ABB VD4 Installation And Service Instructions Manual page 24

General characteristics of withdrawable circuit-breakers for UniGear ZS1 switchgear (24 kV)
Circuit-breaker
Standards
VDE 0671; CEI 17-1 (File 1375)
Rated voltage
Rated insulation voltage
Withstand voltage at 50 Hz
Impulse withstand voltage
Rated frequency
1
Rated normal current (40 °C) ( )
Rated breaking capacity
(rated short-circuit breaking
current symmetrical)
Rated short-time
withstand current (3s)
Making capacity
Operation sequence [ O - 0.3 s - CO - 15 s - CO ]
Opening time
Arcing time
Total breaking time
Closing time
Maximum
P P
Overall
H
Dimensions
D
W
Weight
Standardised table of dimensions
Operating temperature
Tropicalization IEC: 60068-2-30, 60721-2-1
Electromagnetic compatibility
(1) Rated current guaranteed with circuit-breaker installed in UniGear ZS1 switchgear and with 40 °C ambient temperature.
(2) 2300 A rated current guaranteed with natural ventilation; 2500 A rated current guaranteed with forced ventilation.
22
VD4/P 24
IEC 62271-100
Ur [kV] 24
Us [kV] 24
Ud (1 min) [kV] 50
Up [kV] 125
fr [Hz] 50-60
Ir [A] 630
Isc [kA] 16
20
25
Ik [kA] 16
20
25
Ip [kA] 40
50
63
[ms] 33 ... 60
[ms] 10 ... 15
[ms] 43 ... 75
[ms] 60 ... 80
H [mm] 794
W [mm] 653
D [mm] 802
Pole distance P [mm] 210
[kg] 140
TN 7413
[°C] - 5 ... + 40
IEC: 60694
630 1250 1250
16 16 16
20 20 20
25 25 25
16 16 16
20 20 20
25 25 25
40 40 40
50 50 50
63 63 63
794 794 794
853 653 853
802 802 802
275 210 275
148 140 148
7414 7413 7414
1600 2000 2500
16 16 16
20 20 20
25 25 25
16 16 16
20 20 20
25 25 25
40 40 40
50 50 50
63 63 63
838 838 838
853 853 853
790 790 790
275 275 275
228 228 228
7418 7418 7418
(2)