Model :
ST-1520
Digital Earth Resistance Tester ST1520
For checking the insulation resistance between the grounding point and terminals, and between the terminals and the outer casing of emergency bells and automatic fire alarm equipment.
If you have any questions,
please feel free to contact us!
|
Measuring ranges |
Earth
resistance |
|
Accuracy |
Earth
resistance |
|
Earth resistance resolution |
0-20Ω :
0.01Ω |
|
Measuring system |
Earth Resistance by constant current inverter 820Hz approx. 2mA. |
|
Display |
3½ digit (2000 counts) |
|
Open circuit indication |
LED will be unlit |
|
Low battery indication |
"B" symbol appears on the display |
|
Data hold indication |
"DH" symbol appears on the display |
|
Over range indication |
"1"(MSD) |
|
Dimensions |
163(L) × 100(W) × 50(D)mm |
|
Weight (battery included) |
Approx. 480g |
|
Power source |
1.5V (AA) × 6 |
- Capable of measuring earth resistance and earth voltage.
- 2mA measuring current permits the testing of earth resistance without tripping earth leakage current breakers in the circuit under test.
- Auto power off function.
- The timer operates automatically for about three to five minutes when the "PUSH BUTTON SWITCH" and "TIMER ON BUTTON" are pressed together. This will keep test "ON" for the duration of the timer.
- Timer for test function (count 3-5 minutes).
- Battery operated.
- Data hold function.
- Small and light weight.
- Calibration performed with supplied test leads.