Surge Protective Devices
Limit surge energy to electrical equipment with surge protective devices.
SPD Class 1
OVR Type 1 and Type 1+2 are designed to discharge high current surges without any destruction to the installation. Type 1 and Type 1+2 SPDs are placed at the entrance point of the installation, in the main distribution board for a global protection of this installation.
- limp 25kA and 12.5kA
- 3 types of follow current (lf) 50, 15 and 7kA
- Spark gap and varistor technology
SPD Class 2
OVR Type 2 and Type 2+3 are designed to protect electric installations and sensitive equipment against indirect surges with ensuring a low protection level (Up). It is characterized by its capacity to safely discharge current with 8/20 µs wave form.
- Imax 20kA, 40kA and 80kA
- Up 1kV, 1.4kV and 1.5kV
- Uc (a.c/d.c) 75V, 150V, 275V, 350V, 440V, 600V and 760V
SPD Class 3
OVR Type 3 surge protective devices shall be installed as close as possible from the sensitive equipment to protect. Tested with a 1,2/50 – 8/20 current combination wave generator, they ensure a very low protection level voltage value.
- Imax 10kA
- Up 900V
- Uc 275V and 440V