Высококачественные недорогие усовершенствованные устройства защиты от перенапряжений автоматический выключатель эффективная электрическая защита

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Product Description


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ModelMG-T1T2-DC/3PMG-T2-DC/2PMG-T2-DC/3P
Maximum continuous operating voltage [Uc]800VDC/1000VDC/1200VDC800VDC/1000VDC/1200VDC
Impulse current (10/350) [llmp]7kA 
Nominal discharge current (8/20) [In]20kA20kA
Maximum discharge current [Imax]50kA40kA
Voltage protection level [Up]4.2kA/4.5kA/5.0kA3.2kA/4.0kA/4.4kA
Continuous flow [lf]32A fuse will not be triggered at 2kArms 255V 
Response time [tA]≤100ns≤25ns
Maximum backup fuse (L)200A gL/gG125A gL/gG
Maximum spare fuse (L-L')125A gL/gG 
TOV voltage355V/5sec 
Operating temperature range (parallel circuit)-40℃...+80℃-40℃...+80℃
Operating temperature range (series circuit)-40℃...+60℃ 
Installation wire cross-sectional area35mm² solid/50mm² flexible1.5mm²~25mm²solid/35mm² flexible
Installation method35mm DIN rail 
Housing materialPurple(module)/light gray (base) thermoplastic,UL94-VO Purple(module)/light gray (base) thermoplastic,UL94-VO 
Specifications2 mods1 mod
Testing standardsIEC 61643-1;GB 18802.1;YD/T 1235.1IEC 61643-1;GB 18802.1;YD/T 1235.1
AuthenticationCE ROHS ISO9001 CQC TUVCE ROHS ISO9001 CQC TUV
Remote signaling installation connection typeSwitching contactSwitching contact
Exchange capacity250V/0.5A250V/0.5A
Exchange capacity250V/0.1A;125V/0.2A;75V/0.5A250V/0.1A;125V/0.2A;75V/0.5A
Cross section area of remote communication end wireMax.1.5mm² solid/flexinleMax.15mm² solid/flexinle
Packing1pc(s)2pc(s)1pc(s)
Weight288g206g283g




FAQ


 


1.How long does an SPD last?


 


How long a MOV-based SPD can last depends on the frequency and duration of the surge it experiences. Each time the MOV is switched on to divert the surge to the ground, its life decreases slightly. The larger the surge, the greater the degradation of MOV. A single hit at 20kA may reduce the MOV's lifetime to 15 hits at 0.2kA. So depending on the size and duration of the surge SPD encounters, it may last a day to suppress a large surge, or it may last for years to suppress a smaller surge.


 


2. How do surge protection devices work?


 


A surge protector or surge suppressor is an appliance or device designed to protect electrical equipment from voltage spikes. Surge protectors attempt to limit the voltage provided to electrical equipment by blocking or short-circuiting any unwanted voltage above the safety threshold.


 


3.What is distributed (cascaded) surge protection?


 


Distributed protection, cascading protection, or coordination is the process of coordinating protection between the main service entry and the internal branch switchboards of a large facility. Typically, surge guards (SPDS) with high surge handling capabilities are installed at the service inlet, while SPDS with lower surge ratings will be installed on branch panels or dedicated power supplies that power sensitive equipment. This approach can further include point-of-use SPDS along long lines that terminate in sensitive or critical equipment.


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