Eaton Cutler-Hammer Digitrip RMS 510 - Page 36

AD 33-855-4
Page 35
8,5
Primary
Injection
Testing
I
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PRIMARY
INJEGTION
TESTING
CAUSES
HEAT-
ING
OF CIRCUIT
BREAKER
AND
RETROFIT
COMPONENTS.
FAILURE
TO
STOP
THE
TESTS
WHEN
INSTRUCTED
WILL
CAUSE
SERIOUS
DAMAGE
TO
BOTH
THE
BREAKER
AND
RET-
ROFIT
COMPONENTS.
Primary
lnjection
verifies
the
complete
Breaker
Overcurrent
Protection
System,
including
the
Current
Sensors,
Rating
Plug,
Trip Unit,
and
the
interconnecting
wiring.
lt
involves
the
use of
a
tester
(e.g.:
Multi-amp
Tester
or
EIL)
to inject
single
phase
primary
current
through
the
Breaker
to
test
the Digitrip
RMS Overcurrent
Trip
System.
When
testing
on
Breakers
with
Current
Limiters,
the
Cunent
Limiters
should
be removed
and
replaced
by
copper
shorting
bars
during
testing.
Failure
to
do so
could
result
in compromising
the
expected
performance of
the Current
Limiters.
The
Current
Limiters
must be
reinstalled
after
testing
is
completed.
lf
all of
the tests
from
Table
8-1
yield
correct
results,
the
Trip
Unit is
functioning
properly. lf any
difiiculties
are
encountered
during
testing,
please
call Cutler-Hammer
at
1 -800-937-5487.
A.
8.5.1
Primary
lnjection
Test
Procedures
Prior
to
Primary
lnjection
Testing;
.
Defeat
Zone
lnterlocks;
.
Defeat
Unpowered
Thermal
Memory;
.
Defeat
Ground
Fault
trip
function;
and
.
Use
Auxiliary
Power.
During
Primary
lniection
Testing:
.
Reset
the
Trip Unit;
.
Reset
the
Trip Settings
(see
Table
8-1);
o
Close
the Breaker;
.
Conduct
the test
(see
Table
8-1);
o
Abort
the
Test
(see
Table
8-1); and
o
Record
the
Test Results.
-
Compare
the actual
results
with
the
expected
test
results
in Table
8-1
.
-
61 0,
810, &
910
Trip Units
will
display
the
elapsed
time
of
the test
and
then
display
the cause
of TriP
Code.
-
Press
the
Step
button
to view
the
test
current
magnitude
after
each
test.
-
Permanently
record
the results
to
verify
calibration
of
the
TriP SYstem.
After
Primary
lniection
Testing:
o
Reset
the
Trip Unit;
.
Confirm
the
Breaker
Status;
and
Confirm
the
Ground
Fault
Trip
Function
is
activated.
Etfective 9/01
ElT.il