断路器噪音测量欧洲标准.doc

October 29, 2012Giovanni aldrovandiSound Tests噪声试验The sound pressure level relevant to the three poles circuit breaker has been calculated according to the 2003/10/CE European directive and to the chapter 5.1 of the DIN45635, in order to have thenoise level of the circuit breaker in the same condition of service.The daily exposition noise level and the peak instantaneous sound pressure level at any location 1,0 m from both three poles circuit breakers shall comply with the requirement为了得到和运行状况相同的断路器声压级，三相断路器的声压级按照2003/10/CE导则和DIN45635第5.1条进行计算。在距离三相断路器1米的任何位置，平均噪声水平和瞬间峰值噪声水平应该符合要求。2. Sound level tests configuration :2 噪声试验布置Environment环境Internal conditions : test measurements were performed indoor, in the mechanical test laboratory 内部状态：在户内进行测量Ambient noise (before and after tests) : 73 dB(A)环境噪声（试验前后）：73dB(A)Temperature : 28 C温度：28 CInstruments used使用的工具Integrator Sound Level Meter .噪声测试仪The Sound Level Meter, class 2, is in conformity with the international norm IEC 61672-1 Microphone.二级噪声测试仪，符合国际标准IEC 61672-1麦克风 Verification certificate realized the 05/12/05 according to the IEC 60651, IEC 60804 and IEC 1260standards.按照IEC 60651, IEC 60804 和 IEC 1260标准，05/12/05发布的认证证书Validity of the certification : 认证有效期：Measurements conditions测量条件The noise measurements have been taken at 1,0 m from the principal noise source : in front of theoperating mechanism of circuit breaker with the door in fully closed position.Height of the measured point : 1,5 m.The impulsive noise measurements from the spring operating mechanism have been taken of thepeak instantaneous sound pressure level during a circuit breaker open and close operation.In addition, the average impulse sound level have been also taken during a complete rated no loadcircuit breaker cycle C-0 with rearmament of mechanism springs.噪声测量应在离主声源1米处进行：在断路器的操作机构前，机构箱门完全关闭。测量点高度：1.5m弹簧操作机构的脉冲噪声峰值暂态噪声水平测量应在断路器分合闸操作中进行。另外，平均脉冲噪声水平也应通过一次完整的额定空载断路器C-O操作（包括弹簧机构储能）进行。Noise levels in 2003/10/CE European directive2003/10/CE欧洲标准的噪声水平Noise at Work Directive 2003/10/EC is officially known as the Directive 2003/10/EC of the EuropeanParliament and of the Council of 6 February 2003 on the minimum health and safety requirementsregarding the exposure of workers to the risks arising from physical agents (noise).The daily noise exposure level (Lex,8h) is the average noise exposure level for a nominal 8-hourworking day as defined by ISO 1999 and the peak sound pressure (LC,peak) is the maximum valueof the C-frequency weighted instantaneous noise pressure2003/10/EC操作标准中的噪声被官方认为是欧洲议会和委员会关于物理因素（噪声）造成工人危害的最低健康和安全要求的2003/10/EC标准。日噪声接触水平（Lex 8小时）是ISO 1999定义的每8个小时工作日的平均噪声接触水平，峰值噪声压力（LC,峰值）是“C”频率测量到的暂态噪声压力的最大值。For the average noise exposure level calculation (Lex, 8h) of a poles circuit breaker, we supposethat the circuit breaker makes an operation (CLOSING OPENING + REARMED) once in 8 hours.That means 3 operations per day and so 10 000 operations in 9 years (M2 conditions for the IUC62271-100 3.4.117).单相断路器的平均噪声水平计算（Lex, 8小时），我们假设断路器每8个小时进行一次（合分+储能）操作。这意味着每天操作3次，因此9年操作10000次（IEC62271-100 3.4.117 M2状态）。4. Measurements on a single pole4 单相测量 5. Noise levels for the three poles circuit breakers :5 3相断路器噪声水平According to 5.1 of DIN 45635, 5dB have to be added to previous results to get noise level on acomplete 3 poles circuit-breaker :We suppose the each single pole make the same noise level (Lp):For a complete three pole circuit breaker, the noise level in point A is the sum of each pole noise level : La = Lp(1) + Lp(2) + Lp(3) = 3xLp.Considering the decibel scale, La(dB) = 10xlog(3xLp) = 10xlog(3) + Lp(dB) = 4,7712 + Lp(dB)Lp( three pole circuit breaker) = Lp (single pole) + 5按照DIN 45635第5.1条，完整的3相断路器噪声水平应该是之前的结果加上5dB：我们假设每个单相噪声水平（Lp）相同：对于一个完整的三相断路器，A点的噪声水平是每相噪声水平的和: La = Lp(1) + Lp(2) + Lp(3) = 3xLp.考虑