... ,Resistance, Disconnector,Arrester Quality Wrranty IEEE32, IEC Resistive Load Neutral Grounding Resistance for Protecting Transformer Standards Carried-OutThe ... flowing standard:Dl/780-2001 distribution system neutal grounding resistor GB6450 dry-type power transformer Dl/T620-1997 ... gas, explosive gas,corrosive gas,and conductive dust.As resistor is heating element,when use it ,the temperature ...