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82
High speed and instantaneous phase
overcurrent protection (HSOC, IOC)
TEST
TEST-ACTIVE
BlockHSOC=Yes
HSOC-BLOCK
IL1
IL2
TEST
TEST-ACTIVE
BlockIOC = Yes
IOC-BLOCK
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&DOFXODWLRQV
The parameters for the high speed and instanteaneous phase overcurrent protection
functions are set via the local HMI or PST (Parameter Setting Tool). Refer to the Tech-
nical reference manual for setting parameters and path in local HMI.
This protection function must operate only in a selective way. So check all system and
transient conditions that could cause its unwanted operation.
&
Aˆp‡v‚Ã@hiyr
≥1
&
I>>>
&
I>>>
&
Aˆp‡v‚Ã@hiyr
≥1
&
IP>>
&
IP>>
&KDSWHU
&XUUHQW
≥1
HSOC-TRIP
≥1
IOC-TRIP
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