Metal Oxide Surge Arresters
SBKC Series in Cage Design for applications up to 420 kV
Tridelta offers arresters with silicone housing in Cage Design of the SBKC series for applications up to 420 kV.
Fibreglass Reinforced Plastic rods (FRP) are fixed in the arrester terminals by means of a TRIDELTA patented technique and form a kind of cage around the metal oxide varistor blocks which provides high mechanical stability to the arrester. The direct molding of the active part with LSR silicone prevents from any moisture ingress and ensures high reliability. Tridelta uses high-quality LSR silicone which keeps its hydrophobic and UV-resistant/non ageing properties over the complete service life and ensures excellent artificial pollution performance.
SBKC arresters in Cage Design are suitable for applications with advanced mechanical requirements and offer an outstanding price-performance ratio. It can be installed in substations in stationary or suspended installation and is best adapted for use as line arresters for the protection of transmission lines. High level and stable manufacturing quality on the newest machinery as well as testing with state-of-the-art test equipment assure a long service life.
Fibreglass Reinforced Plastic rods (FRP) are fixed in the arrester terminals by means of a TRIDELTA patented technique and form a kind of cage around the metal oxide varistor blocks which provides high mechanical stability to the arrester. The direct molding of the active part with LSR silicone prevents from any moisture ingress and ensures high reliability. Tridelta uses high-quality LSR silicone which keeps its hydrophobic and UV-resistant/non ageing properties over the complete service life and ensures excellent artificial pollution performance.
SBKC arresters in Cage Design are suitable for applications with advanced mechanical requirements and offer an outstanding price-performance ratio. It can be installed in substations in stationary or suspended installation and is best adapted for use as line arresters for the protection of transmission lines. High level and stable manufacturing quality on the newest machinery as well as testing with state-of-the-art test equipment assure a long service life.
Field of application
Protection of transformers, switch-gears and plants against atmospheric and switching overvoltages
Selection of metal oxide (Zn0) surge arresters
The selection of the rated and the continuous operating voltage of the arresters depends on the neutral point treatment of the network. Guidelines for selection: see VDE 0675- 5 and IEC 60099-5
Design
Type tested according to IEC 60099-4 active part reinforced with FRP rods; directly molded with silicon
Colour: Grey RAL 7040
Fittings: Al alloy
Connections: clamps, screws, nuts stainless steel
Optional accessories
Monitoring spark gap, surge counter, diagnostic appliance
| Product | SBKC size 0 | SBKC size II | |
|---|---|---|---|
| High System Voltage Us | kV | 170 | 420 * |
| Max. Rated Voltage Ur | kV | 144 | 360 * |
| max. Nominal Discharge Current ln (at 8/20μs waveshape) | kA | 10 | 10 |
| max. Thermal Energy Absorption Capability | kJ per kV of Ur | 4.5 | 9.2 |
| Max. Line Discharge Class | 2 | 4 | |
| Qrs (accor. IEC 60099-4 Edt. 3.0) | 1.2 | 2.8 | |
| High Current Withstand Strength 4/10 μs | kA | 100 | 100 |
| Max. Low Current Withstand Strength 2ms | A | 500 | 1500 |
| Max. Short Circuit / Pressure Relief Capability | kA – 0.2s | 40 | 63 |
| Mechanical Strength: Specific short-term load SSL | Nm | 1,200 | 4,000 |
*Higher rating for line arrester applications (TLA) available on request
Related Products
Metal Oxide Surge Arresters
SBKT Series in Tube Design for applications up to 800 kV
smartCOUNT
Surge Arrester Monitoring System
Metal Oxide Surge Arresters
SBK Series in Solid Core Design for applications up to 170 kV
Need Assistance?
Get in touch with
us!
Our dedicated sales engineers are here to help you with your inquiries about our products
and services.
