hd4/r mv sf6 circuit-breakers for secondary distribution ppmv – product management
TRANSCRIPT
HD4/RMV SF6 circuit-breakersfor secondary distribution
PPMV – Product Management
HD4/RCore technology
Month DD, Year | Slide 2© ABB Group
Upper terminal
Lower terminal
Epoxy resin cylinder
Moving arcing contact
Blasting nozzlesFixed contact
Moving contact
Insulating tie-rod
Anti-explosion valve
Fixed arcing contact
HD4/RQuenching technique – SF6 Autopuffer
Month DD, Year | Slide 3© ABB Group
Circuit breaker closed
Circuit breaker open
Moving contactseparation
Arcing contactseparation
(1) (2) (3) (4)
1. Protection relay (accessory)
2. Shaft seat for charging the closing springs
3. Closing pushbutton
4. Opening pushbutton
5. Charged/discharged closing spring indicator (accessory)
6. CB contacts status (open/closed)
7. SF6 pressure status locking and signalling device (accessory)
8. MV terminals
9. Current transformers/sensors (accessory)
10. Epoxy resing poles with assembled SF6 auto-puffer
11. Key lock in open position
HD4/RMain components
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Self-supplied relay Not self-supplied relay
Apparatus
Relay
PR 521 REF 601 IECREF 601 CEI 0-16
Current sensors
Current transformer- 40/1A- 80/1A- 250/1A- 1250/1A
Current sensors
HD4/R with shunt opening release
HD4/RIntegrated solution
Month DD, Year | Slide 5© ABB Group
HD4/RWide range of accessories
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- Shunt opening release - Auxiliary contacts (5 to 12)- Key lock in open position- Additional shunt opening release- Opening solenoid (PR521)- Shunt closing release- Motor charger of closing spring- Thermal relay for protecting motor charger- Undervoltage shunt opening release- Charged/discharged spring signalling contact- Pushbutton protection- Padlock- Wheels- Two-level pressure switch- Three-level pressure lamps- Locking device for insufficient SF6 pressure
HD4/RReliability and flexibility
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Reliability
- 10.000 Close-open operations
- Maintenance-free
- SF6 auto-puffer technology ideal for critical loads• No current chopping• No restrike• Reduced overvoltage
Flexibility
- Wide range of accessories
- Possibility to have relays and CTs on board
- Interchangeable with VD4/R
SF6 circuit breaker for secondary distribution AIS
On board relay and CTs/sensors
Interchangeable with VD4/R
Command able to do fast operation cycle:O-0.3s-CO-15s-CO
HD4/RSF6 circuit breaker
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Rated Voltage [kV] 12 17.5 24 36
Rated Current [A] 1250
Short time current [kA] 25 (3s) 20 (3s) 16 (3s)
Mechanical class M2
Electrical class E2, C2
SF6 circuit breaker for secondary distribution AIS
On board relay and CTs/sensors
Interchangeable with VD4/R and HD4/R
optimized and compact
HD4/RESF6 circuit breaker optimized
Month DD, Year | Slide 9© ABB Group
Rated Voltage [kV] 12 17.5 24
Rated Current [A] 630
Short time current [kA] 16 (1s)
Mechanical class M1
Electrical class E1