4.7 Arc protection ARCSARC
4.7.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Arc protection ARCSARC ARC 50L/50NL
4.7.2 Function block
A070686 V3 EN
Figure 267: Function block
4.7.3 Functionality
The arc protection ARCSARC detects arc situations in air insulated metal-clad
switchgears caused by, for example, human errors during maintenance or insulation
breakdown during operation.
The function detects light from an arc either locally or via a remote light signal.
The function also monitors phase and residual currents to be able to make accurate
decisions on ongoing arcing situations.
The function contains a blocking functionality. Blocking deactivates all outputs
and resets timers.
4.7.4 Operation principle
The function can be enabled and disabled with the Operation setting. The
corresponding parameter values are "On" and "Off".
The operation of arc protection can be described by using a module diagram. All
the modules in the diagram are explained in the next sections.
Section 4 1YHT530004D05 D
Protection functions
514 615 series
Technical Manual
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