Fault detection and automatic fault isolation – effective limitation of power outages


Ensto’s intelligent network automation solution Auguste load break switch disconnector makes the electricity distribution grid more reliable and safer by significantly shortening the duration of power outages. The solution reduces the expense of maintaining overhead lines and the costs of breaks in transmission.

Uninterrupted power distribution is a key concern for every customer. In the event of damage to the supply network, a large part of the network may be hit by interruptions, and the source of the problem can take a long time to find. The main reasons for prolonged power cuts are trees that have fallen on power lines, storms, and snow loads on the lines. Shorter outages of a few seconds are usually due to thunderstorms or birds on the lines.

The solutions are ideally suited to the difficult environmental and weather conditions and are suitable for all types of medium-voltage overhead line networks.

Why choose network automation?


Ensto has many years of experience around the world in network automation products and solutions that reliably reduce the cost of disruption due to interruptions in supply, and improve the SAIDI and SAIFI indices. Network automation:

  • Shortens the duration of power cuts and reduces the impact area of breaks
  • Detects faults 
  • Automatically separates the affected part of power line, making it easier to locatet the fault
  • Reduces expenses
  • Reduces the cost of disruption due to interruptions in supply, and improves security of supply

Read more about the SAIDI and SAIFI indices 

Ensto Auguste Innovations


The devices in the Auguste range are overhead break disconnect switches designed to enable full-load disconnection up to 630 A of a medium voltage overhead electrical line up to 36 kV. Thanks to the modular design, the device is suitable for all network types, and in particular those requiring frequent switching in severe weather conditions. The device also has a built-in auxiliary transformer. They are extremely reliable, and offer very advanced safety features, enabling them to be used with complete peace of mind. 

Maintanance free solution

One of the most important features of the device is its closed structure, making it suitable for the tough weather conditions. The load break switch disconnector does not need to be serviced, and the batteries need not be replaced during its lifespan. Conventional remotely operated overhead line load break switch disconnectors need technical inspection at least once every two years, which often entails interruptions to electricity distribution and labour costs for equipment inspection and maintenance.

Auguste overhead line switch disconnector

Auguste switch disconnector with automatic fault isolation can replace conventional hand-held and remote switch disconnectors for overhead lines. The modular design allows the device to be customised to the requirements and intended uses of different networks. The load break switch disconnector is completely maintenance-free and filled with low-pressure SF6 gas, with a minimum life of 30 years without gas replenishment. The device also has a built-in auxiliary transformer.

  • The load break switch disconnector does not need to be serviced, and the batteries need not be replaced during its lifespan.
  • Conventional remotely operated overhead line load break switch disconnectors need technical inspection at least once every two years, which often entails interruptions to electricity distribution and labour costs for equipment inspection and maintenance.


Check our Auguste load break switch disconnectors

We believe in customer-oriented service

We at Ensto believe that seamless cooperation benefits everyone. We provide solutions that help electricity supply companies make cost-effective and long-term investments, meeting both statutory and consumer requirements. In customised projects in particular it is important to know the operating environment of our customers and their operating methods.

The network automation solutions we provide are always gone through in close cooperation with the customer. Our highly skilled salespeople are on hand every step of the process, including in the installation and commissioning phases. Our technical support and expertise are always available to our customers.


Contact our sales team

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