ZHCUD84 August 2025
表 4-2 展示了在不同负载条件下且精度为功率因数 (PF) = 1 时的
精度测试结果。
| 条件 | 脉冲数 | 电流 | cos ϕ = 1i(0 度) | ANSI C12.1 (PF 1) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ERROR 1 | ERROR 2 | ERROR 3 | ERROR 4 | ERROR 5 | 平均误差 % | 基准差值 | 限值 (%) [0.5 级] | 限值 (%) [0.2 级] | 限值 (%) [0.1 级] | |||
| 1 | 3 | 1 | 0.023 | 0.190 | 0.008 | -0.184 | -0.189 | -0.030 | -0.027 | 1.0 | 0.4 | 0.2 |
| 2 | 6 | 1.5 | -0.153 | -0.180 | -0.109 | -0.088 | 0.028 | -0.100 | -0.097 | 0.5 | 0.2 | 0.1 |
| 3 | 6 | 3 | -0.102 | -0.066 | -0.039 | 0.008 | 0.028 | -0.034 | -0.030 | 0.5 | 0.2 | 0.1 |
| 4 | 22 | 10 | 0.035 | 0.028 | 0.028 | 0.013 | 0.008 | 0.022 | 0.026 | 0.5 | 0.2 | 0.1 |
| 5 | 29 | 15 | 0.005 | 0.014 | 0.016 | 0.008 | -0.002 | 0.008 | REF | 0.2 | 0.1 | 0.05 |
| 6 | 58 | 30 | -0.004 | -0.008 | -0.003 | -0.001 | -0.003 | -0.004 | 0.000 | 0.5 | 0.2 | 0.1 |
| 7 | 115 | 50 | -0.01 | -0.018 | -0.01 | -0.016 | 0 | -0.011 | -0.007 | 0.5 | 0.2 | 0.1 |
| 8 | 230 | 75 | 0 | -0.002 | -0.006 | -0.003 | 0 | -0.002 | 0.002 | 0.5 | 0.2 | 0.1 |
| 9 | 298 | 90 | 0.000 | -0.003 | 0.001 | 0.004 | 0.008 | 0.002 | 0.006 | 0.5 | 0.2 | 0.1 |
| 10 | 384 | 100 | 0.006 | 0.013 | 0.015 | 0.013 | 0.010 | 0.011 | 0.015 | 0.5 | 0.2 | 0.1 |