ABB RELION REX640 - Page 1379

POSCLOSE
0
1
0
1
POSOPEN
t
close
t
open
T_TRV_OP= t
open
T_TRV_CL= t
close
open
close
close
Main contact
Figure 786: Travel time calculation when Travel time Clc mode is “From Pos to Pos
When setting Travel time Clc mode is “From Cmd to Pos”, the contact travel time of
the earthing switch or disconnector is calculated from the time between opening
or closing command and auxiliary contacts’ state change. The opening travel time
is measured between rising edge of OPEN_EXE command and POSOPEN auxiliary
contact. The closing travel time is measured between rising edge of the CLOSE_EXE
command and POSCLOSE auxiliary contact.
Main contact
POSCLOSE
0
1
0
1
POSOPEN
t
close
t
open
T_TRV_OP= t
open
T_TRV_CL= t
close
open
close
close
OPEN_EXE
CLOSE_EXE
Figure 787: Travel time calculation when Travel time Clc mode is “From Cmd to Pos”
The last measured opening travel time T_TRV_OP and the closing travel time
T_TRV_CL are available in the monitored data.
The maximum measured opening travel time T_TRV_MAX_OP and the maximum
measured closing travel time T_TRV_MAX__CL are available in the monitored data.
1MRS759142 F
Condition monitoring functions
REX640
Technical Manual
1379