This standard specifies the electromagnetic compatibility requirements and test methods for telecommunications network equipment, and provides corresponding electromagnetic compatibility performance criteria for different products. The types and scope of telecommunications network equipment can be found in the introduction. 2 Normative References: The clauses in the following documents become clauses of this standard through reference in this standard. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB 9254 Radio Disturbance Limits and Measurement Methods for Information Technology Equipment (GB 9254-1998; idt CISPR 22:1997) GB/T 6113.1-1995 Specification for Radio Disturbance and Immunity Measurement Equipment GB/T 17618 Information Technology Equipment Immunity Limits and Measurement Methods (GB/T 17618-1998, idt CISPR 24; 1997) GB 17625.1 Limits for Harmonic Current Emitted by Low Voltage Electrical and Electronic Equipment (Input Current per Phase of Equipment ≤ 16 A) (GB17625.1-1998. eqv IEC 61000-3:1995) GB 17625.2 Electromagnetic Compatibility, Limits, Limits for Voltage Fluctuations and Flashing in Low Voltage Power Supply Systems for Equipment with a Rated Current of No More than 16A (GB 17625.2-1999. idt IEC 61000-3-3: 1994) GB/Z17625.3 Electromagnetic Compatibility, Limits, Limits for Voltage Fluctuations and Flashing in Equipment with a Rated Current of No More than 16A (GB/Z17625.3-2000, idt IEC 61000-3-5; 1994) GB/T 17626.2 Electromagnetic Compatibility Testing and Measurement Techniques, Electrostatic Discharge Immunity Test (GB/T 17626.2-1998. idtIEC 61000-4-2:201995) GB/T 17626.3 Electromagnetic Compatibility, Testing and Measurement Techniques, Radio Frequency Electromagnetic Field Radiation Immunity Test (GB/T 17626.3-1998, idt lEC 61000-4-3:201995) GB/T 17626.4 Electromagnetic Compatibility, Testing and Measurement Techniques, Electrical Fast Transient Pulse Group Immunity Test (GB/T 17626.4-1998, idt lEC 61000-4-4:201995) GB/T 17626.5 Electromagnetic Compatibility, Testing and Measurement Techniques, Surge (Impact) Immunity Testing (GB/T 17626.5-1999, idtIEC 61000-4-5: 1995) GB/T 17626.6 Electromagnetic Compatibility Testing and Measurement Techniques, Conducted Disturbance Immunity Induced by RF Fields (GB/T 17626.6-1998. idt IEC 61000-4-6: 1996) GB/T 17626.8 Electromagnetic Compatibility, Testing and Measurement Techniques, Power Frequency Magnetic Field Immunity Testing (GB/T 17626.8-1998. idtIEC 61000-4-8; 1993) GB/T 17626.11 Electromagnetic Compatibility Testing and Measurement Techniques, Voltage Dips Short time interruption and voltage change immunity test (GB/T17626.11-1999, idt IEC 61000-4-11:1994) YD/T 950 Technical requirements and test methods for overvoltage and overcurrent protection of telecommunications switching equipment YD/T 870 Requirements and test methods for overvoltage and overcurrent resistance of user terminal equipment IEC 61000-3-4: Limits for harmonic current emitted by low-voltage electrical and electronic equipment (equipment input current ≥> 16 A per phase) IEC 61000-4-29 Electromagnetic Compatibility - Testing and Measurement Techniques - Voltage Dips, Short Interruptions, and Voltage Variations Immunity Tests for DC Power Input Ports
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