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Surge protection device (SPD) for installation in a low-voltage distribution system. A surge protector, spike suppressor, surge suppressor, surge diverter, [1] surge protection device (SPD), transient voltage suppressor (TVS) or transient voltage surge suppressor (TVSS) is an appliance or device intended to protect electrical devices in alternating current (AC) circuits from voltage spikes ...
[2] [5] The "8/20 μs" generator is designed for surge arrester testing, and produces a high-current surge into a low-impedance load. [2] On the other hand, modern electronic devices can be high and low-impedance loads simultaneously due to non-linear devices, protection circuits, and arcing in a dielectric breakdown.
Plug assembly with surge protector circuitry. A typical surge protector power strip is built using MOVs. Low-cost versions may use only one varistor, from the hot (live, active) to the neutral conductor. A better protector contains at least three varistors; one across each of the three pairs of conductors.
A transient-voltage-suppression diode can respond to over-voltages faster than other common over-voltage protection components such as varistors or gas discharge tubes. The actual clamping occurs in roughly one picosecond , but in a practical circuit the inductance of the wires leading to the device imposes a higher limit.
IEC TR 62066 Surge overvoltages and surge protection in low-voltage a.c. power systems – General basic information IEC 62067 Power cables with extruded insulation and their accessories for rated voltages above 150 kV ( U m = 170 kV) up to 500 kV ( U m = 550 kV) – Test methods and requirements
Surge suppressors perform surge relief by acting as a pulsation dampener. Most suppressors have a metal tank with an internal elastic bladder in it. Within the tank they pressurize the top of the bladder with a compressed gas while the product comes in the bottom of the pressure vessel. The gas in the bladder is supplying the system with its ...