Description
58/293 Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • 802-9081.9
10 Technical data
10.1 Complete switchgear
General electrical data
Test voltages for busbar voltage transformers at 50 Hz
The busbar voltage transformers can be tested together with the switchgear at 80% of the
rated short-duration power-frequency voltage.
High-voltage test equipment
The following table shows the power consumption per panel for dimensioning the high-
voltage test equipment. The test voltage is supplied through a feeder panel of NXPLUS C.
Further panels to be tested are switched off during the test.
Rated voltage kV 7.2 12 15 17.5 24
Rated short-duration power-frequency withstand
voltage
- phase-to-phase, phase-to-earth, open contact
gap
kV 20
28
1
1
Higher rated short-duration power-frequency withstand voltage available with:- 42/95 kV for
phase-to-phase, phase-to-earth, open contact gap- 48/110 kV across isolating distance
36 38 50
- across the isolating distance kV 23
32
1
39 45 60
Rated lightning impulse withstand voltage
- phase-to-phase, phase-to-earth, open contact
gap
kV 60
75
1
95 95 125
- across the isolating distance kV 70
85
1
110 110 145
Rated frequency Hz 50/60
Rated short-circuit breaking current kA 31.5 25
Rated short-circuit making current kA 63/80
Rated peak withstand current kA 63/80
Rated short-time withstand current kA max. 31.5 (3 s) max. 25 (3 s)
Rated normal current of busbar, max. A 1250/1600/2000/2500
Rated normal current for incoming and outgoing
feeders
A 630/1000/1250/2000/2500 630/1000/1250/2000
Rated normal current for switch-disconnector panel,
max. (depending on fuse-link)
A 50 ... 250
Rated normal current
- Vacuum contactor panel without fuses A 450
- Vacuum contactor panel with fuses A
450
2
2
Depending on HV HRC fuse-link. Observe the let-through current of the HV HRC fuse.
Ring-main panel A 630
Temperature range
o
C
-5/-25
3
... +55
3
Option
Primary voltage [kV] Standard Rated short-duration power-
frequency withstand voltage
[kV]
80% permissible test
value [kV]
up to 3.6 IEC 10 8.0
up to 7.2 IEC 20 16.0
GB 23 18.4
GOST 32 25.6
up to 12 IEC 28 22.4
GB 42 33.6
GOST 42 33.6
up to 17.5 IEC 38 30.4
up to 24 IEC 50 40.0
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