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The PR122/DC unit saves all the information relating the type protection tripped, the opening data, the date and time.
Information remains available for hours with the relay de-energized.6 efinition 122/D unit
12..
45/108
.
-Indication for protection tripped.9x^< 1.
12.7. With auxiliary
power supply, the information shown immediately the display without the need press the Test" key and remains displayed indefinitely
until you press the key.02
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June 12, 2007 8:52:11:733
I1' 625A -,
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Number openings due the protections.
* The IEC 60947-2 Standard defines the timing threshold for current: 1.5.6.6.
Alarm Led (red)
• Presence current values >1. Using the Test" key
makes the release show all these data directly the display.
12. There need for auxiliary power supply for this function. The following example the information provided:
12.3 I1.
Pressing the Test" key enables resetting the activated contacts.05xI1;
•Contact wear greater than 80% (and less than 100%);
•WARNING Threshold exceeded;
•Circuit-breaker state error;
•Configuration error;
•Settings inconsistency.
Warning Led (yellow 2Hz) •Relay's internal temperature exceeding ALARM threshold..1 Optical signals
Signaling Description
Warning Led (fixed yellow
light)
•The prealarm threshold has been exceeded; current values the range 0.3 (timing protection “L”)*;
• Timing progress for protection function S;
• Contact wear 100%;
• Rating Plug disconnected;
• Trip Coil (TC) disconnected;
• Key plug error;
• CB/release inconsistency
• Installation error. The data relating the last trips are stored the unit's memory.2 Electrical signals
K51/p1.
Warning Led (yellow 0..
Value the current
Again the Measurements menu, you can view the percentage contact wear, which indication the electrical life the electrical contacts
in the circuit-breaker.
Model 3447
Apparatus Emax DC
Scale
D oc-N 1SDH000635R0002
Page No.p8 Programmable electric signals the PR021/K unit installed and there auxiliary power supply.p4 Programmable electrical signals the PR120/K module installed and there auxiliary power supply.05 1.
Access view the opening data via the Historicals submenu the Measurements menu.5Hz) •Relay's internal temperature exceeding WARNING threshold.
The prealarm message (wear 80%, "warning" LED lighting up) indicates that the wear has reached high value.1 Information the trip and opening data
Last Trip N.Thealarm message (100%
wear, "alarm" LED lighting up) indicates that necessary check the state contact wear.
K51/p1..
In any case, functionality the relay way modified the presence the wear messages. By
connecting PR030/B and PR010/T battery unit BT030 wireless communication unit, you can retrieve the information relating the last 20
trips recorded.
The percentage wear depends the number openings carried out the circuit-breaker and theabsolute current interrupted during
each them
