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AS8267 데이터시트(PDF) 32 Page - ams AG

부품명 AS8267
상세설명  Single-Phase 2-Current Energy Measurement Integrated Circuits with Microcontroller, RTC, Programmable Multi-Purpose I/Os
PDF  136 Pages
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제조업체  AMSCO [ams AG]
홈페이지  http://www.ams.com
Logo AMSCO - ams AG

AS8267 데이터시트(HTML) 32 Page - ams AG

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Data Sheet AS8267 / AS8268
Revision 1.0, 19-Jun-07
Page 32 of 136
Rate
Pulse
et
arg
T
)
ref
(
PR
Ni
=
(Important: Select a pulse rate which is close to mconst, for the Target Pulse Rate, so that the Pulse_lev stays
within reasonable limits.)
After this calibration the energy equivalent of 1 fast pulse (1i) is different!
Standard: internal pulse rate: 204,800i/klWh
[]
Ws
58
.
17
800
,
204
Ws
600
,
3
000
,
1
i
1
=
×
=
⇒
When a special pulse rate is required, the following formula applies:
[]
Ws
e
etPulseRat
arg
T
PulseRate
LED
800
,
204
600
,
3
000
,
1
i
1
×
×
=
⇒
Example:
Assuming a pulse rate of 1,000 is required:
1,600
→ 204,800
1,000
→ 204,800 x 1,000/1,600
[]
Ws
13
.
28
600
,
1
/
000
,
1
800
,
204
Ws
600
,
3
000
,
1
i
1
=
×
×
=
⇒
Mains Current Leads/Lags Mains Voltage
The i_lead flag in the SREG/Status register determines if the mains current leads the mains voltage or lags the
mains voltage. The data is provided for reactive power calculation, to establish if the measured power is
capacitive or inductive.



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