GB 50057-2010 第6.1.2条
| **** | **Surge Protective Device (SPD) Selection**: For power supply line SPDs serving **electronic information systems** in hotel buildings (such as fire control, security monitoring, and computer networks), the nominal discharge current \( I_n \) shall not be less than **20kA** (10/350μs waveform, Class I test) or **40kA** (8/20μs waveform, Class II test). The nominal discharge current of signal line SPDs shall not be less than **5kA** (8/20μs waveform). |