ABB REF615 Applications Manual page 80

Section 3
REF615 variants
74
A071370 V4 EN
Figure 36: Arc protection
ARC protection (ARCSARC1-3) and autoreclosing (DARREC1) are included as
optional functions.
The ARC protection offers individual function blocks for three ARC sensors that can
be connected to the IED. Each ARC protection function block has two different
operation modes, with or without the phase and residual current check. Operate
signals from the ARC protection function blocks are connected to the Master Trip
and also to the alarm LED 10 as a common operate indication.
The autorecloser is configured to be initiated by operate signals from a number of
protection stages through the INIT1-5 inputs. The INIT6 input in the autorecloser
function block is controlled by a binary input 2 (X110:3-4) enabling the use of the
1MRS756378 D
REF615
Application Manual