Rating Plug - Siemens UL 489 Operating Instructions Manual
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Also See for UL 489:
- Quick start manual (12 pages) ,
- Instruction sheet (12 pages) ,
- Application manual (96 pages)
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9.1.7
Rating Plug
The Rating Plug defines the rated current I
If a rating plug with a higher current than the maximum permissible circuit breaker rated continuous current is plugged in, the electronic
system of the trip unit recognizes this error and signals it with a flashing T.U. ERROR indicator.
The trip unit ignores the rated current value specified by the incorrect Rating Plug and sets it to the value of the smallest Rating Plug for the
frame size of the relevant circuit breaker.
The same happens if a circuit breaker with frame size III is equipped with a Rating Plug smaller than 800 A.
All set protection parameters are adjusted accordingly.
It is not permitted to operate the trip unit without a Rating Plug. If a circuit breaker is nevertheless started up without a Rating Plug,
the T.U. ERROR indicator will light up and the trip unit settings will default to the lowest possible settings for that frame rating.
within a certain range for a given circuit breaker frame size.
n
Frame size
Rating Plug
I
II
III
q
q
200 A
q
q
225 A
q
q
250 A
q
q
300 A
q
q
315 A
q
q
350 A
q
q
400 A
q
q
450 A
q
q
500 A
q
q
600 A
q
q
630 A
q
q
700 A
q
q
q
800 A
q
q
q
1000 A
q
q
q
1200 A
q
q
q
1250 A
q
q
q
1600 A
q
q
q
2000 A
q
q
2500 A
q
q
3000 A
q
3200 A
q
4000 A
q
5000 A
Catalog No.
WLRP200
WLRP225
WLRP250
WLRP300
WLRP315
WLRP350
WLRP400
WLRP450
WLRP500
WLRP600
WLRP630
WLRP700
WLRP800
WLRP1000
WLRP1200
WLRP1250
WLRP1600
WLRP2000
WLRP2500
WLRP3000
WLRP3200
WLRP4000
WLRP5000
9 – 43
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