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EMC testing requirements for relay protection and automation products

Release time:

2010-06-19 00:00

Source:

　　The electromagnetic compatibility requirements of relay protection and automation products are basically divided into two parts: electromagnetic susceptibility ( EMS for short ) and electromagnetic interference ( EMI for short ).

　　Among them, EMS includes:

　　1) Oscillatory wave immunity (IEC 60255-22-1: 1988 (GB/T 14598.13-1998))

　　2) Electrostatic discharge (ESD) immunity (IEC 60255-22-2: 1996 (GB/T 14598.14-1998))

　　3) Immunity to radio frequency electromagnetic field radiation (IEC 60255-22-3: 1989 (GB/T 14598.9-1995))

　　4) Electrical fast transient/burst immunity (IEC 60255-22-4: 1992 (GB/T 14598.10-1996))

　　5) Surge (shock) immunity (IEC 60255-22-5: 2002)

　　6) Conducted disturbance immunity induced by radio frequency field (IEC 60255-22-6:2001)

　　7) Power frequency immunity (IEC 60255-22-7: 2003)

　　8) Power frequency magnetic field immunity (IEC 61000-4-8: 1998 (GB/T 17626.8-1998))

　　9) Pulse magnetic field immunity (IEC 61000-4-9: 1993 (GB/T 17626.9-1998))

　　10) Damped oscillation magnetic field immunity (IEC 61000-4-10: 1993 (GB/T 17626.10-1998))

　　11) Voltage pause, short interruption and voltage change immunity (IEC 61000-4-11: 1994 (GB/T 17626.11-1999))

　　12) Harmonic and interharmonic immunity (IEC 61000-4-13)

　　EMIs include:

　　1) Harmonic current emission limits (IEC 61000-3-2 (GB 17625.1: 1998))

　　2) Voltage fluctuation and flicker (IEC 61000-3-3 (GB 17625.2: 1999))

　　3) Limit value of radio frequency conducted emission (IEC 60255-25 (GB/T 14598.16))

　　4) Radiated emission limits (IEC 60255-25 (GB/T 14598.16))

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