Signals - ABB RELION REX640 Technical Manual

Section 10
Power quality measurement functions
10.2.7
1618
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 1447: VHMHAI Input signals
Name Type
U3P SIGNAL
Table 1448: VHMHAI Output signals
Name Type
SMNTHD_A FLOAT32
SMNTHD_B FLOAT32
SMNTHD_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
SMNH03_A FLOAT32
SMNH03_B FLOAT32
SMNH03_C FLOAT32
Table continues on next page
Default Description
- Three-phase voltages
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
(%)
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
(%)
Shorter mean value of 3rd harmonic for Phase A
(%)
Shorter mean value of 3rd harmonic for Phase B
(%)
Shorter mean value of 3rd harmonic for Phase C
(%)
1MRS759142 C
REX640
Technical Manual