ZC42A-2 megger Suitable for measuring high resistance and the experimental circuit, motor winding, cable or other electrical equipment installation, operation, maintenance and repair of electrical work and general insulation test. The instrument has two tranches of range, to facilitate the user to select. Model ZC42A-1 ZC42A-2 ZC42A-3 nominal voltage(V) 100/250 250/500 500/1000 Tolerance ±10 % measurement range 0~100 0~200 0~200 0~500 0~500 0~1000 Accuracy (class) 10 Overall dimensions/weight 265W * 125D * 165H / 3.5(MM /KG)