Eaton Cutler-Hammer Digitrip RMS 510 - Digitrip RMS 510 Basic; Digitrip RMS 510 Basic Retrofit Kit Features; Selection and Content

AD 33-855-4
Page 21
SECTION
4
DIGITRIP
RMS
510
BASIC
RETROFIT
KITS
(WITHOUT
zoNE
INTERLOCKS)
4.1
Digitrip
RMS
510
Basic
Retrofit
Kit
Selection
and Gontent
The
Digitrip
RMS 510
Basic
Retrofit
Kit series
provides
basic Overcurrent
Protection
only.
The
Retrofit
Kits are
available
with the applicable
Digitrip
RMS
510 Trip
Unit
Overcurrent
Trip Func-
tions,
(i.e.:
Long
Time
(L);
Short
Time
(S);
lnstanta-
neous
(l);
and
Ground
Fault
Time
(G)
Delays).
The
combinations
available
are Ll,
LS, LSl,
LlG,
LSG'
LSIG.
The complete
Digitrip
RMS
510
Basic
Retrofit
Kit is
mounted
on
the Breaker.
Therefore,
no
Switchgear
Cell
modifications
or
wiring
are required.
Zone
lnterlocking
signals
from
the
Trip Unit
are not
wired
out
from
the Breaker.
The
External
Harness
(Figure
12-7) consists
of
a small
jumper
plug
that shorts
out
the Zone
lnterlock
signals
at the
Trip
Unit.
Refer
to Figure
4-1 for
the Retrofit
Kit
wiring con-
nections
on
the Breaker.
NOTE:
Figure
4-1 applies
to Retrofit
Kits
other
than SPB
and
DS Retrofit
Kits.
Refer
to the
DS or
SPB
lLs or
kit manual
for specific
wiring.
4.2
Digitrip
RMS 510
Basic
Retrofit
Kit
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:
1.
Basic
(L,
S, I, G)
Overcurrent
Protection,
as
selected;
2.
frue
RMS Sensing;
3.
lntegral
Trip Unit
Testing;
4. Unit
Status
lndicator;
5.
Local
Mode of
Trip
lndicators;
and
6. Selectable
l2t on Short
Time and
Ground
Fault
Time
Delays
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.
Etfective 9/01
ElT.il