SEW 1805 ER Analog Earth Tester

High quality Tau Band movement. Capable of measuring earth voltage ( Vac) . 2mA measuring current permits earth resistance tests with tripping earth leakage current breakers in the circuit under test. Test leads are supplied as standard accessories for simplified two-wire measuring system. Battery operated. Battery life indication EN/ IEC 61010-1 CAT III 150V. Calibration performed with supplied test leads. WHY " GROUNDING TEST" IS NECESSARY ? " Grounding" has a few different purposes, such as for safety and for the stability of the electrical circuits. Listed below is more info about it. 1. Power system to the ground: As shown in figure, the purpose is preventing the secondary side from the damage of the primary side. It' s necessary for user' s safety. 2. Equipment to the ground: Connect equipments or shells to the ground. The purpose is protecting the user from the leakage of the equipments. 3. Electrical signal to the ground: Set up a " Zero volt" reference point or a loop path for all different signals. The purpose is for correct action or measuring. 4. Grounding for shielding: Top prevent static electricity. To prevent noise, electromagnetic interference ( put shielding) . Shielding room, cable and communication wires to the ground, equipment' s guard terminals to the ground, power transformers and filters to the ground. SPECIFICATIONS: Measuring Ranges Earth Resistance : 0-10 Ohm/ 0-100 Ohm/ 0-1000 Ohm Earth Voltage : 0-30V AC ( 40-500Hz) Accuracy Earth Resistance : + / - 3% of full scale Earth Voltage : + / - 2.5% of full scale Measuring System Earth resistance by constant current inverter ( Square Signal) 820 Hz approx. 2mA Open Circuit Indication LEDunit Power Source 1.5 V ( AA) x 8 Dimensions 170( L) x 165( W) x 92( D) mm Weight Approx. 1000g ( battery included) Accessories Test leads ( AL-36 : red-15m, yellow-10m, green-5m) Auxiliary earth spikes Simplified measurement probe Heavy-duty case Shoulder belt Instruction manual batteries = = = = = = = = = = = = = = = = = Untuk Informasi dan Pemesanan Hubungi: DARMATEK Contact Person : Subarkah Telp/ Fax : 021-71031268/ 021-78890541 HP : 081283804273/ 085774067221 Email : subarkah18@ yahoo.co.id Gmail : darmatek1@ gmail.com Y M : cs_ darmatek Pin BB : 7512CBB7 Web : www.darmatek.com