1. MV vacuum circuit-breakers for secondary distribution
PPMV – Product Management
VD4/R
MV vacuum circuit-breakers
for secondary distribution

2. VD4/R Core technology Upper terminal Vacuum interrupter (VI)
Epoxy resin cylinder
Stem
Lower terminal
Flexible connection
Contact force spring
Push rod
Fixing point
Operating mechanism connection

3. Vacuum Interrupter (VI)
VD4/R
Vacuum Interrupter (VI)
Stem/terminal
Twist protection
Bellow
Interrupter lid
Shield
Contacts
Stem/Terminal
Ceramic insulator

4. VD4/R
Quenching technique
© ABB Group
September 19, 2018 | Slide 4

5. VD4/R Main components Protection relay (accessory) Closing pushbutton
Opening pushbutton
CB contacts status (open/closed)
Integrated closing spring charging lever
Charged/discharged closing spring indicator (accessory)
MV terminals
Epoxy resin poles with embedded Vacuum Interrupters (VI)
Current transformers/sensors (accessory)
Operation counter
Keylock in open position
Mechanical override of undervoltage shunt opening release (accessory)
© ABB Group
Month DD, Year

6. VD4/R
Integrated solution
© ABB Group
Month DD, Year

7. Wide range of accessories
VD4/R
Wide range of accessories
Shunt opening release
Auxiliary contacts (5 to 15)
Key lock in open position
Additional shunt opening release
Opening solenoid (PR521)
Shunt closing release
Motor charger for closing spring
Thermal relay for protecting motor charger
Undervoltage shunt opening release
Charged/discharged spring signalling contact
Pushbutton protection
Padlock
Wheels
Audioscript: HySec has the possibility to be equipped with a wide range of accessories, both for the circuit breaker part and the disconnector and earthing switch part.
© ABB Group
Month DD, Year

8. Reliability and flexibility
VD4/R
Reliability and flexibility
Reliability
Close-open operations
- Maintenance-free
- Embedded VI protected from external environment
Flexibility
- Wide range of accessories
- Possibility to have relays and CTs on board
- Interchangealbe with HD4/R
© ABB Group
Month DD, Year

9. Vacuum circuit breaker
VD4/R
Vacuum circuit breaker
Vacuum circuit breaker for secondary distribution AIS
On board relay and CTs/sensors
Interchangeable with HD4/R
Command able to do fast operation cycle: O-0.3s-CO-15s-CO
Rated Voltage [kV] 12
17.5 24
Rated Current [A]
1250
Short time current [kA]
25 (3s)
20 (3s)
Mechanical class M2
Electrical class E2
Audioscript: HySec is the first ABB multifunction apparatus integrating the functions of vacuum circuit breaker, SF6 line disconnector and SF6 earthing switch.
Audioscript_1: Its rated voltage is up to 24 kV, while its rated current is up to 600 A. Its breaking capacity is up to 16 kA, which is also its short time current withstand capability for 1 second.
Audioscript_2: HySec is able to perform mechanical close-open operations. Its electrical life is classified as E2 and, up to 400 A, C2 for back to back capacitor switching.
Audioscript_3: HySec is also able to perform the fast operation cycle.
© ABB Group
Month DD, Year