SEW 1120 ER

3 Wire ( Digital) Earth Resistance Testers FEATURES Ï Capable of measuring earth resistance and earth voltage. Ï 2mA measuring current permits the testing of earth resistance without tripping earth leakage current breakers in the circuit under test. Ï The leads are supplied as standard accessories for simplified two-wire measuring system. Ï 0© adjustment. Ï Battery operated. Ï Data hold function. Ï Low battery indication. Ï Calibration performed with supplied test leads. SPECIFICATIONS Measuring ranges Earth resistance 0-20© / 0-200© / 0-2000© Earth voltage 0-200 Vac( 40-500Hz) Accuracy Earth resistance ± ( 2% rdg+ 2dgt) or ± 0.1© , which is greater Earth voltage ± ( 1% rdg+ 2dgt) Earth resistance resolution 0-20© : 0.01© 0-200© : 0.1© 0-2000© : 1© Measuring system Earth Resistance by constant current inverter 820Hz approx. 2mA Display 3½ digit ( 2000 counts) 0© adjustment Ç Open circuit indication LED will be unlit Low battery indication “ “ symbol appears on the display Data hold indication “ “ symbol appears on the display Over range indication “ 1” ( MSD) Dimensions 175( L) × 85( W) × 75( D) mm Weight ( battery included) Approx. 600g Power source 1.5V ( AA) × 8 Safety standards IEC/ EN 61010-1 CAT III 200V IEC 61557-1 IEC 61557-5 EN 61326-1