I
E
D
C
L
O
S
E
C
M
D
T
r
i
p
C
B
5
2
a
C
B
R
E
A
D
Y
BR
SC
ST
SRY
To test
set
+
-
ANSI04000202-1-en.vsd
BI
BI
ANSI04000202 V2 EN-US
Figure 58: Simulating the CB operation by a bi-stable relay/breaker simulator and manual
switches
11.11.2.1 Preparation of the verification
M12400-40 v8
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 (25) shall be included in the test.
Section 11 1MRK 504 165-UUS Rev. J
Testing functionality by secondary injection
250 Transformer protection RET670
Commissioning manual
© 2017 - 2021 Hitachi Power Grids. All rights reserved