Surge Protection Concept
Surge
A transient wave of electrical current, voltage, or power pro-pagating along a line or a circuit and characterized by a rapid increase followed by a slower decrease. The causes include:directly lightning stroke, induced lightning (into the powersystem), start/stop of heavy duty equipment, short circuit,power switching (overvoltage or overcurrent produced byinstant low impedance when starting up/turning of f), and other surge sources such as: wrong wiring, power supply and equipment failure, and cable degradation. It mainly leads to acceleration of equipment aging, shorten of lifetime, equip ment damage; harm the production safety and stability; inter fere or damage the sensitive circuits and communication devices.
Surge Protection
Surge protection must start from potential risk evaluation and protected objective distinguish, utilizes the compre hensive/ systematical protection concept, of fers protection on not only power supply, but also data and all signal tran sitions, and this is the only ef fective way to protect the power system/data network/equipment/ electricalsystems. PTG takes it as its faith, prevent the harmful surge by its quality
products and ef fective solutions.
Surge Protective Device
SPD is mainly used to prevent the hazards caused by harm ful surge. Apart from lightning rods, grounding devices and other external protection solutions, SPD is required as internal protective device, since the external protection cannot defend induced surge, and or ground potential counterattack.Especially for the high value key IT/Power equipment in the building, SPD is necessary and critical, since their withstand ability is normally much lower than regular electrical equipment.
