14
5.4.4. General characteristics of withdrawable circuit-breakers for UniSafe switchgear
(1) Rated uninterrupted currents guaranteed with withdrawable circuit-breakers installed
in UniSafe switchgear with air temperature of 40 °C.
Circuit-breaker
Standards
Rated voltage
Rated insulation voltage
Withstand voltage at 50 Hz
Impulse withstand voltage
Rated frequency
Rated normal current
(40 °C)
Rated breaking capacity
(rated symmetrical
short-circuit current)
Rated short-time
withstand current (3 s)
Making capacity
Operation sequence
Opening time
Arcing time
Total breaking time
Closing time
Maximum overall dimensions
Pole centre distance
Standardised table of dimensions
Operating temperature
Tropicalisation
Electromagnetic compatibility
IEC 62271-100
CEI 17-1 (File 1375)
Ur [kV]
Us [kV]
Ud (1 min) [kV]
Up [kV]
fr [Hz]
(1) Ir [A]
Isc [kA]
Ik [kA]
Ip [kA]
[O-0,3s-CO-3min-CO]
[ms]
[ms]
[ms]
[ms]
H [mm]
W [mm]
D
[mm]
I [mm]
[°C]
IEC: 60068-2-30
721-2-1
IEC: 60694, 61000-6-2
61000-6-4
VD4/P 12
12
12
28
75
50-60
630
1250
630
1250
1600
2000
2500
16
16
16
16
–
–
–
20
20
20
20
20
20
20
25
25
25
25
25
25
25
31.5
31.5
31.5
31.5
31.5
31.5
31.5
16
16
16
16
–
–
–
20
20
20
20
20
20
20
25
25
25
25
25
25
25
31.5
31.5
31.5
31.5
31.5
31.5
31.5
40
40
40
40
–
–
–
50
50
50
50
50
50
50
63
63
63
63
63
63
63
80
80
80
80
80
80
80
40 ... 60
10 ... 15
50 ... 75
60 ... 80
632
632
632
632
690
690
690
503
503
503
503
653
653
853
664
664
664
664
642
642
642
150
150
210
210
210
210
275
TN7412 TN7412 TN7420 TN7420 TN7415 TN7415 TN7417
– 5 ... + 40
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