Eaton Cutler-Hammer Digitrip RMS 510 - Retrofit Kits; Digitrip RMS 510 Retrofit Kit; Zone Lnterlocks) Selection and Content

AD 33-855-4
Page 23
SECTION
5 DIGITRIP
RMS 510
RETROFIT
KITS
WITH
ZONE
INTERLOCKS)
5.1
Digitrip
RMS 510
Retrofit
Kit
With
Zone
lnterlocks)
Selection
and
Content
The Digitrip
RMS
510 Retrofit
Kit
series
provides
basic Overcurrent
Protection
plus
Zone
lnterlock
capability.
The Retrofit
Kits are
available
with
the
applicable
Digitrip
RMS 510
Trip
Unit Overcurrent
Trip
Functions,
(i.e.:
Long Time
(L),
Shoft
Time
(S),
lnstantaneous
(l),
and Ground
Fault
Time
(G)
Delays).
The combinations
available
are
Ll,
LS, LSI'
LIG, LSG,
LSIG.
Zone
lnterlock signals
are
extracted
from
the
Trip
Unit by
the External
Harness.
The External
Harness
includes
a 2o-pin
plug,
which connects
to
the Cell Harness
Assembly.
All Retrofit
Kit
components
are
mounted on
the
Breaker,
except
the Cell
Harness
Assembly,
which
is mounted
in
the
Switchgear
Cell.
Figures
5-1
,
12-8 and
12-12
provide
the Retrofit
Kit wiring
connections
on the
Breaker
and
the Switchgear
Cell.
5.2
Digitrip
RMS 510
Retrofit
Kit
(With
Zone
lnterlocks)
Features
The
Digitrip
RMS 510
Trip Unit
has
the following
features
available
for customer
use,
when
applied
in the
Digitrip
RMS 510
Basic
Retrofit
Kit
with Zone
lnterlocks:
1 . Basic
(L,S,l,G)
Overcurrent
Protection,
as
selected.
2. True
RMS
Sensing;
3.
lntegral
Trip Unit
Testing;
4.
Unit Status
lndicator;
5.
Local
Mode of
Trip lndicators;
6.
Selectable
l2t on Shorl
Time
and Ground
Fault
Time
Delays
when those
options
are selected;
and
7.
Zone lnterlock
capabilities
of
the Breaker
Shoft
Time
and Ground
Fault
Delay
Functions,
when
those options
are
selected.
The Trip Unit
also
includes
provisions
to accept
the
required
Rating
Plug.
The
Rating Plug
is equipped
with
a battery
to
power
the local
mode of
trip
indicators.
Eflective 9/01
ElT.il