• Dust and drip proof.(designed to IEC 60529 IP54) • In addition to the facility for precision measurement, test leads for simplified two wire easuring system also supplied as standard accessories.(unit can be hung from the neck for simplified measurement) • Designed to meet IEC 61010-1 safety standard.• Capable of measuring earth voltage.• Automatic warning when resistance of auxiliary earth spikes is in excess of tolerance.• Small and lightweight. Shock resistant new case material.• 2mA measuring current permits earth resistance tests without tripping earth leakage current breakers in the circuit under test. Measurement ranges Earth Resistance: 0 - 20Ω/0 - 200Ω/0 - 2000ΩEarth Voltage [50,60Hz]: 0 - 200V ACAccuracy Earth Resistance: ±2%rdg±0.1Ω (20Ωrange)±2%rdg±3dgt (200Ω/2000Ωrange)Earth Voltage: ±1%rdg±4dgtOverload protection Earth Resistance: 280V AC for 10 secondsacross 2 of the 3 terminalsEarth Voltage: 300V AC for 1 minuteApplicable standards IEC 60529 IP54Safety Standard IEC 61010-1 CAT III 300V Pollution Degree 2, IEC 61557Power source R6 (AA) (1.5V) × 6Dimensions 105(L) × 158(W) × 70(D)mmWeight 550g approx.Included Accessories 7095A (Earth resistance test leads) × 1set(red-20m, yellow-10m, green-5m)8032 (Auxiliary earth spikes) × 1set7127A (Simplified measurement probe) × 1setR6 (AA) × 69121 (Shoulder strap)Instruction ManualCarrying case : 9084(Carrying case[Soft]:4105A only) : 9165(Carrying case[Hard]:4105A-H only)อ่านเพิ่มเติม