Surge Arrester
Surge protective devices (SPDs) protect electrical equipment and systems from damage caused by over voltages and establish equipotential bonding. This optimizes the availability of systems and devices and improves safety when dealing with electricity. Petunia SPDs consist of varistors and spark gaps that can be combined to protect electrical equipment against over voltages.
Types of PETUNIA SPDs
Petunia SPDs are provided in single pole, 2 poles for single phase systems, 3 poles for 3phase TNC systems and 4 poles for 3 phase TNS and TT systems.
Types of PETUNIA SPDs
Petunia SPDs are provided in single pole, 2 poles for single phase systems, 3 poles for 3phase TNC systems and 4 poles for 3 phase TNS and TT systems.
The different types of Petunia SPDs are presented in the following:
Single Pole SPDs
| Reference code | PS-1C1 | PS-1C2 | PS-1C3 |
| Number of Poles | 1 | 1 | 1 |
| SPD according to EN 61643-11 | Type 1 + 2 | Type 1 + 2 | Type 2 |
| Max. continuous operating voltage (a.c.) (UC) | 255 | 255 | 255 |
| Lightning impulse current (10/350 µs) [L-PE] (Iimp) | 25 KA | 12.5 KA | 7.5 KA |
| Nominal discharge current (8/20 µs) (In) | 60 | 40 | 20 |
| Voltage protection level (UP) | < 1.5 KV | < 1.5 KV | < 1.5 KV |
Two Poles SPDs
| Reference code | PS-2C1 | PS-2C2 | PS-2C3 |
| Number of Poles | 2 | 2 | 2 |
| SPD according to EN 61643-11 | Type 1 + 2 | Type 1 + 2 | Type 2 |
| Max. continuous operating voltage (a.c.) (UC) | 255 | 255 | 255 |
| Lightning impulse current (10/350 µs) [L,N-PE] (Itotal) | 50 KA | 25 KA | 15 KA |
| Lightning impulse current (10/350 µs) [L,N-PE] (Iimp) | 25 KA | 12.5 KA | 7.5 KA |
| Nominal discharge current (8/20 µs) (In) | 60 | 40 | 20 |