6
5.3.2. General characteristics of fixed circuit-breakers with left lateral operating mechanism (12 – 17.5 – 24 kV)
(1) Pole centre distance: 230 mm
(2) Pole centre distance: 300 mm
(3) For circuit-breakers with PR 521 device and 3 current sensors, increase the weight indicated by 20 kg
(4) Rated current of the current sensors (the PR521 device and the current sensors are optional)
(5) 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)
VD4/L 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
785
317
1029
(1)
/ 1170
(2)
230 / 300
65
(1)
- 67
(2)
40 - 80 - 250 - 1250
(4)
(5)
1VCD003453
(1)
1VCD003454
(2)
1VCD400097
- 5 ... + 40
VD4/L 17
17.5
17.5
38
95
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
785
317
1029
(1)
/ 1170
(2)
230 / 300
65
(1)
- 67
(2)
40 - 80 - 250 - 1250
(4)
(5)
1VCD003453
(1)
1VCD003454
(2)
1VCD400097
- 5 ... + 40
VD4/L 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
785
317
1029
(1)
/ 1170
(2)
230 / 300
65
(1)
- 67
(2)
40 - 80 - 250 - 1250
(4)
(5)
1VCD003453
(1)
1VCD003454
(2)
1VCD400097
- 5 ... + 40
W
H
D
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
