AN4121

Experimental results

Doc ID 023243 Rev 1

13/26

4

Experimental results

The tests have been conducted on a three-phase metering demonstration board with the

Results are referred to the full scale dynamic range of the current channel (“FS” in

Table 7),

4.1

Three-phase energy measurement accuracy

4.1.1

Test with symmetrical voltages and balanced load at PF = 1

This three-phase energy measurement has been performed in the following conditions:

Table 7.

Three-phase energy measurement

I [A]

% of FS [%]

error [%]

22,5

450%

100%

0,097%

16

320%

71%

0,076%

12

240%

53%

0,040%

10

200%

45%

0,035%

8

160%

36%

-0,008%

5

100%

22%

0,027%

2

40%

9%

0,035%

1

20%

4%

-0,065%

0,5

10%

2%

-0,087%

0,25

5%

1%

-0,096%

0,1

2%

0,4%

-0,087%

0,05

1%

0,2%

-0,096%

0,025

0,5%

0,1%

-0,096%

0,01

0,2%

0,04%

-0,352%

0,005

0,1%

0,02%

-0,435%

0,0025

0,05%

0,01%

-0,487%