Sidactor Protection Thyristor Products Page 47 SIDACtor Protection Thyristor Products

SIDACtor Protection Thyristors 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/23/17 This standard defines test procedures to evaluate equipment resistibility to uni-directional surges resulting from electrical switching and nearby lightning strikes. The switching transients are associated with power system switching disturbances, and various system faults. The lightning transients are associated with direct lightning strokes into the common ground of applications, indirect lightning strokes such as cloud to cloud, and nearby lightning strikes. Two different coupling methods are discussed in this document: 1) capacitive coupling 2) arrestor coupling Capacitive coupling is the preferred method for unbalanced I/O circuits while arrestor coupling is the preferred coupling method for unshielded balanced circuits (such as telecommunication). IEC 61000-4-5 Testing and measurement techniques - Surge immunity (lightning surge effects) test Table 3.37 - Test requirements Table 3.36 - Test levels Level Description Class 0 Well-protected environment Class 1 Partially protected environment Class 2 Well separated cables Class 3 Cables run in parallel Class 4 Multi-wire cables for both electronic & electrical circuits Class 5 Connection to telecommunications cables and overhead power lines (low density populated areas) Class x Special testing as defined in product specification Figure 3.10 - 1.2/50-8/20 CWG simplified schematic R C (charging resistor) R S1 (impulse duration shaping resistor) (impulse duration shaping resistor) R S2 L T (rise time shaping inductor) R M (impedance matching) C HV supply Figure 3.11 - 10/700-5/320 CCITT simplified schematic R C (charging resistor) 20F HV supply 15 25 50 .2F Class Surge definition Test Levels DC Power supply Unsymmetrical interface (long distance bus) Symmetrical interface Data Bus (short distance) AC Power Supply connected to Mains AC Power Supply NOT connected to Mains Differential Common mode Differential Common mode Common mode Common mode Differential Common mode Differential Common mode Zs = 2 Zs = 12 Zs = 42 Zs = 42 Zs = 40 * Zs = 42 Zs = 2 Zs = 12 Zs = 2 Zs = 12 0 Voltage/current N/A Waveforms s 1 Voltage/current N/A 500 V/ 11.90A 500V/ 12.5A N/A 500 V/ 11.90A N/A Waveforms s N/A 1.2/50- 8/20 10/700- 5/320 N/A 1.2/50 - 8/20 N/A 2 Voltage/current N/A 500 V/ 11.90A 1kV/ 23.80A 1kV/ 25A 500V/ 11.90A 500A/ 250A 1kV/ 83.33A N/A Waveforms s N/A 1.2/50-8/20 10/700- 5/320 1.2/50-8/20 N/A 3 Voltage/current 1kV/ 500A 2kV/ 166.67A 1kV/ 23.8A 2kV/ 47.6A 2kV/ 50A 2kV/ 47.6A 1kV/ 500A 2kV/ 166.67A 1kV/ 500A 2kV/ 166.67A Waveforms s 1.2/50-8/20 10/700- 5/320 1.2/50-8/20 4/5 Voltage/current 2kV/ 1kA 4kV/ 333.33V 2kV/ 47.6A 4kV/ 95.24A 2kV/ 50A 4kV/ 95.24A 2kV/ 1kA 4kV/ 333.33V 2kV/ 1kA 4kV/ 333.33V Waveforms s 1.2/50-8/20 10/700- 5/320 1.2/50-8/20 x Voltage/current Per special conditions in the product specification Waveforms s *Simultaneous surge is applied, so effective Zs = 40 Regulatory Requirements (continued)

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