5.1.2 接地电阻
a) 依据标准/规范:GB/T 16895.23 低压电气装置 第6部分:检验
b) 性能要求:屏蔽室的接地电阻至少应满足CNAS-CL01-A008的要求:接地电阻小于4 Ω。
c) 测量验证频次:首次验证后,每3~5年进行一次验证。
d) 报告要求:应由CNAS或其互认框架下授权的检测机构出具的报告,报告应包含测试点位置等相关信息,相关内容符合CNAS-CL01-A008的要求。
5.1.3 绝缘电阻
a) 依据标准/规范:GB/T 16895.23 低压电气装置 第6部分:检验
b) 性能要求:屏蔽室的绝缘电阻至少应满足CNAS-CL01-A008的要求:电源进线对屏蔽室金属壁的绝缘电阻及导线与导线之间的绝缘电阻应大于2 MΩ。
c) 测量验证频次:首次验证后,每3~5年进行一次验证。
d) 报告要求:应由CNAS或其互认框架下授权的检测机构出具的报告,报告相关内容符合CNAS-CL01-A008的要求。
2) CISPR 16-2-1 Specification for radio disturbance and immunity measuringapparatus and methods – Part 2-1: Methods of measurement of disturbances andimmunity – Conducted disturbance measurements
3) EN 55016-2-1 Specification for radio disturbance and immunity measuringapparatus and methods – Part 2-1: Methods of measurement of disturbances andimmunity – Conducted disturbance measurements
4) 相关标准等
b) 性能要求:屏蔽室的环境噪声电平应比相应适用标准规定的限值至少低20dB。
c) 测量验证频次:首次验证,其后实验室可自行规范每次测试前的环境噪声电平确认。
d) 报告要求:首次验证报告应由CNAS或其互认框架下授权的检测机构出具。
5.2 半电波暗室
5.2.1 屏蔽效能
a) 依据标准/规范:
1) GB/T 12190 电磁屏蔽室屏蔽效能的测量方法
2) EN 50147-1 Anechoic chambers - Part1.Shield attenuation measurement
备注:进行复测时,由于吸波材料已布置好,此时仅在天线能按照标准布置的部位进行屏蔽效能的测试。
b) 性能要求:半电波暗室的屏蔽效能应至少满足CNAS-CL01-A008的要求:
1) 14 kHz-1 MHz >60 dB
2) 1 MHz-1000 MHz >90 dB
3) 1 GHz-18 GHz >80 dB
c) 测量验证频次:首次验证后,每3~5年进行一次验证
d) 报告要求:应由CNAS或其互认框架下授权的检测机构出具的报告,报告应包含测试位置及布置图等信息,相关内容符合CNAS-CL01-A008的要求。
1) CISPR 16-1-4 Specification for radio disturbance and immunity measuringapparatus and methods - Part 1-4: Radio disturbance and immunitymeasuring apparatus - Antennas and test sites for radiated disturbancemeasurements
3) EN 55016-1-4 Specification for radio disturbance and immunity measuringapparatus and methods - Part 1-4: Radio disturbance and immunitymeasuring apparatus - Antennas and test sites for radiated disturbancemeasurements
4) ANSI C63.4 American National Standard for Methods of Measurement ofRadioNoise Emissions from Low-Voltage Electrical and Electronic Equipmentin the Range of 9 kHz to 40 GHz
5) ANSI C63.4a American National Standard for Methods of Measurement ofRadioNoise Emissions from Low-Voltage Electrical and Electronic Equipmentin the Range of 9 kHz to 40 GHz Amendment 1: Test Site Validation
b) 性能要求:半电波暗室的归一化场地衰减(NSA)
满足CNAS-CL01-A008的要求:±4 dB场地可接受原则。 NSA要求±4 dB
1) CISPR 16-1-4 Specification for radio disturbance and immunity measuringapparatus and methods - Part 1-4: Radio disturbance and immunitymeasuring apparatus - Antennas and test sites for radiated disturbancemeasurements
3) EN 55016-1-4 Specification for radio disturbance and immunity measuringapparatus and methods - Part 1-4: Radio disturbance and immunitymeasuring apparatus - Antennas and test sites for radiated disturbancemeasurements
b) 性能要求:半电波暗室的场地电压驻波比(SVSWR)满足CNAS-CL01-A008的要求:≤6.0dB。
1) IEC61000-4-3 Electromagnetic compatibility (EMC) - Part 4-3: Testing andmeasurement techniques - Radiated, radio-frequency, electromagnetic fieldimmunity test
2) EN 61000-4-3 Electromagnetic compatibility (EMC) - Part 4-3: Testing andmeasurement techniques - Radiated, radio-frequency, electromagnetic fieldimmunity test
3) GB/T 17626.3 电磁兼容 试验和测量技术 射频电磁场辐射抗扰度试验
b) 性能要求:电波暗室的场均匀域满足相关标准要求,如GB/T 17626.3-2016或IEC61000-4-3:2020等。
c) 测量验证频次:首次验证后,每3~5年进行一次验证
d) 报告要求:应由CNAS或其互认框架下授权的检测机构出具的报告。
5.2.7 辐射发射测试桌的影响评估
a) 依据标准/规范:
1) CISPR 16-1-4 Specification for radio disturbance and immunity measuringapparatus and methods - Part 1-4: Radio disturbance and immunitymeasuring apparatus - Antennas and test sites for radiated disturbancemeasurements
3) EN 55016-1-4 Specification for radio disturbance and immunity measuringapparatus and methods - Part 1-4: Radio disturbance and immunitymeasuring apparatus - Antennas and test sites for radiated disturbancemeasurements
4) ANSI C63.4 American National Standard for Methods of Measurement ofRadioNoise Emissions from Low-Voltage Electrical and Electronic Equipmentin the Range of 9 kHz to 40 GHz
2) CISPR 16-2-3 Specification for radio disturbance and immunity measuringapparatus and methods – Part 2-3: Methods of measurement of disturbances and immunity – Radiated disturbance measurements
3) EN 55016-2-3 Specification for radio disturbance and immunity measuringapparatus and methods – Part 2-3: Methods of measurement of disturbances andimmunity – Radiated disturbance measurements