Eaton Magnefix MD4 - General Technical Data; Electrical Data

Magnefix MD4
991.184 G01 03
15
2.3 General technical data
This section contains general technical data only. For details concerning your own system, please refer to the information pack
supplied with it, which includes this manual.
2.3.1 Electrical data
Rated values:
Voltage
kV
3.6
7.2
12
Impulse withstand voltage
kV
40/46
60/70
75/85
Power frequency withstand voltage
kV
10/12
20/23
28/32
Frequency
Hz
50/60
50/60
50/60
Busbar system
Normal current
A
400
400
400
Short-time withstand current (1s)
kA
14.4
14.4
14.4
Peak withstand current
kA
31
31
31
Single-pole load-break switches
Normal current
A
400
400
400
Breaking current (cos  = 0.7)
A
400
400
400
Short-circuit making current
kA
31
31
31
Short-time withstand current (1s)
kA
14.4
14.4
14.4
Capacitive earth fault current
A
240
240
240
Cable charging current
A
25
25
25
No-load transformer breaking current
kVA
1250
1250
1250
Fuses
Normal current
A
57.7
57.7
57.7
Voltage
kV
10/12
10/12
10/12
Dimensions according to DIN43625
Vacuum circuit-breaker
Type
NVX124A-1204
Normal current
A
400
400
400
Short-time withstand current (1s)
kA
14.4
14.4
14.4
Short-circuit breaking current
kA
14.4
14.4
14.4
Direct current component
%
20
20
20
Making current
1)
A
*
*
*
1)
There is no making current when switching on. The vacuum circuit-breaker can only be switched on
when the circuit is dead.