System Components and Technical Data
SICAM A8000 / CP-8000 • CP-8021 • CP-8022 Manual
Unrestricted
153
DC8-037-2.02, Edition 10.2017
5.7.2.6 AI-8511
5.7.2.6.1 Functions
•
Acquisition of the measuring currents
─
Acquisition of currents through low-power measuring sensors using DFT algorithm,
1 signal sampling per millisecond
─
Nominal value 225 mV with 100% overrange and 16 bit resolution
•
Acquisition of the measuring voltages
─
Acquisition of voltages through low-power voltage transformers using DFT algorithm,
1 signal sampling per millisecond
─
Circuitry of the voltage inputs with phase voltages
─
Nominal value 3.25 V/
√
3 with 50% overrange and 16 bit resolution
─
Supervision of the measuring voltage
•
Acquisition of the frequency
─
Acquisition of frequency using signal zero crossing of voltage U1
─
Measuring range 45 Hz to 65 Hz (parameter-settable nominal frequencies of 50 Hz
and 60 Hz) with a resolution of 100 mHz
•
Calculation of Values from Acquired Values
─
Current r.m.s. value I1
tc
, I2
tc
, I3
tc
─
Phase voltage r.m.s. value U1
tc
, U2
tc
, U3
tc
*)
─
Phase-to-phase voltage r.m.s. value U12
tc
, U23
tc
, U31
tc
─
Frequency
tc
Voltage and current r.m.s. values undergo a linear (technological) adaption
tc
and are the
base for calculating further values
─
Zero current r.m.s. value I0
t
─
Zero voltage r.m.s. value U0
t
─
Active power P1
t
, P2
t
, P3
t
─
Active power P (total value)
t
─
Reactive power Q1
t
, Q2
t
, Q3
t
─
Reactive power Q (total value)
t
─
Apparent power Q1
t
, Q2
t
, Q3
t
─
Apparent power Q (total value)
t
─
Power factor 1
t
, 2
t
, 3
t
─
Power factor (total value)
t
─
Phase angle I1
t
, I2
t
, I3
t
, IN
t
─
Phase angle U12
t
, U23
t
, U31
t
─
Phase angle , U1
t
, U2
t
, U3
t
, U0
t
To calculated values the following functions are applied:
─
Revision
tc
─
Format conversion
t
−
Normalized, technologically scaled or short floating point
−
Suppression of zero range
─
Change monitoring
t
─
Fault detection
─
Spontaneous transmission of changes
t
Note
The previously mentioned functions are described in detail in the document
SICAM RTUs Common Func-
tions Peripheral Elements according to IEC 60870-5-101/104, chapter “Measurement in Three-Phase
Systems – I/O Module”
.
Содержание CP-8000
Страница 10: ...Open Source Software 10 Unrestricted SICAM A8000 CP 8000 CP 8021 CP 8022 Manual DC8 037 2 02 Edition 10 2017 ...
Страница 74: ...Function Packages 74 Unrestricted SICAM A8000 CP 8000 CP 8021 CP 8022 Manual DC8 037 2 02 Edition 10 2017 ...
Страница 468: ...Engineering via SICAM WEB 468 Unrestricted SICAM A8000 CP 8000 CP 8021 CP 8022 Manual DC8 037 2 02 Edition 10 2017 ...
Страница 524: ...Service 524 Unrestricted SICAM A8000 CP 8000 CP 8021 CP 8022 Manual DC8 037 2 02 Edition 10 2017 ...
Страница 556: ...Error Handling 556 Unrestricted SICAM A8000 CP 8000 CP 8021 CP 8022 Manual DC8 037 2 02 Edition 10 2017 ...
Страница 603: ...Use Cases SICAM A8000 CP 8000 CP 8021 CP 8022 Manual Unrestricted 603 DC8 037 2 02 Edition 10 2017 ...
Страница 604: ......