Description
72/293 Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • 802-9081.9
10.7 Rating plates
IAC classification The data ④ describes the internal arc classification of the panel according to IEC 62271-200.
The data describes the areas classified for the corresponding panel (see page 59,
"Classification of NXPLUS C according to IEC 62271-200").
10.8 Vacuum circuit-breaker
Operating cycles 3AH55
Fig. 38: Permissible number of operating cycles n as a function of the breaking current I
a
(r.m.s. value) in kA
Fig. 36: Rating plate on the inside of the low-
voltage compartment
Fig. 37: Rating plate at the switchgear
vessel
①
Switchgear type
⑤
Number of operating cycles
②
Serial number
⑥
Year of manufacture
③
Panel number
⑦
Technical data
④
Internal arc classification
Rated voltage kV 7.2 12 15 17.5 24
Rated current A ≥ 1000/1250/2000/2500 ≥ 1000/1250/2000
Rated short-time withstand
current
kA 31.5 25
Rated normal current Operating
cycles
10000
Short-circuit breaking current Operating
cycles
50
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