ABB RELION 670 Series Technical Manual page 331

1MRK 502 066-UUS B
Y
Value Reported
(1st)
(*)Set value for t: XDbRepInt
IEC05000500 V2 EN-US
Figure 168: Periodic reporting
Magnitude dead-band supervision
If a measuring value is changed, compared to the last reported value, and the change is larger than
the ±ΔY pre-defined limits that are set by user (
the new value to a higher level. This limits the information flow to a minimum necessary.
Figure 169
the process is not continuous but the values are evaluated with a time interval of one execution
cycle from each other.
Technical manual
Value Reported
Y2
Y1
t (*)
shows an example with the magnitude dead-band supervision. The picture is simplified:
Value Reported
Y3
Y4
t (*) t (*)
UDbRepIn ), then the measuring channel reports
Impedance protection
Value Reported
Value Reported
Y5
t (*)
IEC05000500-2-en.vsdx
Section 7
t
SEMOD54417-163 v5
325