ADE7752B datasheet(25/27 Pages) AD

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Preliminary Technical Data

ADE7752B

Rev. PrA | Page 25 of 27

Table 10. CF, F1, and F2 Minimum Frequency at No Load

Threshold

SCF

F1, F2 Minimum (Hz)

CF Minimum (Hz)

6.94E − 05

1.11E − 03

1.39E − 04

1.11E − 03

3.47E − 05

1.11E − 03

1.39E − 04

2.23E − 03

1.58E − 04

2.52E − 02

3.47E − 05

5.55E − 04

1.75E − 05

5.60E − 04

1.75E − 05

2.80E − 04

NEGATIVE POWER INFORMATION

The ADE7752B detects when total power, calculated as the sum

of the three phases, is negative. This mechanism can detect an

incorrect connection of the meter or generation of negative

active energy. The REVP pin output goes active high when

negative power is detected on the sum of the three phase inputs.

If positive active power is detected on the sum of three phases,

then REVP pin output is low.

The REVP pin output changes state at the same time as a pulse

is issued on CF. If the sum of the phases measure negative

power, then the REVP pin output stays high until the sum of the

phases measures positive power.

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