Portable electrical earth rod/Grounding rod,Earth rods set with wire and earth pin Suitable for making power failed equipments or temporary short-circuited lines grounded, preventing unexpected power to intrude in and do damage to personnel and equipments. Technical:Short circuiting rod&H.T Discharge Rod,portable earth rod set Type Suitable voltage(kV) Rated short-circuit current(kA/1S) Size of earth wire(mm2) Insulating length of rod(rope)(mm) JDB-1 0.5 4.2 16-25 ≥100 JDB-2 0.5-110 6.5-13 25-50 ≥300-1300 JDB-3 10-220 6.5-13 25-50 ≥700-2000 JDB-4 10-500 6.5-13 25-50 ≥900-3700 JDB-5 110-220 6.5-13 25-50 ≥1300-2100 JDB-6 110-500 6.5-13 25-50 ≥1300-3700 JDB-7 10-200 6.5-13 25-50 ≥700-1300 JDB-8 10-35 6.5-13 25-50 ≥300-2100 JDB-9 220-500 6.5-13 25-50 ≥700-900