L3447
Emax DC
60/108
L3728
Model
Scale
Page No.
Doc. No.
Apparatus
1SDH000635R0002
t [s]
10
-1
1
10
10
2
10
3
10
4
-0.1
x Pn
0
-0.3
-0.4
-0.2
10
0.5 … 25
0.5
25
-0.3
-0.1
-0.3 … -0.1
RP
13.2.10.7 Trip curves for function RP
13.3 Putting into service
13.3.1 Connections
For the connections provided by the user, it is recommended that you comply strictly with the recommendations contained
in this document.This will enable us to satisfy all the international reference standards and guarantee perfect operation of
the relay even under severe environmental and electromagnetic conditions.
Pay particular attention to the types of cable, the connections to earth and the recommended maximum distances.
13.3.2 TC connection test
If the PR123/DC was installed by the user, it is important, before closing the CB, to check the last line on the display when
the relay is turned on for the first time via a PR030/B battery unit. No TC disconnected messages must appear; if they do,
do not close the circuit-breaker immediately and make the correct connections.
13.3.3 Test
Before putting into service, a test can be conducted by means of the specific "Auto test" function which
can be activated on the PR123/DC. A positive result is shown on the display.
Then a test can be conducted on the whole TC chain, again using the specific function (Trip test). A positive
result is shown by the circuit-breaker opening.To run a Trip Test, press the “i Test” button and the “Enter”
button simultaneously.
Check the open or closed state of the circuit-breaker on the same "PR123/DC Test" screen, checking that
the CB is closed and de-energized.
13.3.4 Checking connections
After making the initial settings, to ensure that the voltage sockets are properly connected on the power busbars, check
whether the release come on when there is a voltage on the power input terminals and the CB is open and without any Vaux.
If is not the case, there is no guaratee that the unit will function when powered from the busbar voltages without any Vaux.
Contact ABB SACE.
1/6
CB open
Auto Test
Trip Test (disabled)
CB status
Test
