VD4/R - VD4/L - VD4/R-SEC - VD4/L-SEC
- INSTALLATION AND OPERATING INSTRUCTIONS
12
—
5. Product description
5.3.3 General specifications of fixed circuit breakers with rh lateral operating mechanisms for ABB UniSec witchgear (12-17.5-24 kV)
Circuit breaker
VD4/R-SEC 12
VD4/R-SEC 17
VD4/R-SEC 24
Standards
IEC 62271-100
•
•
•
CEI EN 62271-100
•
•
•
Rated voltage
Ur [kV]
12
17.5
24
Rated insulation voltage
Us [kV]
12
17.5
24
Withstand voltage at 50 Hz
Ud (1 min) [kV]
28 (
1
)
38 (
1
)
50
Impulse withstand voltage
Up [kV]
75
95
125
Rated frequency
fr [Hz]
50-60
50-60
50-60
Rated thermal current (40 °C)
Ir [A]
630
800
1250
630
800
1250
630
800
1250
Rated duty breaking capacity
(symmetrical rated short-circuit current)
Isc [kA]
12.5
12.5
12.5
12.5
12.5
12.5
12.5
–
12.5
16
16
16
16
16
16
16
–
16
20
20
20
20 (
2
)
20 (
2
)
20
20
–
20
25
25
25
25
–
–
25
–
25
Short-time withstand current (3 s)
Ik [kA]
12.5
12.5
12.5
12.5
12.5
12.5
12.5
–
12.5
16
16
16
16
16
16
16
–
16
20
20
20
20 (
2
)
20 (
2
)
20
20
–
20
25 (
3
)
25 (
3
)
25
25 (
3
)
–
–
25 (
3
)
–
25 (
3
)
Making capacity
Ip [kA]
31.5
31.5
31.5
31.5
31.5
31.5
31.5
–
31.5
40
40
40
40
40
40
40
–
40
50
50
50
50
50
50
50
–
50
63
63
63
63
–
–
63
–
–
Sequence of operations
[ O - 0.3s - CO - 15s - CO ]
•
•
•
Opening time
[ms]
40…60
40…60
40…60
Arcing time
[ms]
10...15
10...15
10...15
Total break-time
[ms]
50… 75
50… 75
50… 75
Closing time
[ms]
30…60
30…60
30…60
Overall dimensions
(maximum)
H [mm]
740
740
740
W [mm]
315
315
315
D [mm]
1005
1005
1005
Pole center-distance P [mm]
230
230
230
Weight (
3
)
[kg]
65
65
65
Application of REF 601 protection device (
5
)
• (
6
)
• (
6
)
• (
6
)
Standardized dimensions table
1VCD000131
1VCD000131
1VCD000131
Wiring diagram
without / with REF 601
1VCD400118
1VCD400118
1VCD400118
Operating temperature
[°C]
-5 ... +40 (
7
)
-5 ... +40 (
7
)
-5 ... +40 (
7
)
Tropicalization
IEC: 60068-2-30, 60721-2-1
•
•
•
Electromagnetic compatibility
IEC 62271-1
•
•
•
(
1
) for 12.08.20 and 17.08.20, versions with withstand voltage up to 42 kV are available
(
2
) rated duty breaking capacity 21 kA at 17.5 kV. Rated short-time withstand current 21 kA x 3 s
(
3
) rated short-time withstand current 25 kA x 2 s
(
4
) increase the indicated weight by 20 kg for circuit breakers with REF 601 devices and 3 current sensors
(
5
) “IEC” or “CEI 0-16” version. If the “CEI 0-16” is required, the circuit breaker is always supplied with 3 phase current sensors (Rogowsky coils) installed on the actual circuit breaker and with a
loose toroidal TA. In the “CEI 0-16” version, the REF 601 device opens the circuit breaker by means of the undervoltage release -MU
(
6
) the rated current of the REF 601 device must be set in the relay in accordance with the circuit breaker’s rated current
(
7
) for 12.08.20 and 17.08.20, 24.12.20, 17.12.25 and 24.12.25, versions with operating temperature up to -25 °C and storage temperature up to -40 °C are available
H
W
D
