EN 61643
EN 61643 Low-Voltage Surge Protective Devices - Surge Protective Devices Connected to Low-Voltage Power Systems - Requirements and Test Methods IEC 61643 is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages. These devices are packaged to be connected to 50/60 Hz AC and DC power circuits, and equipment rated up to 1,000 V r.m.s. or 1,500 VDC. Performance characteristics, standard methods for testing and ratings are established for these devices that contain at least one nonlinear component that is intended to limit surge voltages and divert surge currents. Preview Standards
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