Medium Voltage Outdoor Applications

Tridelta has a long tradition in the production of distribution arresters. Our first medium voltage arresters were produced in 1962.

The housing of these valve-type arresters was generally porcelain. Since 1996 our medium voltage arrester are made only using light and cost-effective silicone housing; they have passed the 5000h ageing test successfully.  

Different creepage distance variants and a wide range of connectors and accessories allow customized solutions – please contact us!

Our Products

Technical Data

Product   SBK class 1 SBK class 2
Highest System Voltage Us kV 72 72
max. Rated Voltage Ur kV 60 60
max. Nominal Discharge Current In (at 8/20 µs waveshape) kA 10 10
max. Thermal Energy Absorption Capability kJ per kV of Ur   4,5 4,5
max. Line Discharge Class   1 2
High Current Withstand Strength 4/10 µs kA 100 100
max. low Current Withstand Strength 2 ms A 500 500
max. Short Circuit / Pressure Relief Capability kA - 0,2s kA 20 20
Mechanical Strength: Specific short-term load SSL Nm 230 230