12
General characteristics of circuit-breakers with right lateral operating mechanism for
IP30 UniAir type switchgear (12 – 17.5 – 24 kV)
VD4/UniAir 12
12
12
28
75
50-60
630 800 1250
12.5 — —
16 16 16
20 20 20
25 25 25
12.5 — —
16 16 16
20 20 20
25 25 25
31.5 — —
40 40 40
50 50 50
63 63 63
40…60
10...15
50…75
50...70
734.5
(4) (5) (6)
- 725
(7)
374
(4) (5) (6)
- 282
(7)
1170
(4) (5) (6) (7)
300
70
(4) (5) (6)
- 67
(7)
40 - 80 - 250 - 1250
(2)
(3)
1VCD000102
(4)
1VCD000103
(5)
1VCD000104
(6)
1VCD000105
(7)
1VCD400098
(4) (5) (6)
1VCD400097
(7)
- 5 ... + 40
VD4/UniAir 17
17.5
17.5
38
95
50-60
630 800 1250
12.5 — —
16 16 16
20 20 20
25 — —
12.5 — —
16 16 16
20 20 20
25 — —
31.5 — —
40 40 40
50 50 50
63 — —
40…60
10...15
50…75
50...70
734.5
(4) (5) (6)
- 725
(7)
374
(4) (5) (6)
- 282
(7)
1170
(4) (5) (6) (7)
300
70
(4) (5) (6)
- 67
(7)
40 - 80 - 250 - 1250
(2)
(3)
1VCD000102
(4)
1VCD000103
(5)
1VCD000104
(6)
1VCD000105
(7)
1VCD400098
(4) (5) (6)
1VCD400097
(7)
- 5 ... + 40
VD4/UniAir 24
24
24
50
125
50-60
630 800 1250
12.5 —- —-
16 16 16
20 20 20
——- —-
12.5 —- —-
16 16 16
20 20 20
——- —-
31.5 —- —-
40 40 40
50 50 50
——- —-
40…60
10...15
50…75
50...70
734.5
(4) (5) (6)
- 725
(7)
374
(4) (5) (6)
- 282
(7)
1170
(4) (5) (6) (7)
300
70
(4) (5) (6)
- 67
(7)
40 - 80 - 250 - 1250
(2)
(3)
1VCD000102
(4)
1VCD000103
(5)
1VCD000104
(6)
1VCD000105
(7)
1VCD400098
(4) (5) (6)
1VCD400097
(7)
- 5 ... + 40
W
H
D
(1) For circuit-breakers with PR 521 device and 3 current sensors, increase the weight indicated by 20 kg
(2) Rated current of the current sensors (the PR521 device and the current sensors are optional)
(3) DK type phase current sensors on board the circuit-breaker and toroidal CT for DK type homopolar protection not on board (the PR521/DK device and the DK sensors are
optional)
(4) VD4/UniAir for P1/E Unit IP30 version (unit with plug-in circuit-breaker); the circuit-breaker for the same Arc Proof version unit is not available
(5) VD4/UniAir-2R for P1E/2R Unit IP30 version (unit with withdrawable circuit-breaker on supply and load side); the circuit-breaker for the same Arc Proof version unit is not
available
(6) VD4/UniAir-A for P1/A Unit IP30 version (unit with fixed “upside-down” circuit-breaker); the circuit-breaker for the same Arc Proof version unit is not available
(7) VD4/UniAir-F for P1/F Unit IP30 version (unit with fixed circuit-breaker without wheels and cabled to terminal box); the circuit-breaker for the same Arc Proof version unit
is not available
Circuit-breaker
Standards IEC 62271-100
CEI 17-1 (file 1375)
Rated voltage Ur [kV]
Rated insulation voltage Us [kV]
Withstand voltage at 50 Hz Ud (1 min) [kV]
Impulse withstand voltage Up [kV]
Rated frequency fr [Hz]
Rated normal current (40°C) Ir [A]
Rated breaking capacity Isc [kA]
(rated symmetrical short-circuit current)
Rated short-time withstand Ik [kA]
current (3s)
Making capacity Ip [kA]
Operation sequence [ O - 0.3s - CO - 15s - CO ]
Opening time [ms]
Arcing time [ms]
Total breaking time [ms]
Closing time [ms]
Overall H [mm]
dimensions
W [mm]
(maximum)
D [mm]
Pole centre distance I [mm]
Weight
(3)
[kg]
Application of PR521 protection device In [A]
Application of PR521/DK protection device
Table of standardised dimensions
Electric circuit diagram
Operating temperature [°C]
Tropicalization IEC: 60068-2-30, 60721-2-1
Electromagnetic compatibility IEC 60694
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