Flexible cable seals for gas insulated substations

As the sealing solution is quite demanding, Roxtec provided extra technical support to the staff of the installation company. Roxtec representatives held installation trainings and performed onsite control in order to make sure that everyone involved in the project was fully satisfied.

"Roxtec provided training and the cable entries were installed under the supervision and with the participation of Sergey Bril, head of the project department at Roxtec Russia. We are confident in the result," says Vanin Alexey, head of the project at contractor InjPromEnergo.

Flexible thinking

The floor opening had to have a removable transit. In case of emergency it must be possible to remove the sealing and disconnect the cable from the GIS. In fact, all seals and sleeves had to be flexible as the cable positions could not be fixed until after cable pulling and GIS connection.

Customized creation

The mineral wool with special fire stop paint that was used before was not strong, solid and gas-tight enough. And the removal of it added a risk of damage to cables and equipment. So Roxtec made special stainless steel plates in three parts to bolt onto the structure. Roxtec SLFO sleeves were then bolted to the plates, and finally the cables were sealed with Roxtec RS seals.

Cost-efficient solution

The sleeves were not positioned until the installation at site was finished, and the customized solution made it possible to further adjust their position afterwards. Roxtec solved all problems occurring with a safe solution that will not require any additional investments for the owner.

Why use Roxtec?

• Fire rated
• Gas-tight
• Removable seal
• Customized solution
• Service and support onsite