HD4/R MV SF6 circuit-breakers for secondary distribution PPMV – Product Management.
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Transcript of HD4/R MV SF6 circuit-breakers for secondary distribution PPMV – Product Management.
![Page 1: HD4/R MV SF6 circuit-breakers for secondary distribution PPMV – Product Management.](https://reader033.fdocuments.in/reader033/viewer/2022061408/56649d885503460f94a6d090/html5/thumbnails/1.jpg)
HD4/RMV SF6 circuit-breakersfor secondary distribution
PPMV – Product Management
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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
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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)
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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
Month DD, Year | Slide 4© ABB Group
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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
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HD4/RWide range of accessories
Month DD, Year | Slide 6© ABB Group
- 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
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HD4/RReliability and flexibility
Month DD, Year | Slide 7© ABB Group
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
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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
Month DD, Year | Slide 8© ABB Group
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
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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
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