DER2571B INSULATION RESISTANCE TESTER

It can be used for measuring earth resistance of various of low resistance conductors and also be used for testing earth resistivity and testing earth voltage

Features

– 3 1/2 LCD digital display, big screen for easy reading
– Capability of preventing disturbance from earth voltage, promise normal test without open the circuit .
– If auxiliary earth resistance of potential terminal Rp and of current terminal Rc are as below value:
Rp=50kΩ
Rc=1kΩ (range 0.00~19.99Ω)
Rc=10kΩ (range 20.0~199.9Ω;200~1999Ω)
There is no influence on measuring.
– If earth return circuit is opened, OPEN CIRCUIT is given on LCD .
– Battery supply, low battery indication .