14
Instruction Leaflet
I. L. 29-885D
Effective August 2011
Instructions for Digitrip RMS 510 Trip Unit
EATON CORPORATION
www.eaton.com
otee:
N
The "Trip Reset" button may be pushed down at any time . However,
should a test already be in progress, the test would be aborted .
4.4.3 Tripping the Breaker
WARNING
CIRCUIT BREAKER OPERATING MECHANISMS OPEN AND CLOSE THE MOVING
PARTS VERY FAST, AND WITH VERY HIGH ENERGY. TOUCHING THE MOVING PARTS
DURING TEST OPERATIONS CAN CAUSE INJURY. KEEP CLOTHING, HANDS, FEET,
AND OTHER PARTS OF YOUR BODY WELL AWAY FROM ALL MOVING PARTS DURING
TESTING. FOLLOW THE INSTRUCTIONS GIVEN FOR TESTING YOUR SPECIFIC TYPE
OF CIRCUIT BREAKER, FOUND IN THE APPROPRIATE INSTRUCTION LEAFLET LISTED
IN SECTION 5.
1 . Make sure that the circuit breaker is carrying no current (see
CAUTION notes under Section 4 .1) .
otee:
N
In the event it is decided to perform a "Breaker Trip Test" while load cur-
rent is flowing, make sure the circuit breaker is carrying no more than 50% of
the Long Delay Current Setting
I
r
. The Trip Unit will NOT execute your instruc-
tions to Test itself, when the load current exceeds 50% of
I
r
.
2 . Place the "TEST AMPS" selector switch (see Figure 19) in either
the "6T (or "GFT) position .
3 . Press and release the (Black) "TEST" push-button (see Figure 19) -
the test starts when the push-button is released .
4 . Should any of the various protection settings be less than the
selected "Test Amps" value, the curcuit breaker will trip and the
LED related to that function will light "RED" .
5 . Reset the Trip Unit by pressing and releasing the "Trip Reset"
push-button (see Figure 19) . All LEDs lit by the "Trip" test action
should turn "OFF" .
4.5 Testing the Battery (Inside the Rating Plug)
The battery has no part in the protection function of the Trip Unit .
The battery is provided only to maintain the "RED" LED indication of
the cause of TRIP in the Digitrip RMS 510 Trip Unit . The battery is
located in the rating plug along with a battery check push-button and
a green battery check LED (see Figure 9) .
4.5.1 Back-up Battery Check
The battery is a long life, lithium photo type unit . The status of the
battery can be checked at any time . Press and hold the "battery
check push-button and observe the "Green" LED as shown in Figure
9 . If the battery check LED does not light "Green", replace the bat-
tery . The condition of the battery has no effect on the protection
function of the Trip Unit . Even with the battery removed, the unit
will still trip the breaker in accordance with its settings . If however,
the battery is dead, the cause of TRIP LED will not be lit "RED" .
4.5.2 Replacing the Back-up Battery
The battery can be easily replaced from the front of the Trip Unit by
lowering the hinged cover of the rating plug as shown in
Figure 9 . The battery can then be removed by pulling the battery
tab as shown in Figure 9 . After the battery is replaced (or after an
Auxiliary Power Module is plugged into the Trip Unit), one or more of
the cause of Trip LED'S may be illuminated . It is necessary to press
and release the "TRIP RESET button to turn off any of the LEDs that
may be illuminated . Failure to do so can cause the battery to run
down again . The Trip Unit will then be ready to indicate the next
cause of trip .
otee:
N
The battery can be replaced at any time, even while the circuit breaker
is in service, without affecting the operation of the circuit breaker or its pro-
tection function .
CAUTION
CARE SHOULD BE EXERCISED WHEN REPLACING THE BATTERY TO INSURE
THAT THE CORRECT POLARITY IS OBSERVED. POLARITY MARKINGS ARE
VISIBLE ON THE RATING PLUG WHEN THE HINGED COVER IS OPEN AS
INDICATED IN FIGURE 9. IF THE BATTERY IS INSERTED WITH INCORRECT
POLARITY, THEN, AFTER AN OVER CURRENT OR SHORT-CIRCUIT TRIP, NO
LEDS WILL BE LIT RED TO INDICATE THE REASON FOR THE TRIP.
The replacement battery should be the same type or equivalent .
Acceptable 3 .0 volt lithium batteries may be obtained as type desig-
nation CR 1/3N or DL 1/3N .
