ABB Power Distribution 7
2 Technical data
2.1 Electrical data
Rated voltage kV 12 17.5
Max. operating voltage kV 12 13.8
Rated power frequency withstand voltage kV 28 38
Rated lightning impulse withstand voltage kV 75 95
Isolation VDE/IEC List 2 VDE/IEC List 2
Rated frequency Hz 50/60 50/60
Rated current of the busbars ... 4000 ... 4000
Rated current of the tee-offs:
• Circuit-breaker A ... 4000 ... 4000
• Switch-disconnector A ... 1250 ... 1250
Rated impulse current of
the main conductor kA ... 125 ... 100
Rated short-circuit breaking current
of the circuit-breaker kA ... 50 ... 40
Rated short-time current
2)
3s kA ... 50 ... 40
Auxiliary voltage V DC
1)
60, 110, 120; AC 110, 220
1)
Special DC voltage on request.
2)
Take the short-circuit withstand capability of the instrument transformers into account separately.
For data on the individual switching devices, see ABB switchgear handbook or the instruction manual for the
switching device concerned, as listed under 7.1.
2.2 Resistance to internal arc faults
The resistance to internal arcing faults is 50 kA 1s.
Criteria 1 to 6 of PEHLA Directive No. 4 (in con-
junction with VDE 0670 part 6 and IEC 60298) are
fulfilled. Depending on the configuration of the
panels and/or the switchroom conditions (e.g. low
ceiling height), additional measures may be
necessary to ensure compliance with criterion 5.
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