Fusesaver

Fusesaver™

The world's fastest vacuum circuit-breaker. Watch how quick and easy it can be installed.
Introduction

Higher availability for your distribution network

By virtually eliminating the impacts of faults on lateral lines, Fusesaver™ helps utilities to increase network reliability while minimising operating costs of overhead MV networks. The exceptional small footprint and light weight of the device enables a quick and easy installation and fast commissioning. Self-powered from line current, the circuit breaker has the capability for multi-phase fault clearance for both transient and permanent faults. The smart system provides wireless connectivity for remote access and can be easily integrated into utilities SCADA network via a Remote Control Unit (RCU).

           

                    

Versatility to optimise the performance of overhead medium voltage distribution network

Benefits

Advanced protection for overhead distribution networks

Minimising the risk of bushfires with Fusesaver™

On extreme risk bushfire days, it is critical to eliminate any probability of faults on the electrical network igniting a fire. Find out how Fusesaver™ can support you minimising the risk of bushfires.

Unrivalled technology for advanced protection

- Half-cycle switching (10 ms)

- Smart grid-ready with communications module

- Self-powered from low line current (as little as 0.15 A)

- Wireless connectivity

- Multi-phase protection operation via peer-to-peer communication

- Multi-phase synchronous manual operation via peer-to-peer communication

- Battery backup auxiliary operation

- Rated for load break and fault make for manual switching

- Fully independent FAST time-current curve configuration

- Delayed operation for manual open/close for load break and load pick-up

- Ability to apply a hot line tag function via SCADA

- Unique compact design and lightweight (5.5 kg)

- Different mounting options (line clamping, cross-arm, pole mounting)

- Optional SCADA connection via Remote Control Unit (RCU)

Fusesaver™ Ratings

Conform with the relevant sections of IEC 62271-100 

Model type
Unit
Low range
Standard range
High range
Minimum line current for operation and battery charging
A
0.15
0.5
1.0
Rated current Ir
A
40
100
200
Rated short-circuit breaking current  Isc
kA
1.5
4
6.3
Rated short-circuit making current Ipeak
kA
3.75
10.4
16.4
Rated short-time current Ik
kA
1.5
4
6.3
Rated short-time current duration tk
s
0.2
0.2
0.5
Fault-break operations at 100%
No.
300
70
30
Rated operating sequence
                                                                                                               O-1s-C/O-2s-CO
Rated clearing time (1st O/2nd O in sequence)
                                                                                                                <20ms/<60ms
Rated line-charging current
A
20
20
20
Mechanical operations
No.
2,000
2,000
2,000
Rated voltage
kV
15.5
27
Rated lightning-impulse withstand voltage Up
kV
110
125
Rated power-frequency withstand voltage Ud (60 s)
kV
50
60
Service Environment
Rating
Operating temperature range
-40(b) to +50°C
Humidity
0 to 100%
Maximum altitude
4,000m(c)
Pollution class
Very Heavy

(b) Reclose intervals must be extended at temperatures below -35°C.

(c) De-rating required above 1,000m.

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References

Highlights of customer experiences

Learn more about some of our references worldwide.

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