861-9601.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • Revision 11
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Description
17
Technical data
17.1
Electrical data
Complete switchgear
Electrical data, filling pressure, temperature for single-busbar switchgear
Rated insulation level
Rated voltage U
r
kV
12
24
36
40.5
Rated short-duration power-frequency withstand voltage U
d
- phase-to-earth, open contact gap
kV
28
50
70
85
- across the isolating distance
kV
32
60
80
90
Rated lightning impulse withstand voltage U
p
- phase-to-earth, open contact gap
kV
75
125
170
185
- across the isolating distance
kV
85
145
195
220
Rated frequency f
r
Hz
50/60
50/60
50/60
50/60
Rated normal current
1
I
r
for the busbar
A
1250
1250
1250
1250
A
2000
2000
2000
2000
A
2500
2500
2500
2500
A
3150
3150
3150
3150
A
4000
4000
4000
4000
A
5000
5000
5000
5000
Filling pressure (pressure values
at 20 °C)
Rated filling level
pre
(absolute) for
busbar
kPa
70/120
Minimum functional level p
me
(absolute)
kPa
50/100
Ambient air temperature T
Operation without secondary
equipment
°C
-25 to +55
Operation with secondary equipment
2
°C
-5/-25 to +55
for storage/transport, also with
secondary systems
3
°C
-25 to +55
°C
-40 to +70 (option)
Degree of protection
for parts of the primary circuit under high
voltage
IP 65
Switchgear enclosure
IP 3XD/IP 31D
3
Low-voltage compartment
IP 31D/IP 41
1
The rated normal currents apply to ambient air temperatures of max. +40 °C.
The 24-hour mean value is max. +35 °C (according to IEC 62271-1 and IEC 62271-200).
2
Depending on the secondary equipment used
3
Depending on the design option