Tridelta offers a wide portfolio of surge arresters for high voltage applications up to 800 kV:
All Tridelta designs feature an excellent sealing system that prevents the ingress of any moisture, ensuring decades of reliable and maintenance-free operation. The wide range of TRIDELTA arresters offers optimal surge protection for various requirements and applications such as:
In addition to the proven SB arresters with porcelain housing, Tridelta Meidensha offers three arrester designs with silicone housing. All three designs use high quality LSR silicone that is water repellent and UV/aging resistant for life and ensures excellent impurity behavior. They also have in common a significantly lower weight compared to porcelain arresters, which makes transport easier, minimizes the risk of damage during transport and installation, and allows various installation options such as use as a line arrester.
Cage Design SBKC
Tube Design SBKT SB
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When it comes to detail …
Cage Design
Tridelta offers arresters with silicone housing in the cage design of the SBKC series for applications up to 420 kV.
Fiberglass-reinforced epoxy resin rods are fixed in the terminals using a patented process and enclose the metal oxide varistors. This cage-like structure gives the active part high mechanical strength. Direct potting of the “cage” with LSR silicone prevents moisture penetration, thus ensuring high reliability. We use high quality LSR silicone that is water repellent and UV/aging resistant for life and ensures excellent impurity behavior.
Our SBKC arresters in cage design are suitable for increased mechanical requirements and offer an excellent price/performance ratio. They can be used in substations standing or hanging, as well as in overhead lines as line arresters. High processing quality on the latest machines and testing with state-of-the-art measuring technology guarantee a long service life.
| Product | SBKC Design 0 | SBKC Design I | SBKC Design II | |
|---|---|---|---|---|
| Highest System Voltage Um | kV | 170 | 420 | 800 |
| max. Rated Voltage Ur | kV | 144 | 360 | 612 |
| max. Nominal Discharge Current In (at 8/20 µs waveshape) | kA | 10 | 20 | 20 |
| max. Thermal Energy Absorption Capability kJ per kV of Ur | 4,5 | 9,2 | 13 | |
| max. Line Discharge Class | 2 | 4 | 5 | |
| Qrs (accord. IEC 60099-4 Edt. 3.0) | C | 1,2 | 2,8 | 4,0 |
| High Current Withstand Strength 4/10 µs | kA | 100 | 100 | 100 |
| max. Low Current Withstand Strength 2 ms | A | 500 | 1.500 | 2.000 |
| max. Short Circuit / Pressure Relief Capability | kA – 0,2s | 40 | 63 | 63 |
| Mechanical Strength: Specific short-term load SSL | Nm | 1.200 | 4.000 | 35.000 |
Tube Design
Our arresters with silicone housing in the tube design of the SBKT series are available for applications up to 800 kV.
Similar to porcelain arresters, they use a hollow insulator as a housing. The so-called composite insulator consists of a glass-fiber-reinforced plastic tube to which the silicone shields are applied by means of spraying technology. Composite insulators are characterized by very high mechanical strength.
For our SBKT arresters, we use high-quality LSR silicone that is water-repellent and UV/aging resistant for life and ensures excellent impurity behavior. An excellent sealing system prevents moisture penetration, ensuring a long service life.
Due to their very high mechanical strength, SBKT arresters from Tridelta are ideally suited for applications up to 550 kV networks as well as for highly earthquake-prone areas. Since 75% of the mechanical stability of the arrester is retained after an arrester failure, SBKT arresters can also be used for applications with a support function, in which the arrester simultaneously serves as a support in addition to its function as surge protection.
| Product | SBKT Design I | SBKT Design II | |
|---|---|---|---|
| Highest System Voltage Us | kV | 550 | 800 |
| max. Rated Voltage Ur | kV | 444 | 624 |
| max. Nominal Discharge Current In (at 8/20 µs waveshape) | kA | 20 | 20 |
| max. Thermal Energy Absorption Capability | kJ per kV of Ur | 10 | 18 |
| max. Line Discharge Class | 4 | 5 | |
| SM,SH | SM,SH | ||
| Qrs (accord. IEC 60099-4 Edt. 3.0) | 3,6 | 4,4 | |
| High Current Withstand Strength 4/10 µs | kA | 100 | 100 |
| max. Low Current Withstand Strength 2 ms | A | 1.700 | 2.600 |
| max. Short Circuit / Pressure Relief Capability | kA – 0,2s | 65 | 80 |
| Mechanical Strength: Specific short-term load SSL | Nm | 12.000 | 23.000 |
Porcelain
We have been manufacturing our proven SB series porcelain arresters since 1962.
Metal oxide varistors with high energy absorption capacity and an excellent sealing system ensure a long service life. Depending on the mechanical requirements, our arresters are available in three different designs:
| Product | SB Design 0 | SB Design I | SB Design II | |
|---|---|---|---|---|
| Highest System Voltage Um | kV | 420 | 550 | 800 |
| max. Rated Voltage Ur | kV | 396 | 468 | 612 |
| max. Nominal Discharge Current In (at 8/20 µs waveshape) | kA | 20 | 20 | 20 |
| max. Thermal Energy Absorption Capability kJ per kV of Ur | 13 | 13 | 13 | |
| max. Line Discharge Class | 5 | 5 | 5 | |
| Qrs (accord. IEC 60099-4 Edt. 3.0) | C | 3,6 | 3,6 | 4,0 |
| High Current Withstand Strength 4/10 µs | kA | 100 | 100 | 100 |
| max. Low Current Withstand Strength 2 ms | A | 2.000 | 2.000 | 2.000 |
| max. Short Circuit / Pressure Relief Capability | kA – 0,2s | 65 | 63 | 63 |
| Mechanical Strength: Specific short-term load SSL | Nm | 10.000 | 23.000 | 35.000 |
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