9
Thermal Overload Protection (49-1, 49-2)
7UT51 v3
112 PRIM-2330C
Table 9.1
Events Related to Thermal Overload Protection (49-1 and 49-2)
Trip
The thermal overload protection will trip if and when ALL the
following statements are true:
• the corresponding 49 element has picked
-
up and it has not yet
dropped out or already caused a trip,
• the corresponding 49 time delay has expired,
With the default marshalling, the occurrence of logical event 1571
or 1621 will light and latch LED 9 (49
-
1) or LED 10 (49
-
2), and
(as for any trip event) LED 1.
>49 O/L1 TRIP
>49 O/L2 TRIP
1571
1621
C
C
G
G
S
S
T
T
Configuration Error
Configuration Error: One of the 49 functions has been assigned to
winding 3 (Address 7824 or 7825), but the protected device
(Address 7801) does not have a third winding (7UT513 only)
>49 O/L1 ErrS3
>49 O/L2 ErrS3
1576
1626
C
C
S
S
Thermal Overload Protection (49
-
1 and 49
-
2) Occurrence LCD Abbreviation Event Oper Fault In/Out
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