SEW 1805ER 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

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