SIEMENS 3EK8 SILICONE RUBBER SURGE ARRESTERS-MEDIUM VOLTAGE SURGE ARRESTERS FOR DISTRIBUTION NETWORKS

Siemens 3EK8 silicone rubber surge arresters with wrap design effectively protect medium-voltage distribution networks from overvoltage.

3EK8 silicone surge arresters wrap design surge arresters are ideally suited to provide reliable protection for:

• Transformers
• Circuit breakers
• Medium-voltage switchgear
• Medium-voltage distribution networks

The silicone rubber housing is directly molded onto the metal oxide (MO) blocks. This creates a reliable seal that prevents moisture ingress and partial discharges.

In the extremely rare event of an overload, arcing cannot result in a buildup of critical internal pressure, since the MO resistors are not enclosed in a sealed rigid mechanical shell. The arc can escape directly through the fiberglass wrap and the soft silicone housing without damaging the mechanical structure. No internal parts are ejected in the process.

High-temperature vulcanized (HTV) silicone rubber is highly hydrophobic. This keeps any conductive moisture from forming on the surface, and dirt deposits are rendered harmless as a result of the hydrophobic transfer. Silicone is highly fire-retardant and self-extinguishing in the event of fire. These properties ensure the reliable, maintenance-free operation of 3EK8 surge arresters.

3EK8 surge arresters can be delivered with the same accessories like 3EK7 surge arresters.

Air-insulated Switchgear

• Most comprehensive portfolio for all high-voltage applications
• Lowest failure rates and reliable product life time of up to 50 years
• Proven Clean Air and vacuum interrupter technology
• Ratings up to 1,200 kV

Siemens Transmission Products – Leader in innovations with comprehensive, connective and sustainable portfolio

Transmission products play a vital role in the energy value chain. Siemens Transmission Products provides all key elements including power transformers and distribution transformers as well as gas-insulated and air-insulated switchgear and components. Products are offered individually, bundled or with related engineering upgrade to systems. Our products offer low life cycle costs with maximum availability, highest efficiency and short commissioning times.

We are driving technology innovations not only regarding the performance of transmission products but also in the area of sustainability and eco efficiency. By merging physics and data we enable new products and applications: Sensformer® and Sensgear®. With our global factory network and leading innovations we provide the highest level of quality and reliability to our customers: TSOs, DSOs, power producers, EPCs and industrial companies.