Transient overvoltages are caused very high increase of voltage caused electrical discharges (lightning) or switching manoeuvres.
1. Protection for Power Supply Line
a. ATSHOCK SERIES
Type 1 protection.
Highest protection for power supply lines at the point of entrance of the building.
Protection against direct lightning discharges. Able to withstand a 50kA, 10/350prs impulse current wave.
b. ATSHIELD SERIES
Type 1+2 protection.
Protectors combining the best properties of the existing surge protection technologies: varistor low residual voltage (1500V) together with the spark gap capacity of absorbing the lightning current (30 KA, 10/350urs wave).
c. ATSUB SERIES
Type 2 or 3 protection.
Withstand tens of kiloamperes, reducing the overvoltages to a non-harming level for the equipment.
d. ATCOVER SERIES
Type 1+2+3 protection.
Quick, robust and efficient protection for all phases both in common and differential mode, leaving a low residual voltage (900V).
e. ATVOLT SERIES
Type 3 protection.
Protection of direct current supply Iines with a low residual voltage.
2. Protection of Data and Communication Line
a. ATLINE SERIES
Data lines protection with a wide rangeof working voltages (from 5 to 110V).
Coaxial cable protection for TV CCTV and high frequency signals.
Protection of computer lines with RJ45 connector (switches, hubs).
Protection for ADSL, ISDL and analogical telephone lines.
Permanent overvoltages are those having a relatively long duration (several seconds). The usual causes of these overvoltages are a defective connection of the neutral I or power consumption drops.
According to En 50550
Complete kit which includes single-phase/three-phase protector combined against permanent and transient overvolttages, shunt release and main circuit breaker.