ABB 615 Series - Operation Principle; Signals

The typical additional operate time increase is +2 ms for all the receiver
application functions (using either local or remote samples) when SMV is
used.
3.14.4.3 Operation principle
The ALARM in the receiver is activated if the synchronization accuracy of the sender or the
receiver is either unknown or worse than 100 ms. The output is held on for 10 seconds after
the synchronization accuracy returns within limits.
ALARM is activated when two or more consecutive SMV frames are lost or late. A single
loss of frame is corrected with a zero-order hold scheme. In this case, the effect on
protection is considered negligible and the WARNING or ALARM outputs are not activated.
The output is held on for 10 seconds after the conditions return to normal.
The SMV Max Delay parameter defines how long the receiver waits for the SMV frames
before activating the ALARM output. This parameter can be accessed via Configuration/
System/Common. Waiting of the SMV frames also delays the local measurements of the
receiver to keep them correctly time aligned. The SMV Max Delay values include
sampling, processing and network delay.
The WARNING output in the receiver is activated if the synchronization accuracy of the
sender or the receiver is worse than 4 μs. The output is held on for 10 seconds after the
synchronization accuracy returns within limits.
The WARNING output is always internally active whenever the ALARM output is active.
3.14.4.4 Signals
Table 66: RESTVTR Input signals
Name
Type Default Description
VG INT32-UL0 0 IEC 61850-9-2 residual
voltage
Table 67: RESTVTR Output signals
Name
Type Description
ALARM BOOLEAN Alarm
WARNING BOOLEAN Warning
Section 3 1MAC059074-MB A
Basic functions
134 615 series ANSI
Technical Manual