在标准IEC-61000 中关于电压变化特性的定义为:
voltage change characteristic, ΔU(t)
the time function of the r.m.s. voltage change evaluated as a single value for each successive half period between zero-crossings of the source voltage between time intervals in which the voltage is in a steady-state condition for at least 1 s.
Parameter values recorded during the test:
Vrms at the end of test (Volt): 230.02
Highest dt (%): -0.76 Test limit (%): 3.30 Pass
Time(mS) > dt: 0.0 Test limit (mS): 500.0 Pass
Highest dc (%): 0.67 Test limit (%): 3.30 Pass
Highest dmax (%): -0.74 Test limit (%): 7.00 Pass
最大相对电压变化(maximum relative voltage change)dmax 为何会小于 相对电压变化特性(relative voltage change characteristic) d(t)?
dmax 是 波动的最大电压减去 最小电压 比上 额定电压,总应该大于d(t)的
再翻了一下标准,查了一下定义,愈发混乱了,就发了上面的贴子