DEMA CPM 310 G, User Manual

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ARCL Auto-Recloser Settings Menu
Auto-reclosing is a widely used control function, which
provides rapid pick up of the network when black-outs
caused by temporary faults occur and mostly eliminates
the need of manual intervention to those types of
faults; while blocking itself if the fault is found out to
be permanent, any manual intervention occurs or other
predefined conditions are present.
The picture on the top of this page shows the initial
screen when the Auto-Recloser menu is entered, while
the pictures below it shows the full menu content. The
menus that provide settings options for specific
protection and control functions will be examined in the
following pages.
The CPM 310 G auto-recloser function has the following
characteristics:
 Auto-reclose shots up to 4 cycles,
 Definite time reset characteristics,
 Definite time inhibition function,
 Independent settings for each individual function of
phase overcurrent protection, earth overcurrent
protection and auxiliary timers,
 2 independent auto-reclose settings groups for G1
and G2,
 Self-blocking features to provide maximum service
security:
o
Blocking on manual tripping of CB,
o
Blocking on manual closing of CB if any faults occur
within the inhibition time interval,

Auto-reclose cycle measurement, alarm and event
recording,
 Visualization of auto-recloser condition via
programmable LEDs.
Settings that are shown on the pictures on the left side
are explained below.
Auto Recloser
Can be set as “Active” or “Passive”, to have the control
into or out of service.
tD1, 2, 3, 4
Settings for the dead time intervals between the shots.
Setting range is (0.01-300.0) s.
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