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Key words :Surge Protective Device,SPD,Lightning Protection arrester,Surge Protector,Surge Arrester,Surge Suppressor,Lightning Surge Protector,Surge Protecton Device,Lightning Protection,Distribution Surge Protection,Lightning Arrester and so on Product introduce and application: DGM-type surge protector(hereinafter referred to as SPD)adapted to AC,mainly used for rated voltage not exceeding 1000V(RMS),200/380V,50/60Hz power supply system,not exceeding 1500V DC voltage of the circuit and equipment of the Surge Protection.SPD has a phase to phase(L-L),phase to ground(L-NE),phase to neutral(L-N),neutral to ground(N-PE) and combinations such as protected model. DGM-based high quality surge protector to use non-linear components and low residual voltage,small discharge current,modulus,and using safely and reliablely,designed and manufactured in accordance with the standards GB18802.1-2002/IEC61643.1,products have passed CE Certification and the national test Room:Beijing Lightning Experimental Device Type Detection Centers. TheDGM2-C20/4 exact technology parameter is as below: Type No. Rated Voltage(V) UnContinuous Voltage Uc(V )Standard Discharge Current In(KA)Max Discharge CurrentImax(KA)Protection Level(KA )Response Time(ns)DGM1(2)-C20220/380275/320385/42020401.8≤25 Technology SPD parameter(Note:According to user requirement ,can be customized Uc=140V,440V,550V,voltage range of range of the SPD): Type No. Rated Voltage(V) UnContinuous Voltage Uc(V )Standard Discharge Current In(KA)Max Discharge CurrentImax(KA)Protection Level(KA )Response Time(ns)DGM1(2)-D5220/380275/320385/4205101.2≤25DGM1(2)-D1010201.6DGM1(2)-C2020401.8DGM13-B303060.2.2DGM3(4)-B4010802.4DGM(4)-B60601002.8DGM-N-PE220/25540/6060/801.2≤100 Part of DC power surge protection technology parameters: Type No. DC power systemVoltage(V) UnContinuous Voltage Uc(V )Standard Discharge Current In(KA)Max Discharge CurrentImax(KA)Protection Level(KA )DGM-D5-Z/121216510120DGM-D5-Z/242432510150DGM-D5-Z/484862510250DGM-D5-Z/110110140510500DGM-D10-Z/1212161020150DGM-D10-Z/2424321020200DGM-D10-Z/4848621020300DGM-D10-Z/1101101401020600DGM-C20-Z/4848622040350DGM-C20-Z/1101101422040650