
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.
Содержание UniGear ZS1
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