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1 the case fault
If you suspect that the PR122/P faulty, has alfunction has generated unwanted trip, advisable llo the
recom endations below very carefully from the easurem ents menu istoricals Trip:
1.4). Note down the type circuit-breaker, number poles, any accessories connected, In, Serial Number (see par.
1 tio it
Through BT030 wireless communication unit, the PR122/P can connected via wireless Pocket (PDA) standard PC, extending
the range information available user.4) and the version.13.
1 PR021/K and I030 its
The PR122/P can also connected the optional external PR021/K unit (see par. 16) indicate through potential-free power contacts alarms
and protection trips, and the HMI030 switchboard front unit display number information.
Model Apparatus Scale
L 2778
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2.
1 it
The PR030/B power supply unit external unit allowing powering Relay, Autotest and Trip Test, checking with open and installation of
new replacement units. means the ABB SACE SD-Pocket communication software, the values the currents flowing through
the circuit-breakers, the value the latest interrupted currents and protection settings, can read.
The completeness and accuracy the information given the ABB Assistance service will facilitate technical analysis the problem encountered,
and will allow carry out all actions useful for the user rapidly. Prepare brief description the opening (what LEDs and/or indications were displayed? when did happen?, how many times was always
under the same conditions? what type load? what voltage? what current? the event reproducible?)
4. Make note the type protection that has tripped accessing the LAST TRIP page there external power supply (Vaux battery)
or pressing Test" self-supply mode.7.
3. The test unit connected the relay through dedicated connector (see par.
1 cce sso rie s
1 SACE PR010/T and fig tio unit
Testing the SACE PR010/T unit allows checking correct operation thresholds and trip times "L", "S", "I", "G", OV, UV, RV, protection
functions. Send/communicate all the information collected, together with the circuit diagram for the circuit-breaker, your nearest ABB Customer Support
service. 13
