Fusesaver™

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

Introduction 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

Fuse Saving

Fusesaver™ is installed in series with a fuse to prevent fuse blowing due to transient faults reducing truck rolls and maintenance costs.

Reclosing

Replace fuses with Fusesaver™ to clear transient and permanent faults for improved network reliability.

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Sectionalizing

Fusesaver™ is installed downstream of a recloser to isolate permanently faulted line segments reducing number of affected customers.

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Switching

Fusesaver™ is temporarily mounted for network switching to isolate sections for repair reducing outage times and maintenance costs.

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Benefits

Increased network reliability

Fast and easy line installation

Improved operator safety

Future proof asset

Fast return on investment

Higher customer satisfaction

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.

The world’s fastest circuit breaker reduces fire start risks

On extreme risk bushfire days, the goal is to eliminate any possible danger caused by electric faults. Arc duration plays a significant role. Minimising the arc energy reduces the fire start risk. Traditional circuit breakers have clearing times around 50 ms, which is long enough to still leave a significant probability that an arc may cause fire ignition. When the clearing time is less than 20 ms, the probability of arcs igniting a fire approaches zero. Fusesaver™ is the only circuit breaker with an unsurpassed clearing time as low as 10 ms (half-cycle) providing maximum protection on high risk fire days.

Bushfire mitigation flyer

Customer Experience Powercor Australia

How Powercor Australia minimises bushfire risks

Powercor delivers electricity to nearly 780,000 homes and businesses in Victoria (Australia). The energy distributor is a located in one of the world’s most bushfire prone areas and manages approx. 90,000 km of distribution lines (87% overhead lines). Watch how Powercor deploys Fusesaver™ on SWER lines to mitigate bushfire risk.

Video Powercor

Features

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)

Technical Data

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 I_r	A	40	100	200
Rated short-circuit breaking current I_sc	kA	1.5	4	6.3
Rated short-circuit making current I_peak	kA	3.75	10.4	16.4
Rated short-time current I_k	kA	1.5	4	6.3
Rated short-time current duration t_k	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 U_p	kV	110	125
Rated power-frequency withstand voltage U_d (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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Catalogs

Brochures

Flyer

References

Learn more about some of our references worldwide.

UK Power Networks | UK

Fusesaver™ - Improving network reliability

Cost-efficient solution with minimum installation, operation and maintenance costs
Easy plug-and-play installation
Saving costs with maximum grid availability

Reference video

Powercor network in Victoria – Australia

Fusesaver™ - Mitigation of bushfire risk

Ultra-fast fault clearing greatly reduced the potential for fire ignition from the arc
Cost savings thanks to quicker installation time
Wireless connectivity for remote access and easy SCADA integration

Reference video

Customer reference webpage

UK Power Networks | UK

Portable Switch - Load and fault breaking

Portable soft ganged switch
Temporary isolation made easy
Simple, risk-free installation and independent operation

Reference video

Contact

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Want to learn more about Fusesaver™ and its capabilities? Please contact us.