DPA 503N简介：
DPA 503N是由瑞士EMTEST生产的完全兼容的三相谐波和闪烁分析仪， 谐波和间谐波是由现代电子功率调节模块引起的。这种控制负载和降低功耗的大多数非线性模块是叠加在电源电压上的不需要频率的电压源。由负载电流变化引起的电压波动可能会影响照明系统的亮度或光谱分布。这种光刺激引起的视觉感觉不稳定的印象称为闪烁。DPA 503N 用于三相应用，但也支持单相应用。DPA.CONTROL是用于控制DPA 503N和电源ACS 500进行谐波和闪烁测试的软件。
DPA 503N产品特点：
- 实时数据采集
- 用于数据存储的内部硬盘
- 16 位 A/D 转换器
- 宽范围电流输入
- 宽范围电压输入
- 高精密的分析能力
- 用于控制和数据传输的 USB 接口
- 控制外部闪烁阻抗 AIF 503N
DPA 503N技术参数：
| HARMONICS ANALYSIS 谐波测试部分参数 | ||
| As per |
| |
| Design as per |
| |
| Harmonics | 1st – 50th order | |
| Grouping as per | IEC/EN 61000-4-7 (2009) for Interharmonics | |
| Synchronization | PLL; accuracy better than 0.005% | |
| Measuring window | Rectangular window (8,10,12,16 periods) | |
| Algorithm | FFT | |
| Smoothing filter | 1st order 1,5s digital low pass filter (on/off), selectable | |
| Anti-aliasing filter | 90dB | |
| Measurement duration | More than 30 hours, limited by the hard-disk capability (approx. 1MB/min of measuring data) | |
| Display | Vrms, Irms, Ipeak, Vpeak | |
| Harmonics | V, I, Phase, P, Q, S (2nd – 50th order) | |
| Power information | P, Q, S, Power factor, THD(U), THD(I), Crest factor(u), Crest factor(i) | |
| FLICKER ANALYSIS 闪烁部分参数 | ||
| As per |
| |
| Design as per |
| |
| Accuracy Pst and Plt | Better than 5% | |
| Accuracy dmax, dc, dt | better than 5%, according IEC 61000-4-15 | |
| Flicker data | Pst and Plt, Vrms, dmax, dc, dt, P50%S, P10%S, P3%S, P1%S, P0.1% | |
| Maximum values | Pst, dmax, dc, dt | |
| Observation period | Min. 1min, selectable | |
| Standard |
| |
| FLICKER IMPEDANCE AIF 503NX (OPTION; SEPARATE UNIT) 选件 | ||
| Models |
| |
| As per | IEC/EN 61000-3-3, IEC/EN 61000-3-11 and IEC 60725 for 3-phase applications | |
| Zref | all models | |
| Line L1, L2, L3 | 0.24ohm + j0.15ohm | |
| Neutral | 0.16ohm + j0.10ohm | |
| Ztest | excluding model AIF 503N16 | |
| Line L1, L2, L3 | 0.15ohm + j0.15ohm | |
| Neutral | 0.10ohm + j 0.10ohm | |
| Accuracy | Better than 3% | |
| R.M.S. current | Depending on selected model | |
| Each inductor is designed as a non-saturable air coil and is matched manually to the specified value. | ||
| OUTPUT FOR VERY LOW CURRENT (AIF 503N OPTION) 选件 | ||
| VLCM Kit AIF 503N | ||
| Measuring output | Separate output for very low current on phase L1 | |
| Current range | 5mA – 500mA | |
| Accuracy | < 1 % of measured value | |