Table of Contents
Advertisement
1MRK 505 378-UEN Rev. K
IED
CLOSECB
Trip
CBCLOSED
CBREADY
IEC04000202 V3 EN-US
Figure 54:
11.10.2.1
Preparation of the verification
1.
Check the function settings on the local HMI under Main menu/Settings /IED Settings/
Control /Autorecloser79,5(0–>1)/SMBRREC:x(79,5(0–>)):x
If any timer settings are reduced to speed up or facilitate the testing, they shall be set to normal
after testing. A temporary label on the IED can be a reminder to restore normal settings after
which a verification test should be performed.
2.
Decide if a synchrocheck function SESRSYN shall be included in the test.
If SESRSYN as an internal function or external device is not operated by the injection, input
signal SYNC must be connected as a permanent high signal or controlled by a switch.
3.
Read and make notes of the reclosing operation counters on the local HMI under Main menu /
Test/Function status /Control/AutoRecloser79,5(0–>1) /SMBRREC(79,5(0–>1)):x
Possibly reset the counters to Zero. Counters are reset in the reset menu.
4.
Make arrangements for the simulation of the CB, for example as in Figure 54.
5.
Make arrangements for indication, recording and time measurements.
The signals for CBCLOSED, START, CLOSECB, READY and other relevant signals should
preferably be arranged for event recording with time tagging. If that is not possible, other
means of time measurement and recording should be arranged.
11.10.2.2
Switching the auto recloser to On and Off On and Off
1.
Set the Operation setting to Off and check the state.
2.
Set the Operation setting to On and check the state, including SETON and READY.
The circuit breaker should be closed and ready.
3.
If external control inputs OFF/ON are used, check that they work. Set ExternalCtrl = On and
use the control inputs to switch On and Off, and check the state of the function.
Line differential protection RED670
Commissioning manual
Simulating the CB operation by a bi-stable relay/breaker simulator and manual
switches
© 2017 - 2022 Hitachi Energy. All rights reserved
Testing functionality by secondary injection
BR
SC
ST
SRY
To test
set
IEC04000202-3-en.vsd
Section 11
+
-
M12400-40 v8
M12400-79 v9
213
Advertisement
Table of Contents
