ABB REL 511 2.3 Serie Anwendungshandbuch Seite 272

262
Vierstufiger Erdschlußschutz (EF4)
Oper.mode
stfw-int
strv-int
e-int
3I0
EF4--BLOCK
EF4--BLKTR
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SOTF Oper.
e-int
stin2-int
stin4-int
block-int
EF4--BC
EF4--BLKTR
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Check of operation
mode and conditions
IN1>
&
50 ms
t
300 ms
t
0 = Off
1 = IN2>
t4U
2 = IN4>Res
t
t1
EF4--TRIN1
& t
EF4--STIN1
step 2 and 3 same as step 1.
Switch-onto-fault
EF4--TRSOTF
&
trsotf-int
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6WURP
step1
trin1-int
stin1-int
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99000058.vsd