S&C's new TranShield Transformer Protector eliminates nuisance fuse operations at the grid's edge and drastically reduces unnecessary maintenance expenses. Industry data show that up to 70% of overhead distribution transformer fuse operations are classified as nuisance outages, where no other repair work is needed aside from fuse replacement. These instances are typically caused by a temporary fault. S&C's TranShield Transformer Protector tests whether faults are temporary and automatically restores power so utility crews do not need to roll a truck to do so.

"These nuisance outages often occur at the edge of the grid and in the hardest-to-reach places, where crews are driving long distances or climbing through customers' backyards. This can make a relatively straightforward fuse replacement take, on average, three times longer than necessary, causing the cost of these truck rolls to rise," says Mike Edmonds, S&C's Chief Commercial Officer. "The TranShield Transformer Protector helps utilities avoid these nuisance outages altogether, lowering their maintenance costs and freeing up crews to work on more proactive projects to greater enhancing a utility's lateral protection strategy."

With innovations like the new transformer protector, S&C is tackling reliability at the most problematic and uncharted areas of the grid-from the vulnerability of laterals to the protection challenges of hybrid circuits, combinations of both overhead and underground circuits. As a result, in 2018, S&C devices worked to save more than 2.7 billion customer outage minutes, saving utilities over $85 million in maintenance expenses.

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Source: S&C Electric