Document: NRC Regulatory Guide
Document ID: 82021804-a487-471b-a76c-095315525b53
Document Type: regulatory_guide
Title: Guidelines for Evaluating Electromagnetic and Radio-Frequency Interference in Safety-Related Instrumentation and Control Systems (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1628/ML16281A531.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.180
CFR Part: 
CFR Title: 

Content:
lity Operating Envelopes for Power Leads 4.1.3 IEC Conducted Susceptibility Tests—Power Leads The IEC counterparts to the CS101 and CS114 tests are IEC 61000-4-13, IEC 61000-4-16, and IEC 61000-4-6. Operating envelopes for IEC 61000-4-13 correspond to the test levels for Class 2 devices and are shown in Tables 10 and 11. For the IEC 61000-4-16 test, operating envelopes correspond to the Level 3 test levels and are shown in Table 12. The operating envelope for IEC 61000-4-6 corresponds to the Level 3 test level of 140 dBµV. The test levels established by these envelopes are acceptable to NRC staff for evaluating conducted susceptibility along power leads. DG-1333, Page 20 Table 10 Harmonics Operating Envelope for IEC 61000-4-13 Harmonic No. (n) Level (% of supply voltage) 2 3 3 8 4 1.5 5 9 7 7.5 9 2.5 11 5 13 4.5 17 3 19 2 23 2 25 2 29 1.5 31 1.5 35 1.5 37 1.5 Table 11 Interharmonics Operating Envelopes for IEC 61000-4-13 Frequency Range (Hz) Level (% of supply voltage) 20 - 120 2.5 120 - 600 5 600 - 900 3.5 900 - 1200 2 1200 - 2400 1.5 Table 12 Operating Envelopes for IEC 61000-4-16 Disturbance Test level dc and power line frequency, continuous disturbance 10 Vrms dc and power line frequency, short-duration disturbance 100 Vrms Conducted disturbance, 15 Hz to 150 kHz 10-1 Vrms (15-150 Hz) 1 Vrms (150-1.5 kHz) 1-10 Vrms (1.5-15 kHz) 10 Vrms (15-150 kHz) 4.2 EMI/RFI Conducted Susceptibility Testing—Signal Leads MIL-STD-461G contains test methods that can be applied to address conducted EMI/RFI susceptibility for interconnecting signal leads. In addition, IEC 61000-4 specifies test methods that can be applied to characterize equipment susceptibility to conducted EMI/RFI along interconnecting signal leads. The test methods acceptable to the NRC staff with regard to conducted susceptibility testing for signal leads in safety-related I&C systems in nuclear power plants are presented in Tables 13 and 14. Table 13 DG-1333, Page 21 lists the EMI/RFI test methods for