Signals - ABB RELION REX640 Technical Manual

1MRS759142 C
10.1.7
REX640
Technical Manual
limit value is exceeded. Outputs of MAPGAPC can be connected to the needed logic
and, for example, an event can be sent with MVGAPC.
The 10-minute mean values can be collected to an external substation monitoring
system. Collected data can be used in weekly reporting. If longer mean values are
needed, the collected 10-minute mean values can be used to calculate, for example,
two-hour mean values.
Typically, 10-minute THD or TDD mean values are collected from all three phases.
Individual harmonics and the fundamental frequency component can also be
collected.

Signals

Table 1439: CHMHAI Input signals
Name Type
I3P SIGNAL
Table 1440: CHMHAI Output signals
Name Type
SMNTHD_A FLOAT32
SMNTHD_B FLOAT32
SMNTHD_C FLOAT32
SMNTDD_A FLOAT32
SMNTDD_B FLOAT32
SMNTDD_C FLOAT32
SMNDC_A FLOAT32
SMNDC_B FLOAT32
SMNDC_C FLOAT32
SMNH01_A FLOAT32
SMNH01_B FLOAT32
SMNH01_C FLOAT32
SMNH02_A FLOAT32
SMNH02_B FLOAT32
SMNH02_C FLOAT32
Table continues on next page
Power quality measurement functions
Default Description
- Three-phase currents
Description
Mean THD for phase A in 3 s, 1 min or 5 min mean
(%)
Mean THD for phase B in 3 s, 1 min or 5 min mean
(%)
Mean THD for phase C in 3 s, 1 min or 5 min mean
(%)
Mean TDD for phase A in 3 s, 1 min or 5 min mean
(%)
Mean TDD for phase B in 3 s, 1 min or 5 min mean
(%)
Mean TDD for phase C in 3 s, 1 min or 5 min mean
(%)
Shorter mean value of DC component for Phase A
(%)
Shorter mean value of DC component for Phase B
(%)
Shorter mean value of DC component for Phase C
(%)
Shorter mean value of basic freq. for Phase A (%)
Shorter mean value of basic freq. for Phase B (%)
Shorter mean value of basic freq. for Phase C (%)
Shorter mean value of 2nd harmonic for Phase A
(%)
Shorter mean value of 2nd harmonic for Phase B
(%)
Shorter mean value of 2nd harmonic for Phase C
(%)
Section 10
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