26
26
5.4. Fixed circuit-breakers
The fixed circuit-breaker (fig. 4/a paragraph 5.3.1) is the basic version complete with structure and front protection screen.
The fixing holes are made in the lower part of the structure.
The cord with the connector (18) (plug) for connecting the electrical accessories of the operating mechanism comes out of
connector (9). The earthing screw is placed in the rear part of the circuit-breaker. For further details, see the caption to figure
4/a in paragraph 5.3.1.
5.4.1. General characteristics of fixed circuit-breakers
General characteristics of fixed circuit-breakers (12 kV)
D
H
W
P P
Circuit-breaker
eVD4 12
eVD4 12
Standards
IEC 62271-100 •
•
VDE 0671; CEI EN 62271-100 file 7642 •
•
Rated voltage
Ur [kV] 12
12
Rated insulation voltage
Us [kV] 12
12
Withstand voltage at 50 Hz
Ud (1 min) [kV] 42
42
Impulse withstand voltage
Up [kV] 75
75
Rated frequency
fr [Hz] 50-60
50-60
Rated thermal current (40°C)
Ir [A] 630
630
630
1250
1250
1250
1250
1250
1600
1600
1600
1600
2000
2000
2500
Rated breaking capacity
(symmetrical rated short-
circuit current)
Isc [kA]
16
16
16
16
16
16
—
—
—
—
—
—
—
—
—
20
20
20
20
20
20
—
—
20
20
—
—
20
20
20
25
25
25
25
25
25
—
—
25
25
—
—
25
25
25
31.5
31.5
31.5
31.5
31.5
31.5
—
—
31.5
31.5
—
—
31.5
31.5
31.5
—
—
—
—
—
—
40
40
—
—
40
40
40
—
40
Short-time withstand
current (3s)
Ik [kA]
16
16
16
16
16
16
—
—
—
—
—
—
—
—
—
20
20
20
20
20
20
—
—
20
20
—
—
20
20
20
25
25
25
25
25
25
—
—
25
25
—
—
25
25
25
31.5
31.5
31.5
31.5
31.5
31.5
—
—
31.5
31.5
—
—
31.5
31.5
31.5
—
—
—
—
—
—
40
40
—
—
40
40
40
—
40
Making capacity
Ip [kA]
40
40
40
40
40
40
—
—
—
—
—
—
—
—
—
50
50
50
50
50
50
—
—
50
50
—
—
50
50
50
63
63
63
63
63
63
—
—
63
63
—
—
63
63
63
80
80
80
80
80
80
—
—
80
80
—
—
80
80
80
—
—
—
—
—
—
100
100
—
—
100
100
100
—
100
Sequence of operations
[O - 0.3 s - CO - 15 s - CO] •
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Opening time
[ms] 33 ... 60
33 ... 60
Arcing time
[ms] 10 ... 15
10 ... 15
Total breaking time
[ms] 43 ... 75
43 ... 75
Closing time
[ms] 60 ... 80
60 ... 80
Maximum
overall
dimensions
H [mm] 461
461
461
461
461
461
589
589
599
599
589
589
599
599
599
W [mm] 450
570
700
450
570
700
570
700
570
700
570
700
570
700
700
D [mm] 464
483
483
464
483
483
483
483
483
483
483
483
483
483
483
Pole centre-distance P [mm] 150
210
275
150
210
275
210
275
210
275
210
275
210
275
275
Weight
[kg] 73
75
79
73
75
79
84
84
98
105
84
84
98
105
160
Standardized dimensions table
1VCD 000156
000157
000158
000156
000157
000158
000161
000162
000159
000160
000161
000162
000159
000160
000176
Operating temperature
[°C] - 5 ... + 40 (
1
)
- 5 ... + 40 (
1
)
Tropicalization
IEC: 60068-2-30, 60721-2-1 •
•
Electromagnetic compatibility
IEC: 62271-1 •
•
(1) For lower temperature please ask ABB.
Содержание eVD4
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