Works 1. Switching: The working principle is rendered when no transient overvoltage is high impedance, but once the transient response of lightning over-voltage, low impedance on the mutation, allowing the lightning current. When the device is used as such devices are: discharge gap, gas discharge tubes, thyristors and the like. 2. Limiting type: It works for when there is no transient overvoltage high obstruction, but with the increase of its resistance will continue to reduce the surge current and voltage, the current-voltage characteristics of a strong non-linearity. Devices used for such devices include: zinc oxide varistors, suppression diodes, avalanche diodes. 3. Shunt or choke shunt type: in parallel with the device to be protected against lightning pulse presents a low impedance, while the normal operating frequency appears as high impedance. Choke type: Device series are protected against lightning pulse presents a high impedance, and the normal operating frequency presents a low impedance. Devices used for such devices are: a choke coil, a high-pass filter, low-pass filter, 1/4-wavelength short circuit and so on. Use 1, the nominal voltage Un: rated voltage is consistent with lightning protection system surge protector in IT systems this parameter indicates the surge protection should be used to ensure [3] on the type, it marked AC or RMS to DC voltage. 2, rated voltage Uc: long can be applied to protect the designated end without causing the protector characteristic changes and activate the protection element of maximum voltage rms. 3, rated discharge current Isn: to protection 施加波 form of 8 / 20μs standard 10 times the impact of lightning, the maximum peak surge current protection are tolerated. Internal electrical system operating over voltage: internal electrical system voltage, usually indicates a communication surge protector with multiple higher than the operating voltage, which causes the switching operation and the grid system is grounded or short failure inductive and capacitive loads Instantaneous high voltage peaks generated, the danger of modern sophisticated electrical and electronic equipment is enormous. This is caused by over-voltage four reasons. The first three factors are thunder and lightning, the latter is the electrical system for internal reasons. Thunderstorm for: When Thundercloud release electricity, powerful lightning current cumulative injection from the object hit, punctal tens to hundreds of times the value of high-kA, where thermal effects can be achieved at the point of strike range of about 6000-10000 read high temperatures, and strong shock resistance around 5000-6000, strong currents and high temperatures and severe impact generated by direct lightning strikes, allowing the object hit the entire destruction, burning, melting, and the casualties and so on. 2, Charge surge protector lightning release, will be the power and data transmission over-voltage induced in the metal pipe. Cumulative time to have the building's lightning protection equipment discharge point along the top of the building will be connected to lightning, vent deflectors on the earth, and will form a powerful magnetic field can cause serious breakdown components and circuits board burned room surge protection, so that the whole system down, ranging from loss of data, electronic equipment subject to interference. People have a misunderstanding of damage. Home Surge Protector | Surge protectors Huludao | on people on China by Shenyang Electric Electric Limited. Shenyang Electric Co. on people (www.zsmsy.com) (www.smdqee.com) strong, credible, and other industries in other Shenyang, Liaoning province has accumulated a large number of loyal customers. The company better work attitude and constantly improve the innovative ideas will lead sink into the brilliant electric and you work for a better future!