Book and Design Guide +1 972-580-7777 Passes 1, 2, 3, 4, and 5 shown in Figure 4.5 refer respectively to Tests L1 and M1, L2 and M2, L3 and M3, L4 and M4, and L5 shown in Table 4.17. Equipment may be subject to the overvoltage tests shown in Table 4.17. The tests are designed to simulate the following: • Contact with primary power • Short-term induction as a result of a primary power fault to a multi-earth neutral • Long duration power fault to Ground • Direct contact between the power mains and a telecommunications cable Notes: • ISDN S/T interface only L1, L2, L5, M1, and M2. • Reduce to 135% rated value of fuse if Test 3 resulted in open condition. • L4 and M4 are conducted only if SIDACtor VS ³ 285 VS and then run at voltage level just below VS. • For test conditions M1, L1, M5, and L5 a wiring simulator (MDL 2 A fuse) is used. • Compliance means no ignition or charring of the cheesecloth, and/or the wiring simulator does not open. • If the secondary protector simulator is used (MDQ 1.6), it is allowed to open. • Tests 2, 3, and 4 are required only if the unit is not a fire enclosure. • Figure 4.6 and Figure 4.7 show the M (metallic) and L (longitudinal) test connections. Figure 4.6 Metallic Connection Appearances Table 4.17 UL 60950 Overvoltage Test Test Voltage (VRMS) Current (A) Time Comments L1 600 V 40 1.5 s L2 600 V 7 5 s L3 600 V 2.2 30 min Reduce to 135% fuse rating L4 200 V 2.2 30 min Reduce to 135% fuse rating L5 120 V 25 30 min M1 600 V 40 1.5 s M2 600 V 7 5 s M3 600 V 2.2 30 min Reduce to 135% fuse rating M4 600 V 2.2 30 min Reduce to 135% fuse rating Equipment Under Test Telecommunication Network Connection Points Secondary Protector Simulator or Wiring Station Timed Switch Current Limiting Resistor Variable Voltage Source Equipment Earth |
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