ABB VD4 - Page 12

VD4/R - VD4/L - VD4/R-SEC - VD4/L-SEC - INSTALLATION AND OPERATING INSTRUCTIONS 12
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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    
   
Rated voltage Ur [kV]   
Rated insulation voltage Us [kV]   
  

) 

) 
Impulse withstand voltage Up [kV]   
Rated frequency fr [Hz]   
 Ir [A]         
Rated duty breaking capacity
(symmetrical rated short-circuit current)
Isc [kA]        – 
       – 
   

) 

)   – 
    – –  – 
 Ik [kA]        – 
       – 
   

) 

)   – 


) 

)  

) – – 

) – 

)
Making capacity Ip [kA]        – 
       – 
       – 
    – –  – –
Sequence of operations    
Opening time [ms]   
Arcing time [ms]   
Total break-time [ms]   
Closing time [ms]   
Overall dimensions
(maximum)
H [mm]   
W [mm]   
D [mm]   
Pole center-distance P [mm]   
Weight (

) [kg]   


) 

) 

) 

)
Standardized dimensions table   
Wiring diagram    
Operating temperature [°C] 

) 

) 

)
Tropicalization    
Electromagnetic compatibility    
(
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