New Technology Neural Point Transformer Resistance Box

Standards Carried Out
DL/780-2001 Neutral Grounding Resistance in Power Distribution
GB6450 Dry-Type Power Transformer
DL/T620-1997 Overvoltage Protection and Insulation Co-ordination of AC Electrical Equipments
GB/T16927-1997 Experimental Technique of High Voltage
GB1208-1997 Current Transformer
GB4208-93 Shell Protection Grade (IP code)
IEEE32-1972 Standard Technique, Terms and Experiment of Neutral Grounding Device
GB311.1-1997 Insulation Co-ordination of Transmissional and Distributed Device of High Voltage.
DL/T593-1996 Common Specifications for Purchasing High Voltage Switch Equipment.
GB50150-1991 Electrical Equipment’s Hand-over and Test Standard of Electrical Device Installation Project.
Notice for purchase
1. system rated voltage
2.short-time withstand current;
3. normal resistance;
4. with current transformer or not; transformation